Solicitation
Lock and Dam 25 New 1,200 FT Lock Navigation and Ecosystem Sustainability Program (NESP)
Department of Defense · Department of the Army
AI summaryThe Army Corps of Engineers St. Louis District is seeking proposals to build a new 1,200-foot lock at Lock and Dam 25, with a 1,200-foot upstream guard wall and a 650-foot downstream guard wall. SAM.gov lists Missouri as the place. The response due date is December 9, 2026, 10:00 AM Central (11:00 AM Eastern). More in the summary
A newer version of this notice was posted Oct 21, 2026. It moves the due date from Nov 16, 2026 to Dec 9, 2026, which is the date shown on this page. See the latest version.
AI summary Beta
Summary of another version of this notice: check what changed on SAM.gov. Some details are in the notice's attachments, which this summary didn't read. Check the attachments on SAM.gov.
The Army Corps of Engineers St. Louis District is seeking proposals to build a new 1,200-foot lock at Lock and Dam 25, with a 1,200-foot upstream guard wall and a 650-foot downstream guard wall. SAM.gov lists Missouri as the place. The response due date is December 9, 2026, 10:00 AM Central (11:00 AM Eastern).
Things to watch (4)
From the version posted Oct 21, 2026.
- Serious: Plans must be requested by email. The plans (Volumes 1-7) and the Navisworks 3D model are not posted; you must ask the contract specialist and receive them through DoD SAFE before pricing.
- Serious: Pre-proposal site visit details are in an attachment. The notice points to an update labeled 0817 for the site visit; whether attendance is required and the date are not in the text.
- Minor: Response due date extended by Amendment 0005. Amendment 0005 extended the response due date to 10:00 AM CST on December 9, 2026.
Show all 4Show fewer
- Minor: More amendments may follow. Answers to bidder questions on ProjNet are being posted in amendments, so check each one for changes.
Read from the notice text only.
Full summary
What they want
- Build a new 1,200-foot drilled-shaft-founded lock in the auxiliary miter gate bay at Lock 25
- Build a 1,200-foot upstream ported guard wall
- Build a 650-foot downstream guard wall
- Leave the existing 600-foot lock in place as an auxiliary lock chamber
- Place of performance
- MO (as SAM.gov lists it)
- Estimated value
- Not stated
- Offers due
- December 9, 2026, 10:00 AM Central
What to include when you submit
- Request Attachment 0004 Plans (Volume 1-7) and Attachment 0005 Navisworks Federated Model by email to Contract Specialist Whitney Dee at whitney.r.dee@usace.army.mil; they are sent through DoD SAFE (a secure file-transfer service)
Not in the notice text
- The full solicitation, specifications and amendments are in attachments that were not read
- Whether the pre-proposal site visit is required, and its date, are in the update labeled 0817
- Which wage rule applies, such as a Davis-Bacon wage determination (the federal minimum pay for construction workers), is not stated in the text
- Bonding requirements, set-aside, evaluation method, contract type and estimated value are not stated
- How to submit the proposal is not stated in the text
Eligibility and how to respond
- No set-aside: any business, large or small, can bid unless the notice says otherwise.
- How and where to submit is in the notice text and its attachments on SAM.gov.
- Construction contracts over $2,000 pay at least the local Davis-Bacon wage rates, from the wage determination in the solicitation. Price your labor from it: How to price a government contract, and how Davis-Bacon differs from the Service Contract Act.
Notice details
- Posted
- Jul 14, 2026
- Notice type
- Solicitation
- Office
- W07V ENDIST St Louis, Saint Louis, MO
- Product/service code
- Y1PZ · Construction of Other Non-Building Facilities
- Business type
- Construction & renovation (FedReady's grouping, from NAICS 237990)
- Versions
14 versions have been posted, newest first.
- Oct 21, 2026 · Amendment 0006Due Dec 9, 2026 (changed)
- Oct 20, 2026 · Amendment 0005Due Nov 16, 2026
- Oct 6, 2026 · Amendment 0004Due Nov 16, 2026
- Sep 16, 2026 · Amendment 0003Due Nov 16, 2026
- Sep 2, 2026 · Amendment 0002Due Nov 16, 2026
- Aug 17, 2026 · Amendment 0001Due Nov 16, 2026
- Jul 14, 2026 · Solicitation (this version)Due Nov 16, 2026 (changed)
- Jul 14, 2026 · Amendment 0001Date Jul 14, 2026 (changed)
- Jun 2, 2026 · PresolicitationDate Jul 15, 2026 (changed)
- May 8, 2026 · Sources SoughtDue May 15, 2026 (changed)
- May 4, 2026 · Amendment 0001Date Jun 12, 2026
- May 4, 2026 · PresolicitationDate Jun 12, 2026 (changed)
- Apr 2, 2026 · Amendment 0001Date May 1, 2026
- Mar 31, 2026 · Special NoticeDate May 1, 2026
- Attachments
Past awards and competition
Who has won work like this before, the likely incumbent, and what similar contracts paid, from USAspending.gov.
Before you respond
- How to respond to a solicitation (8 steps)
- How to read a government solicitation
- How to price a government contract
Terms on this notice: Solicitation
Full notice text from SAM.gov
NESP LD25 1200 ft Lock --------- The new lock at Lock 25 will be constructed in the downstream direction in the auxiliary miter gate bay, which has minimum provisions for an adjacent 360-foot-long lock and is referred to as Location 3 in the System Feasibility Study (September 2004). This contract will consist of construction of a new 1,200-foot drilled shaft-founded lock in the auxiliary miter gate bay, a 1,200-foot upstream ported guard wall, and a 650-foot downstream guard wall. The existing 600-foot lock will remain in place and once the new lock is constructed and operational, will become an auxiliary lock chamber used primarily by recreation traffic or when the 1,200 ft lock is out of service. ------------ SEE ATTACHMENT FOR FULL DETAILS OF UPCOMING REQUIREMENT SOLICITATION. --------- Attachment 0004 Plans (Volume 1-7) and Attachment 0005 Navisworks Federated Model must be requested via email to Contract Specialist, Whitney Dee at whitney.r.dee@usace.army.mil. Upon request they will be sent via DoD SAFE, since the files are too large to attach within PIEE or send via email. ------ SEE UPDATE LABELED 0817 FOR FULL DETAILS OF UPCOMING PRE-PROPOSAL SITE VISIT. -------------------- AMENDMENT 0001 provides updates in accordance with some of the ProjNet Bidder Inquiries and Government Responses posted through 31 August 2026. Additional questions and answers and updates will be provided in forthcoming amendments. See all attachments for full details.-------------------- AMENDMENT 0002 provides updates in accordance with some of the ProjNet Bidder Inquiries and Government Responses posted through 15 September 2026. Additional questions and answers and updates will be provided in forthcoming amendments. See all attachments for full details.-------------------- AMENDMENT 0003 provides updates in accordance with some of the ProjNet Bidder Inquiries and Government Responses posted through 5 October 2026. Additional questions and answers and updates will be provided in forthcoming amendments. See all attachments for full details.-------------------- AMENDMENT 0004 provides updates in accordance with some of the ProjNet Bidder Inquiries and Government Responses posted through 20 October 2026. Additional questions and answers and updates will be provided in forthcoming amendments. See all attachments for full details.-------------------- AMENDMENT 0005 extends the proposal due date to 10:00AM CST, Wednesday, December 9, 2026. See all attachments for full details.
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