Obligation Boardwalk Transmission LP 5.95% ( US096630AE83 ) en USD

Boardwalk Transmission LP

100.28 % ▲

Etats-unis

US096630AE83 ( en USD )

5.95% par an ( paiement semestriel )

31/05/2026

Prospectus brochure de l'obligation Boardwalk Pipelines LP US096630AE83 en USD 5.95%, échéance 31/05/2026

2 000 USD

550 000 000 USD

096630AE8

BBB- ( Qualité moyenne inférieure )

Baa2 ( Qualité moyenne inférieure )

01/12/2025 ( Dans 27 jours )

Boardwalk Pipelines LP est une société américaine de pipelines énergétiques qui transporte du gaz naturel et des liquides de gaz naturel, principalement dans le sud des États-Unis.

L'Obligation émise par Boardwalk Transmission LP ( Etats-unis ) , en USD, avec le code ISIN US096630AE83, paye un coupon de 5.95% par an.
Le paiement des coupons est semestriel et la maturité de l'Obligation est le 31/05/2026

L'Obligation émise par Boardwalk Transmission LP ( Etats-unis ) , en USD, avec le code ISIN US096630AE83, a été notée Baa2 ( Qualité moyenne inférieure ) par l'agence de notation Moody's.

L'Obligation émise par Boardwalk Transmission LP ( Etats-unis ) , en USD, avec le code ISIN US096630AE83, a été notée BBB- ( Qualité moyenne inférieure ) par l'agence de notation Standard & Poor's ( S&P ).

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Table of Contents
Filed Pursuant to Rule 424(b)(2)
Registration No. 333-208627
333-208627-01

Proposed Maximum
Title of Each Class of
Aggregate Offering
Amount of
Securities To Be Registered

Price
Registration Fee(1)
Debt Securities

$550,000,000

$55,385

(1)
The filing fee, calculated in accordance with Rule 457(r), has been transmitted to the SEC in connection with the securities offered from
Registration Statement File No. 333-208627 by means of this prospectus supplement.
Table of Contents
PROSPECTUS SUPPLEMENT
(To Prospectus Dated December 18, 2015)
$550,000,000

Boardwalk Pipelines, LP
5.95% Senior Notes due 2026
Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP

This is an offering by Boardwalk Pipelines, LP of $550,000,000 of 5.95% senior notes due 2026. Interest on the notes is payable on June 1 and December 1 of each
year, beginning December 1, 2016. Interest on the notes will accrue from May 16, 2016. The notes will mature on June 1, 2026.
The notes will be redeemable, in whole or in part, at our option at any time, at a redemption price equal to the greater of 100% of the principal amount of the notes
to be redeemed or the "make-whole" redemption price, plus accrued and unpaid interest, if any, to the date of redemption.
The notes will be our senior unsecured obligations and will rank equally with all of our existing and future senior unsecured indebtedness. The notes will be fully and
unconditionally guaranteed by our parent, Boardwalk Pipeline Partners, LP. The guarantee will rank equally with all of the existing and future senior unsecured
indebtedness of the guarantor. The notes and the guarantee will be effectively subordinated to all of our subsidiaries' existing and future indebtedness and to all of our and
the guarantor's future secured indebtedness to the extent of the value of the assets securing such indebtedness.

Investing in the notes involves risk. Please read "Risk Factors" beginning on page S-6 of this prospectus supplement and on page 3 of
the accompanying base prospectus as well as the risk factors discussed in Boardwalk Pipeline Partners, LP's Annual Report on Form 10-
K for the year ended December 31, 2015 and Quarterly Report on Form 10-Q for the quarter ended March 31, 2016.

Public Offering
Underwriting
Proceeds to us

Price (1)

Discount

(before expenses) (1)
Per Note

98.860%

0.650%

98.210%
Total

$543,730,000
$ 3,575,000
$
540,155,000

(1) Plus accrued interest from May 16, 2016 if settlement occurs after that date.
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities
or determined if this prospectus supplement and the accompanying base prospectus are truthful or complete. Any representation to the
contrary is a criminal offense.
The notes will not be listed on any securities exchange or quoted on any automated quotation system. Currently, there is no public market for the notes.
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It is expected that delivery of the notes will be made to investors in registered book entry form only through the facilities of The Depository Trust Company and its
participants, including Euroclear and Clearstream, on or about May 16, 2016.

