W912P526CA002
Definitive Contract
Overview
Government Description
Chickamauga lock approach walls and decommissioning construction contract with base and options. The scope of work includes construction of river and middle approach walls downstream from the lock, decommissioning of the existing lock, wet commissioning of the lock chamber constructed in a previous contract, and site restoration activities. The downstream approach walls will be built using pre-cast concrete beams fabricated in 2012 and stored at a Tennessee Valley Authority (TVA) facility, extending under and through the norfolk southern railway bridge. Additional work includes construction of two new 30-FOOT diameter mooring cells downstream of the new lock, plugging portions of the existing lock chamber and associated wall culverts with concrete, installing a concrete thrust block to resist expansion in the dam, filling remaining areas with stone, and removal of miscellaneous equipment and buildings.
Awardee
Awarding Agency
Funding Agency
Place of Performance
Chattanooga, TN 37415 United States
Pricing
Fixed Price
Set Aside
None
Extent Competed
Full And Open Competition
Related Opportunity
Analysis Notes
Amendment Since initial award the Potential End Date has been extended from 09/08/31 to 09/11/31 and the Potential Award value has increased from $558,374,213 to $558,689,213.
Subcontracting Plan This Definitive Contract has an Individual Subcontract Plan. The Department of Defense has an overall small business subcontracting goal of 30%
Subcontracting Plan This Definitive Contract has an Individual Subcontract Plan. The Department of Defense has an overall small business subcontracting goal of 30%
C. J. Mahan Construction Company was awarded
Definitive Contract W912P526CA002 (W912P5-26-C-A002)
for Chickamauga Lock Approach Walls Decommissioning Construction
worth up to $558,689,213
by the Department of the Army
in March 2026.
The contract
has a duration of 5 years 6 months and
was awarded
through solicitation Chickamauga Lock Replacement Approach Wall and Decommissioning
full & open
with
NAICS 237990 and
PSC Z2KA
via direct negotiation acquisition procedures with 1 bid received.
As of today, the Definitive Contract has a total reported backlog of $366,230,288.
DOD Announcements
Feb 2026:
C.J. Mahan Construction Co. LLC, Urbancrest, Ohio, was awarded a firm-fixed-price contract for the Chickamauga Lock Approach Walls and Decommissioning Project. The amount of this action is $192,143,925, with a total cumulative face value of $558,374,213. Bids were solicited via the internet with one received. Work will be performed in Chattanooga, Tennessee, with an estimated completion date of March 9, 2029. Fiscal 2022 civil construction funds in the amount of $192,143,925 were obligated at the time of the award. U.S. Army Corps of Engineers, Nashville District, is the contracting activity (W912P5-26-C-A002).
Status
(Open)
Last Modified 4/2/26
Period of Performance
3/9/26
Start Date
3/12/29
Current End Date
9/11/31
Potential End Date
Obligations and Backlog
$192.5M
Total Obligated
$192.5M
Current Award
$558.7M
Potential Award
$0.0
Funded Backlog
$366.2M
Total Backlog
Award Hierarchy
Definitive Contract
W912P526CA002
Subcontracts
Activity Timeline
Opportunity Lifecycle
Procurement history for W912P526CA002
Transaction History
Modifications to W912P526CA002
People
Suggested agency contacts for W912P526CA002
Competition
Number of Bidders
1
Solicitation Procedures
Negotiated Proposal/Quote
Evaluated Preference
None
Performance Based Acquisition
Yes
Commercial Item Acquisition
Commercial Item Procedures Not Used
Simplified Procedures for Commercial Items
No
Other Categorizations
Subcontracting Plan
Individual Subcontract Plan
Cost Accounting Standards
Yes
Business Size Determination
Large Business
Defense Program
None
DoD Claimant Code
None
IT Commercial Item Category
Not Applicable
Awardee UEI
GGGWC8MCSGT7
Awardee CAGE
3N7D2
Agency Detail
Awarding Office
W912P5 W072 ENDIST NASHVILLE
Funding Office
W38XDD
Created By
stacy.s.wiggins@acws
Last Modified By
keith.e.frentz.civ.lrd@sc.sa
Approved By
stacy.s.wiggins@acws
Legislative
Legislative Mandates
Construction Wage Rate Requirements
Performance District
TN-03
Senators
Marsha Blackburn
Bill Hagerty
Bill Hagerty
Representative
Charles Fleischmann
Modified: 4/2/26