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    1. Home
    2. /Gov Explore
    3. /PSC Codes
    4. /PSC Y1LC

    Product & Service Code

    PSC Y1LC: CONSTRUCTION OF TUNNELS AND SUBSURFACE STRUCTURES

    158 contracts match PSC Y1LC (CONSTRUCTION OF TUNNELS AND SUBSURFACE STRUCTURES). Previewing the latest 10 opportunities and the buyer and NAICS mix behind this procurement category.
    PSC Y1LCPreviewing 10 opportunities
    View PSC definition →
    Contracts
    158
    Records under this PSC
    Agencies in Preview
    2
    Distinct buyers in the latest sample
    NAICS in Preview
    2
    Adjacent demand lanes

    Latest opportunities

    Previewing the latest 10 opportunities classified under PSC Y1LC.

    DEPT OF DEFENSE

    CONSTRUCT INTERIM REMEDIAL ACTION (IRA) FOR THE NELSON TUNNEL SUPERFUND SITE

    Active

    AI Summary

    The U.S. Army Corps of Engineers Omaha District plans to issue an RFP for the construction of an interim remedial action at the Nelson Tunnel Superfund Site. The project involves constructing a bypass adit, rehabilitating the tunnel, and installing flow control structures to prevent uncontrolled water release. Proposal…

    NE

    Posted Oct 16, 2026Due Nov 20, 2026PresolicitationNAICS 237990Sol: W9128F27RA056
    View details→

    DEPT OF DEFENSE

    USACE SPK DBB CONSTRUCTION - SACRAMENTO RIVER EAST LEVEE CONTRACT 5 (SREL C5), SACRAMENTO, CALIFORNIA

    Archived

    AI Summary

    The USACE is seeking small business firms for the Sacramento River East Levee Contract 5 project in Sacramento, California. This Sources Sought Notice aims to assess market capabilities for levee repair and remediation, with an estimated construction cost between $6 million and $9 million. Interested contractors should…

    CA

    Posted Oct 8, 2026Due Oct 23, 2026Sources SoughtNAICS 237990Sol: W9123827X1CQR
    View details→

    DEPT OF DEFENSE

    USACE SPK DBB CONSTRUCTION - LAR C3B NORTH - SACRAMENTO, CA

    Archived

    AI Summary

    The US Army Corps of Engineers anticipates a design-bid-build construction project for erosion control and levee strengthening along the Lower American River in Sacramento, CA. The project is expected to span approximately 1.8 miles and be completed within 480 days. The solicitation will be set aside for small business…

    CA

    Posted Oct 2, 2026Due Oct 20, 2026PresolicitationNAICS 237990Total Small Business Set-Aside (FAR 19.5)Sol: W9123827BA001
    View details→

    DEPT OF DEFENSE

    USACE SPK DBB CONSTRUCTION - LAR C3B SOUTH - SACRAMENTO, CA

    Archived

    AI Summary

    The US Army Corps of Engineers anticipates a design-bid-build construction project for erosion control and levee strengthening along the Lower American River in Sacramento, CA. The project is expected to be set aside for small businesses, with an estimated budget of $45 million to $60 million. Bids are tentatively due …

    CA

    Posted Oct 1, 2026Due Oct 20, 2026PresolicitationNAICS 237990Total Small Business Set-Aside (FAR 19.5)Sol: W9123827BA002
    View details→

    DEPT OF DEFENSE

    USACE SPK CONSTRUCTION - NATOMAS PP5, SACRAMENTO, CA

    Archived

    AI Summary

    The US Army Corps of Engineers is soliciting bids for the construction of a new pumping plant facility in Sacramento, CA, as part of the Natomas Basin Project. This project involves demolishing the existing facility and constructing a new one to enhance levee improvements. Interested bidders should refer to the full so…

    CA

    Posted Sep 30, 2026Due Sep 29, 2026SolicitationNAICS 237990Sol: W9123826BA012
    View details→

    DEPT OF DEFENSE

    USACE SPK DBB CONSTRUCTION - NATOMAS REACH I CONTRACT 2 - SACRAMENTO, CA

    Archived

    AI Summary

    The US Army Corps of Engineers seeks bids for design-bid-build construction services for the Natomas Reach I Contract 2 in Sacramento, CA. The project involves slope flattening, utility relocation, and construction of a maintenance road, with an estimated cost of $10 million to $13 million. A pre-bid conference is sche…

    CA

    Posted Sep 18, 2026Due Sep 16, 2026SolicitationNAICS 237990Total Small Business Set-Aside (FAR 19.5)Sol: W9123826BA010
    View details→

    DEPARTMENT OF ENERGY

    LBNF/DUNE-US NEAR SITE PROJECT – REQUEST FOR INDUSTRY INPUT ON UPCOMING CM/GC PROCUREMENT

    Archived

    AI Summary

    The Department of Energy is seeking industry input on the upcoming CM/GC procurement for the LBNF/DUNE-US Near Site Project. This Request for Information aims to gather feedback on the procurement approach and contractual terms. Participation is voluntary and does not guarantee any future procurement advantages.

    IL

    Posted Sep 9, 2026Due Oct 2, 2026PresolicitationNAICS 237Sol: LBBF-NSCF-09092026-RR
    View details→

    DEPT OF DEFENSE

    Emergency Water Conveyance Prototype (EWCP)

    Archived

    AI Summary

    The Department of Defense is seeking proposals for the Emergency Water Conveyance Prototype to protect the Mendenhall Valley in Juneau, Alaska from glacial lake outburst floods. The project involves developing a proof of concept and constructing a system to manage water levels and discharge rates effectively. Proposals…

    AK

    Posted Sep 1, 2026Due Sep 4, 2026SolicitationNAICS 237990Sol: W911KB26RWP02
    View details→

    DEPT OF DEFENSE

    Industry Day - Information Session on the Emergency Water Conveyance Prototype (EWCP), Juneau, Alaska

    Archived

    AI Summary

    The U.S. Army Corps of Engineers is hosting an Industry Day for the Emergency Water Conveyance Prototype in Juneau, Alaska, on August 21, 2026. This event aims to provide an overview of the challenges in the Mendenhall Valley and the proposed solutions. Interested Offerors must register by August 20, 2026, to attend in…

    AK

    Posted Aug 24, 2026Due Aug 21, 2026Special NoticeNAICS 237990Sol: W911KB26RWP02_INDUSTRY
    View details→

    DEPT OF DEFENSE

    LOWELL CREEK FLOOD DIVERSION AT SEWARD, ALASKA

    Archived

    AI Summary

    The Lowell Creek Flood Diversion project in Seward, Alaska, is currently on hold. Originally intended to construct a new flood diversion system, the project will now focus on rehabilitating the existing tunnel. Interested parties should monitor SAM.gov for future updates.

    AK

    Posted May 12, 2026Special NoticeNAICS 237990
    View details→

    Buyer snapshot

    Agencies and NAICS codes visible in the latest PSC sample.

    Agencies in Preview

    DEPT OF DEFENSE→DEPARTMENT OF ENERGY→

    Adjacent NAICS Codes

    NAICS 237990NAICS 237

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