Joint Book-Running Managers

Barclays

Deutsche Bank Securities

J.P. Morgan

Citigroup
MUFG
Mizuho Securities
RBC Capital Markets
Wells Fargo Securities
Co-Managers

BofA Merrill Lynch

Regions Securities LLC

Santander

US Bancorp

BB&T Capital Markets

Goldman, Sachs & Co.

Morgan Stanley
May 11, 2016
Table of Contents
TABLE OF CONTENTS
Prospectus Supplement

Page
SUMMARY
S-1
RATIO OF EARNINGS TO FIXED CHARGES
S-5
RISK FACTORS
S-6
USE OF PROCEEDS
S-9
CAPITALIZATION
S-10
DESCRIPTION OF THE NOTES
S-11
CERTAIN U.S. FEDERAL INCOME TAX CONSIDERATIONS
S-25
UNDERWRITING
S-30
LEGAL MATTERS
S-33
EXPERTS
S-33
WHERE YOU CAN FIND MORE INFORMATION
S-33
FORWARD-LOOKING STATEMENTS AND ASSOCIATED RISKS
S-35
Base Prospectus

Page
ABOUT THIS PROSPECTUS

1
ABOUT BOARDWALK PIPELINE PARTNERS, LP

1
ABOUT BOARDWALK PIPELINES, LP

1
WHERE YOU CAN FIND MORE INFORMATION

1
INFORMATION WE INCORPORATE BY REFERENCE

2
RISK FACTORS

3
FORWARD-LOOKING STATEMENTS AND ASSOCIATED RISKS

4
RATIO OF EARNINGS TO FIXED CHARGES

6
USE OF PROCEEDS

7
DESCRIPTION OF THE COMMON UNITS

8
HOW WE MAKE CASH DISTRIBUTIONS

11
CONFLICTS OF INTEREST AND FIDUCIARY DUTIES

19
THE PARTNERSHIP AGREEMENT

26
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DESCRIPTION OF DEBT SECURITIES

38
MATERIAL U.S. FEDERAL INCOME TAX CONSEQUENCES

49
SELLING UNITHOLDERS

62
PLAN OF DISTRIBUTION

63
LEGAL MATTERS

65
EXPERTS

65
This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of this offering and also adds to
and updates information contained in the accompanying base prospectus and the documents incorporated by reference into this prospectus
supplement and the accompanying base prospectus. The second part is the accompanying base prospectus, which gives more general information
about securities we may offer from time to time, some of which may not apply to this offering. Generally, when we refer to the "prospectus," we
are referring to both parts combined. If information in this prospectus supplement differs or varies from the information in the accompanying base
prospectus, you should rely on the information in this prospectus supplement.

S-i
Table of Contents
This prospectus contains forward-looking statements that are subject to a number of risks and uncertainties, many of which are beyond our
control. See "Risk Factors" and "Forward-Looking Statements and Associated Risks" in this prospectus supplement and the accompanying base
prospectus.
You should rely only on the information contained in or incorporated by reference in this prospectus supplement and the accompanying base
prospectus. Neither we nor the underwriters have authorized anyone to provide you with additional or different information. We and the
underwriters are not making an offer of the notes in any state or jurisdiction where the offer is not permitted. You should not assume that the
information contained in this prospectus supplement or the accompanying base prospectus or the information that is incorporated by reference
herein is accurate as of any date other than its respective date. Our business, financial condition, results of operation and cash flow may have
changed since such dates. If any statement in one of these documents is inconsistent with a statement in another document having a later date--for
example, a document incorporated by reference in this prospectus supplement or the accompanying base prospectus--the statement in the
document having the later date modifies or supersedes the earlier statement.

