Solicitations › Department of the Interior › National Park Service

Z--ALPO STABILIZATION OF STAPLE BEND TUNNEL

Open — responses due 30 Oct 2026 (25 days left) · Small Business Set Aside - Total · National Park Service (NPS), DOI · NAICS 237990 · Solicitation 140P4226R0026

Solicitation details

Solicitation number	140P4226R0026
Notice ID	c9d8a9d0e80a4d378f7df7516ded59ef
Agency	Department of the Interior (DOI)
Sub-agency	National Park Service (NPS)
Contracting office	DOI, NPS CONOPS STRATEGIC
NAICS code	237990 — Other Heavy and Civil Engineering Construction
Product / service code (PSC)	Z1QA
Set-aside	Small Business Set Aside - Total
Notice type	Solicitation
Posted	17 September 2026
Response deadline	30 October 2026

Description

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.

Version history

SAM.gov has posted 3 notices under solicitation 140P4226R0026, oldest first.

06 August 2026 — Presolicitation
21 August 2026 — Solicitation
17 September 2026 — Solicitation (this page)

Documents in the solicitation package

12 files are attached to this notice.

Sol_140P4226R0026_Amd_0001.pdf
Sol_140P4226R0026.pdf
B08_-_Attachment_4_-_Location_Maps-Lab_Testing_Report-Photos.pdf
B08_-_Attachment_10_-_Proposal_Submission_Package_-_140P4226R0026.docx
B08_-_Attachment_9_-_Limitations_on_Subcontracting_compliance_worksheet.xlsx
B08_-_Attachment_6_-_ALPO_Staple_Bend_Tunnel_Preservation-1999_CDs.pdf
B08_-_Attachment_7_-_ALPO_Staple_Bend_Tunnel_-_Submittal_List.xlsx
B08_-_Attachment_8_-_CON_WD_-_PA20260002_-_Heavy_and_Highway_-_7_30_2026.pdf
B08_-_Attachment_2_-_ALPO-Staple_Bend_Tunnel-Drawings_-_7_31_2025.pdf
B08_-_Attachment_1_-_ALPO-Staple_Bend_Tunnel-Specs-Final_-_7_12_2026.pdf
B08_-_Attachment_3_-_ALPO-Staple_Bend_Tunnel-Technical_Reports.pdf
B08_-_Attachment_5_-146798-ALPO-423-41023-Topo.pdf

Download them from SAM.gov, or open the solicitation in FedSift to read them with page-cited analysis.

Go deeper on this solicitation

FedSift reads the full solicitation package — every attachment — and pre-extracts the compliance matrix, evaluation factors, key risks, win themes and deal-breakers, each with a verbatim quote and the exact PDF page it came from. It scores the opportunity against your company profile, tells you whether to bid as prime or sub, and ranks teaming partners who could close your gaps.

Open the AI analysis in FedSift →

Free forever plan — no credit card. Browse solicitations without an account; sign in for AI analysis and matching.

Market context: DOI and NAICS 237990

About the buyer and the industry, not this specific solicitation. Source: USASpending.gov award data, updated nightly.

In fiscal year 2026, DOI obligated $283.3M across 81 contract actions under NAICS 237990.
81 contracts worth $786.1M in this category end within the next 18 months.

DOI contracts under NAICS 237990 →

Other open solicitations in NAICS 237990

NAICS 237990 PSC Y1PZ--CONS: 909CM3030 Fort Custer NC - Cemetery Expansion and Site Improvements (VA-26-00046764)VA · Due 06 October 2026
GAOA Cordova Outhouse Replacement Chugach NFUSDA · Due 06 October 2026
$5B DESIGN-BUILD/DESIGN-BID-BUILD INDEFINITE DELIVERY INDEFINITE QUANTITY WATERFRONT MULTIPLE AWARD CONSTRUCTION CONTRACT ($5B DB/DBB IDIQ…DoD · Due 07 October 2026
HALEIWA SMALL BOAT HARBOR MAINTENANCE DREDGING AND REVETTED MOLE REPAIR, HALEIWA, OAHU, HAWAIIDoD · Due 07 October 2026
W912HV27BA003 FY27 Maintenance Dredging Yokohama North DockDoD · Due 07 October 2026
Z--Prosser Creek Dam Basin CleanupDOI · Due 08 October 2026
Z--Folsom Warehouse Bridge Crane ReplacementDOI · Due 08 October 2026
Tybee Island Shoreline Protection ProjectDoD · Due 09 October 2026

All NAICS 237990 solicitations →

More from Department of the Interior

F--AML PHYSICAL SAFETY HAZARD MITIGATIONDOI · Due 06 October 2026
53--AK-BETHEL ADMINISTRATIVE-WINDOW FRAMEDOI · Due 07 October 2026
Y--Rehabilitation of Water and Wastewater SystemDOI · Due 07 October 2026
Delta WH&B Facility HayDOI · Due 07 October 2026
R--Hein Online DatabaseDOI · Due 07 October 2026
WI-FWS UPR MS RIV NATL-HERBICIDE TREATMENT AT BRICDOI · Due 07 October 2026
B--MN-MORRIS WMD-ARCHEOLOGICAL SURVEYDOI · Due 07 October 2026
Y--Industry Day - TIMU Fort Caroline MemorialDOI · Due 07 October 2026

All DOI solicitations →

Source: this notice on SAM.gov. FedSift republishes public federal procurement data and is not affiliated with the U.S. Government. Always confirm dates and requirements against SAM.gov before responding.