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  4. ›Z--ALPO STABILIZATION OF STAPLE BEND TUNNEL

U.S. Department Of The Interior·District of Columbia

Z--ALPO STABILIZATION OF STAPLE BEND TUNNEL

Closes 10/30/2026$2M – $5MRequest for Proposal
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Description

The National Park Service is seeking a qualified contractor to perform stabilization work on the historic Staple Bend Tunnel at the Allegheny Portage Railroad National Historical Site. The effort is a small‑business set‑aside, firm‑fixed‑price contract covering design‑build or construction services required to secure the tunnel structure, ensure public safety, and preserve the historic resource. The period of performance runs from early November 2026 through the end of December 2027, with a mandatory site visit scheduled for late August 2026. Interested firms must submit offers by the extended deadline of 4 PM MT on 30 Oct 2026. • Scope: Structural stabilization, shoring, drainage, and related civil‑engineering work on a 19th‑century railway tunnel. • Location: Staple Bend Tunnel, Johnstown, PA 15942 (site visit 26 Aug 2026, 10 AM ET). • Contract type: 100 % Small Business Set‑Aside, Firm‑Fixed‑Price. • Funding: Federal (NAICS 237990). • Performance period: 11/09/2026 – 12/31/2027 (≈13 months). • Mandatory requirements: Completion of site‑visit (not mandatory but strongly encouraged), acknowledgment of amendment, compliance with FAR clauses. • Submission: Electronic/physical offer by 1600 MT, 30 Oct 2026.

Attached files

Contact

Brian McCabe(Contracting Officer)

[email protected]

(202) 339-7772

Key dates

Opened
8/21/2026
Site visit
8/26/2026
Closes
10/30/2026
Duration
13 months

Last updated

Details

Type
Request for Proposal
Industry
Construction
NAICS
237990
Solicitation №
140P4226R0026

Budget estimate

$2,000,000 – $5,000,000

Based on comparable historic‑preservation tunnel stabilization projects funded by federal agencies, the contract is likely to fall in the low‑to‑mid multi‑million‑dollar range. A 13‑month, small‑business set‑aside for extensive structural shoring, drainage, and safety upgrades typically costs between $2 M and $5 M, depending on site conditions, material costs, and labor rates.

AI estimate from the solicitation

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