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Table of Contents
SUMMARY
This summary highlights information contained elsewhere in this prospectus supplement and the accompanying base prospectus. It does
not contain all of the information you should consider before making an investment decision. You should read the entire prospectus
supplement, the accompanying base prospectus, the documents incorporated by reference and the other documents to which we refer for a
more complete understanding of this offering. Please read "Risk Factors" beginning on page S-6 of this prospectus supplement and page 3 of
the accompanying base prospectus as well as the risk factors discussed in Boardwalk Pipeline Partners, LP's Annual Report on Form 10-K
for the year ended December 31, 2015 and Quarterly Report on Form 10-Q for the quarter ended March 31, 2016 for more information about
important factors that you should consider before buying notes in this offering.
References in this prospectus supplement to "Boardwalk Pipelines," "we," "our," "us" or similar terms, when used in the present tense
or for historical periods, refer to Boardwalk Pipelines, LP together, unless the context otherwise requires, with our operating subsidiaries.
References in this prospectus to our "general partner" refer to Boardwalk Operating GP, LLC. References in this prospectus to the "master
partnership," "our parent," "the guarantor" or "Boardwalk Pipeline Partners" refer to Boardwalk Pipeline Partners, LP. References to
"Loews" refer to Loews Corporation, the ultimate parent company of the master partnership's general partner. We are the wholly owned
subsidiary of the master partnership and the master partnership has no operations other than through us.
Boardwalk Pipelines, LP
We are a wholly owned subsidiary of Boardwalk Pipeline Partners, LP. Our business is conducted by our wholly owned subsidiaries,
Gulf Crossing Pipeline Company LLC (Gulf Crossing), Gulf South Pipeline Company, LP (Gulf South), Texas Gas Transmission, LLC
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(Texas Gas), Boardwalk Field Services, LLC (Field Services), Boardwalk Louisiana Midstream, LLC (Louisiana Midstream) and Boardwalk
Petrochemical Pipeline, LLC (Boardwalk Petrochemical) (together, the operating subsidiaries) and consists of integrated natural gas, and
natural gas liquids and other hydrocarbons (together, NGLs), pipeline and storage systems and natural gas gathering and processing.
Boardwalk Pipelines Holding Corp. (BPHC), a wholly owned subsidiary of Loews Corporation (Loews), owns 125.6 million of the master
partnership's common units. Boardwalk GP, LP (Boardwalk GP), an indirect wholly owned subsidiary of BPHC, holds the 2% general partner
interest and all of the incentive distribution rights (IDRs) in the master partnership.
Our Business
Through our operating subsidiaries we own and operate natural gas and NGLs pipelines, including integrated storage facilities. Our
natural gas pipeline systems originate in the Gulf Coast region, Oklahoma and Arkansas, and extend northeasterly to the Midwestern states of
Tennessee, Kentucky, Illinois, Indiana and Ohio. Our pipeline systems contain approximately 14,090 miles of interconnected natural gas
pipelines, directly serving customers in thirteen states and indirectly serving customers throughout the northeastern and southeastern U.S.
through numerous interconnections with unaffiliated pipelines. We also own and operate more than 435 miles of NGLs pipelines serving
customers in Texas and Louisiana. In 2015, our pipeline systems transported approximately 2.4 trillion cubic feet (Tcf) of natural gas and
approximately 46.6 million barrels (MMBbls) of NGLs. Average daily throughput on our natural gas pipeline systems during 2015 was
approximately 6.7 billion cubic feet (Bcf). Our natural gas storage facilities are comprised of fourteen underground storage fields located in
four states with aggregate working gas capacity of approximately 205.0 Bcf and our NGLs storage facilities located in Louisiana consist of
nine salt-dome caverns with an aggregate storage capacity of 24.0 MMBbls. We also own three salt-dome caverns and a brine pond for use in
providing brine supply services and to support NGLs storage operations.

