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Alpo Stabilization of Staple Bend Tunnel

Issued by INTERIOR, DEPARTMENT OF THE · NATIONAL PARK SERVICE · DOI, NPS CONOPS STRATEGIC · via SAM.gov — US federal contract opportunities

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Published
17 Sept 2026
Closes
30 Oct 2026, 22:00 UTC
Reference
140P4226R0026
Location
United States
Sector
Construction & Infrastructure

Details

INTERIOR, DEPARTMENT OF THE · NATIONAL PARK SERVICE · DOI, NPS CONOPS STRATEGIC is soliciting Alpo Stabilization of Staple Bend Tunnel. Solicitation number 140P4226R0026. Classified under NAICS 237990 — Other Heavy and Civil Engineering Construction. Product/service code Z1QA — MAINTENANCE OF RESTORATION OF REAL PROPERTY (PUBLIC OR PRIVATE). Responses are due by 30 October 2026 22:00 UTC. Posted on SAM.gov, the US federal contract opportunities system; registration is required to bid.

Allegheny Portage Railroad National Historical Site (ALPO) - Tunnel Stabilization of Staple Bend Tunnel Amendment 0001 extends the closing date and time to Friday, October 30, 2026 by no later than 1600 Mountain Time. The full solicitation is now posted in SAM.gov, including all related documents. An organized site visit has been scheduled for: Wednesday, August 26, 2026, at 10 AM Eastern.

Participants will meet at

Staple Bend Tunnel - Trailhead Parking Lot (For specific directions see Section C.5) 1258 Beech Hill Road Johnstown, PA 15942 A NPS shuttle will either transport and/or lead a limited number of vehicles from the Trailhead Parking Lot to the site. Any contractors that arrive late, and miss the shuttle departure, will have to make the 2-mile hike on their own. They will NOT be allowed to drive to the site location on the trail leading to the Staple Bend Tunnel on their own once shuttle has departed.

Context for bidders

We hold 3 notices from INTERIOR, DEPARTMENT OF THE · NATIONAL PARK SERVICE · DOI, NPS CONOPS STRATEGIC, going back to September 2026 — 1 of them still open. There are 551 open Construction & Infrastructure tenders in United States. This one closes in 43 days.

Before you bid on this tender

A quick checklist to help you decide whether to bid and prepare a compliant submission for this construction & infrastructure opportunity. Always verify the details on the official source.

  • Confirm the exact closing date and time (and time zone) on the official portal — deadlines are strict and can be revised by a corrigendum.
  • Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
  • Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
  • Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
  • Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
  • Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
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