BN NL Bridge_As Builts_Combined drawings_AMD0007.pdf

This file is a combined set of as-built drawings for the Bonneville Navigation Lock 1 Bridge Replacement project. The document serves as Government Furnished Information (GFI) providing the contractor with existing site conditions and baseline documentation for the bridge replacement work at Bonneville Lock and Dam in Oregon.

The as-built drawings depict the current bridge configuration, site layout, existing utilities including the Bonneville Power Administration transmission tower, navigation channel dimensions, and surrounding infrastructure. These drawings establish the baseline conditions against which the contractor must design and construct the new single-span steel girder bridge with concrete deck (34'4" width with two 11'0" travel lanes, two 2'0" shoulders, and a 5'0" sidewalk) on a new downstream alignment. The drawings are critical for understanding spatial constraints, particularly the requirement that the new bridge's northern terminus fit entirely between the existing bridge and the transmission tower. Per Amendment W9127N26BA0240006 (20 October 2026), these as-built drawings were edited and serve as Attachment A16 to the solicitation. Contractors must field-verify all information, as the Government assumes no responsibility for interpretations drawn from the data; discrepancies between the plan set and GFI are resolved in favor of the solicitation plan set. The drawings support the contractor's planning for phased construction while maintaining critical vehicular access, environmental compliance, in-water work windows (2029-2030), and coordination around high-voltage power lines during barge crane operations.