S-1
Table of Contents
Our transportation services consist of firm natural gas transportation, whereby the customer pays a capacity reservation charge to reserve
pipeline capacity at receipt and delivery points along our pipeline systems, plus a commodity and fuel charge on the volume of natural gas
actually transported, and interruptible natural gas transportation, whereby the customer pays to transport gas only when capacity is available
and used. We offer firm natural gas storage services in which the customer reserves and pays for a specific amount of storage capacity,
including injection and withdrawal rights, and interruptible storage and parking and lending (PAL) services where the customer receives and
pays for capacity only when it is available and used. We also transport and store NGLs and gather and process natural gas. Contracts for most
of our services related to NGLs, gathering and processing are generally fee-based or based on minimum volume requirements, while others are
dependent on actual volumes transported or stored. Our NGLs storage rates are market-based and contracts are typically fixed-price
arrangements with escalation clauses. We are not in the business of buying and selling natural gas and NGLs other than for system
management purposes, but changes in the level of natural gas and NGLs prices may impact the volumes of gas transported and stored on our
pipeline systems. Due to the capital-intensive nature of our business, our operating costs and expenses typically do not vary significantly based
upon the amount of products transported, with the exception of fuel consumed at our compressor stations.
Executive Offices, Ownership and Structure
We are a wholly owned subsidiary of the master partnership. We conduct the master partnership's operations and own its operating
subsidiaries. Our general partner is managed by the master partnership as its sole member. In turn, the master partnership is managed by its
general partner, Boardwalk GP. As a limited partnership, Boardwalk GP does not have a board of directors and is managed by its general
partner, Boardwalk GP, LLC, a Delaware limited liability company (or BGL). BGL has a board of directors that oversees the master
partnership's management, operations and activities. Loews indirectly owns 100% of the equity interests in BGL and Boardwalk GP. For
information about the executive officers and directors of BGL, please read the information described under "Where You Can Find More
Information." The master partnership's principal executive offices are located at 9 Greenway Plaza, Suite 2800, Houston, Texas 77046, and its
telephone number is (866) 913-2122.
The Offering

Issuer
Boardwalk Pipelines, LP

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Guarantor
Boardwalk Pipeline Partners, LP

Notes Offered
$550,000,000 aggregate principal amount of 5.95% senior notes due 2026, or the notes.

Maturity Date
The notes will mature on June 1, 2026.

Interest
The notes will bear interest at the rate of 5.95% per year. Interest on the notes will be
payable in arrears on June 1 and December 1 of each year they are outstanding,
beginning on December 1, 2016. Interest on the notes will accrue from May 16, 2016.

Optional Redemption
The notes will be redeemable, in whole or in part, at our option at any time prior to
March 1, 2026 at a redemption price equal to the greater of 100% of the principal
amount of the notes to be redeemed or the "make whole" redemption price, plus accrued
and unpaid interest, if

S-2
Table of Contents
any, to the date of redemption. The notes will be redeemable in whole or in part, at our
option, at any time and from time to time on or after March 1, 2026 at a redemption

price equal to 100% of the principal amount of the notes to be redeemed, plus accrued
and unpaid interest, if any, to the redemption date. See "Description of the Notes--
Optional Redemption."

Ranking
The notes will be:

· our, but not our subsidiaries', senior unsecured obligations;

· effectively subordinated in right of payment to all of our future secured debt to the

extent of the value of the assets securing such indebtedness;

· effectively subordinated in right of payment to all existing and future debt and other
liabilities, including trade payables, of us and our subsidiaries, and including (i)
$440.0 million aggregate principal amount of 4.50% notes due 2021 and $100.0

million aggregate principal amount of 7.25% debentures due 2027 of Texas Gas, (ii)
$275.0 million aggregate principal amount of 6.30% notes due 2017 and $300.0
million aggregate principal amount of 4.00% notes due 2022 of Gulf South and (iii)
our subsidiaries' borrowings under our revolving credit facility;

· equal in right of payment to all of our, but not our subsidiaries', existing and future
senior unsecured debt, including (i) $250.0 million aggregate principal amount of our
5.875% notes due 2016, $300.0 million aggregate principal amount of our 5.50%
notes due 2017, $185.0 million aggregate principal amount of our 5.20% notes due

2018, $350.0 million aggregate principal amount of our 5.75% notes due 2019,
$300.0 million aggregate principal amount of our 3.375% notes due 2023 and $600.0
million aggregate principal amount of our 4.95% notes due 2024, (ii) borrowings by
us under our revolving credit facility and (iii) any future borrowings under our $300.0
million Subordinated Loan Agreement with BPHC; and

· senior in right of payment to any of our, but not our subsidiaries', existing and future

indebtedness that is made expressly subordinated to the notes.

