Attachment C-1_Bid Reference Document for Bridge Removal~1.pdf

This is a bid reference document memo from the Oregon Department of Transportation (ODOT) Bridge Engineering Section dated November 5, 2025, addressed to Richard Garrison, ODOT Region 1 Maintenance & Operations Project Manager, regarding the NB Boone Bridge (I-5 over Willamette River at MP 283.11) Joint Rehabilitation Project (Structure No. 02254A). The memo, prepared by Paul Strauser, Region 4 Bridge Lead Engineer, serves as an engineer of record document providing contractors with necessary information to prepare accurate bids for the removal of existing temporary work access and containment (TWAC) structures at pier 1. The document includes a plan sheet from existing bridge plans and photographs of the existing TWAC platform to enable contractors to understand the scope of removal work and submit appropriate bids.

The memo communicates that the existing TWAC platform at pier 1 is in poor condition and has been identified for removal as part of the broader NB Boone Bridge rehabilitation project. The location and limits of the TWAC are identified on the referenced plan sheet, with photographic documentation provided to convey the structural composition and condition. The primary purpose of this bid reference document is to furnish contractors with sufficient information regarding the existing conditions and removal requirements so that they can reasonably estimate costs and develop competitive bids for performing the removal work as part of the larger joint rehabilitation and reconstruction project.