The Bonneville Lock and Dam Navigation Lock 1 Bridge Replacement project will replace the existing bridge with a new fixed single-span steel girder bridge on a new alignment immediately downstream, including partial demolition, approach roadways, rock-anchored and drilled-shaft abutments, and lead/asbestos removal. The existing bridge must remain open for critical vehicular access throughout construction, likely requiring phased work, and the contractor must address environmental/seasonal restrictions and barge crane lifting near a high-voltage power line. Recent amendments revise specifications for traffic control, construction management platform, ground anchor and jet grouting qualifications, temporary environmental controls, and instructions, and provide additional Government Furnished Information such as power line layout. The period of performance is amended to allow in-water work during the 2029 and 2030 In Water Work Window years, with environmental permits and IHA marine mammal protections remaining unchanged and no IHA-governed in-water work allowed beyond permitted years. Work is performed at Bonneville Lock and Dam.

The Bonneville Lock and Dam Navigation Lock 1 Bridge Replacement project will replace the existing bridge with a new fixed single-span steel girder bridge on a new alignment, including partial demolition of the existing bridge and new approach roadways. The new bridge will be 34’4½” out-to-out with two 11’ travel lanes, two 2’ shoulders, a 5’ sidewalk, four built-up steel plate girders, a rock-anchored concrete stub north abutment, and a drilled-shaft-supported south concrete abutment. Work includes seismic mitigation, lead and asbestos removal, phased construction to keep critical vehicular access open throughout, environmental/seasonal restrictions, and barge crane lifting near a high voltage power line. Recent amendments revise specifications for ground anchors, jet grouting, supplementary conditions, and temporary environmental controls/archaeological monitoring; add power line layout GFI; and amend the period of performance to allow work during the 2029 and 2030 In Water Work Window years, with no IHA-governed in-water work beyond the permit years. A site visit requires registration by COB September 9, 2026, and attendees must be U.S. citizens with acceptable REAL ID/citizenship documentation.

The project replaces the Navigation Lock 1 Bridge at Bonneville Lock and Dam with a new single-span steel girder fixed bridge on a new alignment, including partial demolition of the existing bridge and construction of approach roadways. The new bridge will be approximately 34’4½” wide with two 11’ travel lanes, shoulders, a sidewalk, four built-up steel plate girders, a north stub abutment anchored into rock, and a south abutment supported by drilled shafts. Construction will require phased work to keep the existing bridge open for critical vehicular access, plus lead/asbestos removal, environmental and seasonal restrictions, and barge crane lifting near high-voltage power lines. Recent amendments update ground anchor and jet grouting qualifications, add an archaeological monitor provision and Government Furnished Information (Power Line Layout), and amend the period of performance to allow work during the 2029 and 2030 In Water Work Window years while environmental permits and IHA marine mammal protections remain in effect. An additional site visit requires advance registration, and attendees must be U.S. citizens with REAL ID for site access.

The contract involves replacing the existing bridge at the Bonneville Lock and Dam Navigation Lock with a new fixed single-span steel girder bridge on a new alignment, including partial demolition of the old bridge and construction of approach roadways. The new bridge will feature two travel lanes, shoulders, and a sidewalk, and will be located immediately downstream of the existing bridge near a high-voltage transmission tower. Performance will occur at the Bonneville Lock and Dam, where critical vehicular access must remain open throughout construction, likely requiring phased work. The project also includes lead and asbestos removal, work within environmental and seasonal restrictions, and barge crane lifting in close proximity to high-voltage power lines. Recent amendments added government-furnished information and introduced changes to environmental controls and bidding instructions.

The U.S. Army Corps of Engineers is seeking bids to replace the existing bridge at Bonneville Lock and Dam’s Navigation Lock 1 with a new fixed, single-span steel girder and concrete deck bridge on a new alignment, including partial demolition of the old bridge and construction of approach roadways. The performance location is the Bonneville Lock and Dam project. The existing bridge provides critical vehicular access and must remain operational throughout construction, which will likely require phased work. The project involves lead and asbestos removal, operations within environmental and seasonal restrictions, and barge crane lifts near a high-voltage power line. An amendment provides additional government-furnished information about the power line layout, but the contractor is responsible for field verification, and the solicitation plan set governs if discrepancies exist.

The project involves replacing the existing bridge at Bonneville Lock and Dam with a new fixed steel girder bridge on a new alignment, including partial demolition of the old bridge and construction of approach roadways. The new bridge will have two travel lanes, shoulders, and a sidewalk, with a larger underclearance over the navigation channel. Work requires phased construction to keep critical vehicular access open, removal of lead and asbestos, and barge crane lifting near high-voltage power lines within environmental restrictions. The performance location is the Bonneville Lock and Dam navigation channel. No budget or performance timeline is specified in the description.

The project involves replacing the existing bridge at Bonneville Lock and Dam with a new single-span steel girder bridge on a new alignment, including partial demolition of the existing bridge and constructing approach roadways. The new bridge will be 34’4½” wide with two travel lanes, shoulders, a sidewalk, and four steel plate girders, and it will provide greater under-clearance over the navigation channel. The north abutment will be on a spread footing anchored in rock, while the south abutment will use drilled shafts. The existing bridge must remain open during construction, likely requiring phased work, with lead and asbestos removal, environmental and seasonal restrictions, and barge crane lifts near a high-voltage power line. The amendment provides additional government-furnished information (power line layout) that must be field verified, with the solicitation plan set taking precedence.

The project involves replacing an existing bridge with a new fixed single-span steel girder bridge on a new alignment, including partial demolition of the existing bridge. It will be located at the Bonneville project, providing critical vehicular access that must remain open throughout construction, likely requiring phased work. The scope includes approach roadways, new abutments, seismic mitigation, and lead/asbestos removal. Environmental and seasonal restrictions apply, and barge crane lifting will be required in close proximity to a high-voltage power line. No budget or performance timeline is specified in the description.