The indenture governing the notes will permit us to incur additional debt, all of which

may be senior debt and, subject to specified limitations, secured.
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Guarantee
The notes will be fully and unconditionally guaranteed by the master partnership on a
senior unsecured basis. The master partnership's guarantee of the notes will rank equally
with all its existing and future senior unsecured debt, including its guarantee of
indebtedness under our revolving credit facility. The guarantee will be effectively
subordinated in right of payment to all of the master partnership's future secured debt to
the extent of the value of the assets securing such debt.

S-3
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Use of Proceeds
We intend to use the net proceeds of approximately $539.2 million from this offering
(after deducting the underwriting discount and estimated offering expenses) for general
partnership purposes, which may include, among other things, growth capital
expenditures, repayment of future maturities of long-term debt and additions to working
capital. Pending such use, we intend to temporarily use the proceeds to reduce
borrowings under our revolving credit facility. Please read "Use of Proceeds" in this
prospectus supplement.
Affiliates of certain of the underwriters are lenders under our revolving credit facility

and will receive their respective share of any repayment of amounts outstanding under
the facility with the proceeds of this offering.

Risk Factors
You should carefully consider the information set forth in the section entitled "Risk
Factors" and the other information included or incorporated by reference in this
prospectus in deciding whether to invest in the notes.

Further Issues
We may from time to time, without notice to or the consent of the holders of the notes,
create and issue additional debt securities under the indenture governing the notes
having the same terms as, and ranking equally with, the notes in all respects (except for
the public offering price, issue date and the payment of interest accruing prior to the date
such additional notes are initially issued under the indenture).

Trustee, Registrar and Paying Agent
The Bank of New York Mellon Trust Company, N.A.

Covenants of the Indenture
We will issue the notes under an indenture which will, among other things, restrict our
ability to create liens, enter into sale and leaseback transactions, enter into mergers or
sell all or substantially all of our assets. See "Description of the Notes--Certain
Covenants" and "--Merger, Amalgamation, Consolidation and Sale of Assets."

Governing Law
State of New York.

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RATIO OF EARNINGS TO FIXED CHARGES
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The following table sets forth our ratio of consolidated earnings to fixed charges for the periods presented:

Boardwalk Pipeline Partners, LP

Three Months

Year Ended December 31

Ended March 31,

2016

2015
2014
2013
2012
2011
Ratio of earnings to fixed charges

3.23x 2.20x 2.34x 2.43x 2.71x 2.22x
For purposes of calculating the ratio of consolidated earnings to fixed charges:

· "earnings" is the aggregate of the following items: pre-tax income or loss from continuing operations before adjustment for income

or loss from equity investees; plus fixed charges; plus amortization of capitalized interest; less capitalized interest and
noncontrolling interests in pre-tax income of subsidiaries that have not incurred fixed charges; and

· "fixed charges" means the sum of the following: interest expensed and capitalized; amortized premiums, discounts and capitalized

expenses related to indebtedness; and an estimate of the interest within rental expense. Fixed charges are not reduced by any
allowance for funds used during construction.

