CO NP ROMO 407(1) Holzwarth Culvert

This solicitation calls for the removal of an existing six‑barrel corrugated metal culvert and the construction of a new steel‑girder bridge with concrete deck, abutments, micropiles, temporary stream diversion, roadway surfacing, and utility relocations within Rocky Mountain National Park (approx. 8,900 ft elevation, US HWY 34). The work must protect historic resources, maintain access to employee housing and the Holzwarth Historic Site, and comply with stringent environmental and safety standards. • Location: Holzwarth Access Road, Rocky Mountain National Park, CO (≈9 mi north of Grand Lake) • Scope: Demolition of existing culvert; install steel girder bridge (10 ft × 48 ft modular), cast‑in‑place concrete deck, new abutments, micropiles (≈180), temporary stream diversion, riprap, aggregate roadway surfacing, relocate electrical line & historic head gates • Key work items: Removal of bridge, roadway aggregate (120 ton), prefabricated steel bridge, micropiles, temporary stream diversion • Schedule: Advertisement Sep 2026 → Award Dec 2026 → Notice to Proceed Dec 2026 → Completion Nov 2027 (≈11 months) • Estimated cost: $700,000 – $2,000,000 • Access constraints: Foot‑only access, narrow 13‑ft road, limited truck turnaround, environmental protection zones • Contract type: Federal Highway Administration (FHWA) construction solicitation, governed by FAR/TAR, using FP‑24 specifications.