About the Project
US 54 Alignment Study & Preliminary Engineering
The existing bridge crossing for US 54 over the Canadian River was constructed in 1954 and rehabilitated in 1984. The rehabilitation included replacement and repair of the deck railing and deck, replacement of defective rivets with high-strength bolts, cracking repair, and repair of delamination and spalling of one the concrete columns. The bridge is comprised of three simple-span steel deck trusses, each measuring 192 feet in length and three rolled-steel girder approach spans, each 50 feet in length. The steel deck trusses include design details that require monitoring and maintenance.
Based on the age of the existing bridge design, load rating, and high truck traffic the bridge receives, options for possible future rehabilitation or replacement of the bridge is being reviewed. The first step in this review is the Phase I Alignment Study for US 54. This includes:
- Phase A Initial Evaluation of Alternatives
- Phase B Detailed Evaluation of Alternatives
- Phase C Environmental Documentation and Processing
- Phase D Preliminary Design
Phase A Initial Evaluation of Alternatives
Phase A study provided the initial evaluation and review of rehabilitation and replacement of the bridge crossing, identifying any fatal flaws and critical items of the existing conditions and identified viable alternatives. This included engineering, environmental, and public solicitation of issues. The study included alternatives that are broad and creative, looking at the big picture, and then filtered through a set of criteria established by the team to one or two viable alternatives. The Phase A Report was finalized and submitted in June 2012.
Phase B Detailed Evaluation of Alternatives
Phase B advanced the study with detailed review and analysis of possible alignments, impacts, and design that best meets the purpose and goals of the project. The goal of Phase B was to determine a preferred, viable alternative based on engineering, environmental, and public input. The Phase B Report was finalized and submitted in June 2013.
Phase C Environmental Documentation and Processing
This scope includes the completion of a Categorical Exclusion (CE) and associated resource studies and environmental compliance documentation for the proposed US 54 Canadian River Bridge Replacement Project in Logan, Quay County, New Mexico. These tasks will be completed on behalf of the New Mexico Department of Transportation (NMDOT), in cooperation with the Federal Highway Administration (FHWA). The FHWA and NMDOT have specific review requirements for federally funded transportation projects in order to comply with the National Environmental Policy Act (NEPA).
Phase D Preliminary Design
A preliminary (30%) design package is being developed for the Preferred Alternative. Preliminary design plans will be developed for the roadway improvements and new offset alignment south of Logan and the new bridge crossing of the Canadian River. Plans will be developed to a sufficient level of detail for preliminary review, input and estimates of probable cost for the project.