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RISK FACTORS
An investment in the notes involves risks. You should carefully consider all of the information contained in or incorporated by reference into
this prospectus, including the risk factors relating to our business described under the caption "Risk Factors" beginning on page 3 of the
accompanying base prospectus and the risk factors described in the master partnership's Annual Report on Form 10-K for the year ended
December 31, 2015 and the master partnership's Quarterly Report on Form 10-Q for the quarter ended March 31, 2016, before investing in the
notes. Our business, financial condition, results of operations or cash flows could be materially adversely affected by any of these risks.
Risks Relating to the Notes
We may not be able to generate sufficient cash flow to meet our debt service obligations.
Our ability to make payments on and to refinance our indebtedness, including the notes, and to fund capital expenditures will depend on our
ability to generate cash in the future. This, to a certain extent, is subject to general economic, financial, competitive, legislative, regulatory and
other factors that are beyond our control.
We cannot assure you that we will generate sufficient cash flow from operations or that future borrowings will be available to us under our
revolving credit facility in an amount sufficient to fund our liquidity needs. We may need to refinance all or a portion of our indebtedness,
including the notes, on or before maturity. We cannot assure you that we will be able to refinance any of our indebtedness, including our revolving
credit facility and the notes, on commercially reasonable terms or at all.
Our substantial indebtedness and other financial obligations could impair our financial condition and our ability to fulfill our debt obligations.
We have substantial indebtedness and other financial obligations. As of May 10, 2016, as adjusted to give effect to this offering, we had:

· total indebtedness of approximately $3.6 billion; and

· $1,500.0 million of undrawn but available credit under our revolving credit facility and $300.0 million available under our subordinated

loan.
We will be permitted, under our revolving credit facility, the indenture governing the notes and the indentures governing our existing notes,
to incur additional debt, subject to certain limitations under our revolving credit facility and, in the case of secured debt, under the indenture
governing the notes. If we incur additional debt following this offering, our increased leverage could, for example:

· make it more difficult for us to satisfy our obligations under the notes or other indebtedness and, if we fail to comply with the

requirements of the other indebtedness, could result in an event of default on the notes or such other indebtedness;

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· require us to dedicate a substantial portion of our cash flow from operations to required payments on indebtedness, thereby reducing the

availability of cash flow for working capital, capital expenditures and other general business activities;

· limit our ability to obtain additional financing in the future for working capital, acquisitions, capital expenditures and other general

business activities;

· limit our flexibility in planning for, or reacting to, changes in our business and the industry in which we operate;

· detract from our ability to successfully withstand a downturn in our business or the economy generally; and

· place us at a competitive disadvantage relative to less leveraged competitors.

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Table of Contents
If we are unable to meet our debt service obligations and other financial obligations, we could be forced to restructure or refinance our
indebtedness and other financial obligations, seek additional equity capital or sell our assets. We may be unable to obtain such financing or capital
or sell our assets on satisfactory terms, if at all.
In the event of our bankruptcy or liquidation, holders of the notes will be paid from any assets remaining after payments to any holders of our
secured debt and the debt of our subsidiaries.
The notes will be our and the guarantor's general unsecured senior obligations, and effectively subordinated to any secured debt that we may
incur in the future to the extent of the value of the assets securing that debt and to any indebtedness of our subsidiaries. Our subsidiaries have a
substantial amount of indebtedness, including, as of May 10, 2016, (i) an aggregate of approximately $1.1 billion in senior notes issued by Texas
Gas or Gulf South and (ii) $370.0 million of outstanding borrowings under our $1.5 billion revolving credit facility. Our subsidiaries may incur
additional indebtedness in the future. Our right to receive any assets of our subsidiaries, as an equity holder of such subsidiaries, and the
consequent right of the holders of the notes to participate in those assets, will be structurally subordinated to the claims of the applicable
subsidiaries' creditors. If we are declared bankrupt or insolvent, or are liquidated, the holders of our secured debt and any debt of our subsidiaries
will be entitled to be paid in full from our assets before any payment may be made with respect to the notes. If any of the foregoing events occur,
we cannot assure you that we will have sufficient assets to pay amounts due on any secured debt and the notes.
Your ability to transfer the notes may be limited by the absence of an active trading market, and there is no assurance that any active trading
market will develop for the notes.
The notes are a new issue of securities for which there is no established public market. Although we have registered the sale of the notes
under the Securities Act of 1933, as amended, we do not intend to list the notes for trading on any securities exchange or arrange for any quotation
system to quote prices for them. The underwriters have informed us that they intend to make a market in the notes, as permitted by applicable laws
and regulations; however, the underwriters are not obliged to make a market in the notes, and they may discontinue their market-making activities
at any time without notice. Therefore, we cannot assure you that an active market for the notes will develop or, if developed, that it will continue.
In the absence of an active trading market, you may not be able to transfer the notes within the time or at the price you desire.
If we or the master partnership were treated as a corporation for U.S. federal income tax purposes, or if we or the master partnership were to
become subject to additional amounts of entity level taxation for state tax purposes, then the amount of cash available for payment of principal
and interest on the notes would be substantially reduced.
Current law may change so as to cause us or the master partnership to be treated as a corporation for U.S. federal income tax purposes or
otherwise subject us or the master partnership to entity level taxation. For example, the Obama administration's budget proposal for fiscal year
2017 recommends that certain publicly-traded partnerships earning income from activities related to fossil fuels be taxed as corporations beginning
in 2022. From time to time, members of the U.S. Congress propose and consider substantive changes to the federal income tax laws that affect
publicly traded partnerships. If successful, any such proposals could eliminate the exception upon which the master partnership relies for its
treatment as a partnership for U.S. federal income tax purposes. We are unable to predict whether any of these changes, or other proposals, will be
reconsidered or will ultimately be enacted.
In addition, the Internal Revenue Service, on May 5, 2015, issued proposed regulations concerning which activities give rise to qualifying
income within the meaning of Section 7704 of the Internal Revenue Code. We do not believe the proposed regulations affect the master
partnership's ability to qualify as a publicly traded partnership. However, finalized regulations could modify the amount of gross income that we or
the master partnership are able to treat as qualifying income for the purposes of the qualifying income requirement.

