# LOCK AND DAM 25 NEW 1,200 FT LOCK NAVIGATION AND ECOSYSTEM SUSTAINABILITY PROGRAM (NESP)

Canonical: https://abierto.us/opportunities/w912p926ra004

- Solicitation number: W912P926RA004
- Notice type: Solicitation (first published as special notice)
- Status: Open. Offers due November 16, 2026 at 11:00 AM EST
- Department: Department of the Army
- Agency: Department of the Army
- Contracting office: W07V Endist ST Louis (W912P9)
- NAICS: 237990 Other Heavy and Civil Engineering Construction
- Product or service code: Y1PZ Construction Of Other Non-Building Facilities
- First posted: March 31, 2026
- Last posted: September 2, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/ee65c92564ab49f2a49b169edf9955d5/view

## Description

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.

## Publications

- March 31, 2026: Special notice, due May 1, 2026 at 11:00 AM EDT. Notice 2667cc6866954810bad900da91e1f05e. https://sam.gov/workspace/contract/opp/2667cc6866954810bad900da91e1f05e/view
- April 2, 2026: Special notice, due May 1, 2026 at 11:00 AM EDT. Notice 8704375bd7c34f68bc74a8163a056658. https://sam.gov/workspace/contract/opp/8704375bd7c34f68bc74a8163a056658/view
- May 4, 2026: Presolicitation, due June 12, 2026 at 11:00 AM EDT. Notice 044c9f25a8bf4299a258e10cb0235065. https://sam.gov/workspace/contract/opp/044c9f25a8bf4299a258e10cb0235065/view
- May 4, 2026: Presolicitation, due June 12, 2026 at 11:00 AM EDT. Notice 254b83c224064b73a9d86369375ceec8. https://sam.gov/workspace/contract/opp/254b83c224064b73a9d86369375ceec8/view
- May 8, 2026: Sources sought, due May 15, 2026 at 11:00 AM EDT. Notice 0167736617e24c459ab192894d419920. https://sam.gov/workspace/contract/opp/0167736617e24c459ab192894d419920/view
- June 2, 2026: Presolicitation, due July 15, 2026 at 11:00 AM EDT. Notice a6dda172d3fa484191adbc5631fadf77. https://sam.gov/workspace/contract/opp/a6dda172d3fa484191adbc5631fadf77/view
- July 14, 2026: Presolicitation, due July 14, 2026 at 10:15 AM EDT. Notice 8e18158176c647cbafb2d722e6b68fe3. https://sam.gov/workspace/contract/opp/8e18158176c647cbafb2d722e6b68fe3/view
- July 14, 2026: Solicitation, due November 16, 2026 at 11:00 AM EST. Notice 8f8193b0e9924e128abad534366aba7c. https://sam.gov/workspace/contract/opp/8f8193b0e9924e128abad534366aba7c/view
- August 17, 2026: Solicitation, due November 16, 2026 at 11:00 AM EST. Notice e12f362fe2c6419fbf7c547626ac81fd. https://sam.gov/workspace/contract/opp/e12f362fe2c6419fbf7c547626ac81fd/view
- September 2, 2026: Solicitation, due November 16, 2026 at 11:00 AM EST. Notice ee65c92564ab49f2a49b169edf9955d5. https://sam.gov/workspace/contract/opp/ee65c92564ab49f2a49b169edf9955d5/view

## Points of contact

- Whitney Dee, whitney.r.dee@usace.army.mil, 314-331-8621
- Mary Ann Coventry, mary.a.coventry@usace.army.mil

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/w912p926ra004.