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If we or the master partnership were treated as a corporation for U.S. federal income tax purposes, we or the master partnership would pay
U.S. federal income tax on our taxable income at the corporate tax rate (which is currently a maximum of 35%) and would likely pay additional
state income tax at varying rates. In addition, at the state level, because of widespread state budget deficits and other reasons, several states are
evaluating ways to subject partnerships to entity level taxation through the imposition of state income, franchise and other forms of taxation.
Imposition of either U.S. corporate income tax or these entity-level state taxes on our income could negatively impact the amount of cash available
for payment on the notes and on our other debt obligations.

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Table of Contents
USE OF PROCEEDS
We expect to receive net proceeds from this offering of approximately $539.2 million from the sale of $550.0 million aggregate principal amount
of notes we are offering (after deducting underwriting discount and estimated offering expenses). We intend to use the net proceeds for general
partnership purposes, which may include, among other things, growth capital expenditures, repayment of future maturities of long-term debt and
additions to working capital. Pending such use, we intend to temporarily use the proceeds to reduce borrowings under our revolving credit facility.
As of May 10, 2016, the amount outstanding under our revolving credit facility was $370.0 million with a weighted average interest rate of
1.69%. The outstanding borrowings under our revolving credit facility were primarily used to fund our growth capital expenditures and to
refinance other long-term debt. Interest is determined, at the master partnership's election, by reference to (a) the base rate which is the highest of
(1) the prime rate, (2) the federal funds rate plus 0.50%, and (3) the one month Eurodollar Rate plus 1.0%, plus an applicable margin, or (b) the
London Interbank Offered Rate (LIBOR) plus an applicable margin. Our revolving credit facility has a maturity date of May 26, 2020.
Affiliates of Barclays Capital Inc., Deutsche Bank Securities Inc., J.P. Morgan Securities LLC, Citigroup Global Markets Inc., Mitsubishi
UFJ Securities (USA), Inc., Mizuho Securities USA Inc., RBC Capital Markets, LLC, Wells Fargo Securities, LLC, Merrill Lynch, Pierce, Fenner
& Smith Incorporated, Regions Securities LLC, Santander Investment Securities Inc., U.S. Bancorp Investments, Inc., BB&T Capital Markets, a
division of BB&T Securities, LLC, Goldman, Sachs & Co. and Morgan Stanley & Co. LLC are lenders under our revolving credit facility and will
receive their respective share of any repayment of amounts outstanding under our revolving credit facility with the proceeds of this offering.

S-9
Table of Contents
CAPITALIZATION
The following table shows the master partnership's cash and cash equivalents and capitalization as of March 31, 2016:

· on a consolidated historical basis;

· as adjusted to give effect to this offering of $550.0 million in aggregate principal amount of the notes and the application of the net

proceeds therefrom in the manner described under "Use of Proceeds."
This table is derived from, and should be read together with, the master partnership's historical financial statements and the accompanying notes
incorporated by reference in this prospectus. You should also read this table in conjunction with "Use of Proceeds" included elsewhere in this
prospectus supplement and "Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Financial Statements"
appearing in the master partnership's Quarterly Report on Form 10-Q for the quarter ended March 31, 2016 which is incorporated by reference in
this prospectus.

As of March 31, 2016

Historical
As Adjusted

(in millions)

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424B2
Cash and cash equivalents

$
9.3

158.5
Long-term debt:

Revolving credit facility (1)

390.0

--
Notes and debentures:

Boardwalk Pipelines:

4.95% notes due 2024

600.0

600.0
3.375% notes due 2023

300.0

300.0
5.75% notes due 2019

350.0

350.0
5.20% notes due 2018

185.0

185.0
5.50% notes due 2017

300.0

300.0
5.875% notes due 2016

250.0

250.0
5.95% notes due 2026 (the notes offered hereby)

--

550.0
Texas Gas:

7.25% debentures due 2027

100.0

100.0
4.50% notes due 2021

440.0

440.0
Gulf South:

4.00% notes due 2022

300.0

300.0
6.30% notes due 2017

275.0

275.0
Unamortized debt discount and issuance costs

(23.7)

(34.5)

Total long-term debt (2) (3)

$ 3,466.3
$
3,615.5

Equity:

Common units

4,400.2

4,400.2
General partner interest

86.3

86.3
Accumulated other comprehensive loss

(83.1)

(83.1)

Total partners' capital

4,403.4

4,403.4

Total capitalization

$ 7,869.7

8,018.9

(1)
The amount outstanding under our revolving credit facility as of May 10, 2016 was $370.0 million with a weighted average interest rate of
1.69%.
(2)
We also have access to a $300.0 million subordinated loan provided by BPHC. As of March 31, 2016, there were no borrowings outstanding
under the subordinated loan.
(3)
At March 31, 2016, we also had a $9.0 million long-term capital lease obligation which is not reflected in the table above.

S-10
Table of Contents
DESCRIPTION OF THE NOTES
We will issue the notes offered hereby under a senior indenture dated as of August 21, 2009, between us, the master partnership, as
guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee, as amended and supplemented by the fifth supplemental indenture
thereto. The fifth supplemental indenture sets forth certain specific terms applicable to the notes offered hereby, and references to the "indenture"
in this description mean the senior indenture as so amended and supplemented by the fifth supplemental indenture. References to the "notes" in this
Description of the Notes refer to the notes offered hereby. You can find the definitions of various terms used in this description under "--Certain
Definitions." The terms of the notes include those set forth in the indenture and those made a part of the indenture by reference to the Trust
Indenture Act of 1939, as amended.
This description is intended to be an overview of the material provisions of the notes and the indenture. This summary is not complete and is
qualified in its entirety by reference to the indenture. You should carefully read the summary below, the description of the general terms and
provisions of our debt securities set forth in the accompanying base prospectus under "Description of Debt Securities" and the provisions of the
indenture that may be important to you before investing in the notes. This summary supplements, and to the extent inconsistent therewith replaces,
the description of the general terms and provisions of our debt securities set forth in the accompanying base prospectus. Capitalized terms defined
in the accompanying base prospectus or in the indenture have the same meanings when used in this prospectus supplement unless updated herein.
In this description of the notes, all references to "we," "us" or "our" are to Boardwalk Pipelines, LP only, and not to Boardwalk Pipeline Partners,
LP or to any of Boardwalk Pipelines, LP's subsidiaries, unless otherwise indicated. References in this description of the notes to "the master
partnership" or "the guarantor" refer only to Boardwalk Pipeline Partners, LP, and not to any of its subsidiaries.
The indenture does not limit the amount of debt securities that we may issue. Debt securities may be issued under the indenture from time to
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