Project Study

Project Study Report

A Project Study Report (PSR) for the 5th Street Bridge Replacement Project was completed in May 2013. The PSR documents the various project alternatives that were developed and evaluated by the project design team. To access the PSR, please click the link below:

pdfView Project Study Report

Preparation of the PSR included initial topographic survey data collection, research of existing utilities, traffic data collection and analysis, hydraulics analysis, preliminary foundation design, and property research/preliminary identification of right of way needs. Coordination with other agency stakeholders, such as the Union Pacific Railroad, Central Valley Flood Protection Board, Marysville Levee District, and Levee District No. 1 (Yuba City side), was initiated during this phase and will continue throughout the project.

The project design team developed and evaluated 4 alignment alternatives, including modifications to the bridge approaches in both Yuba City and Marysville. The team also considered vehicular, pedestrian, and bicycle modes of transportation in the development of the alternatives. The existing abandoned railroad structure was included in the studies, but is not a part of the locally preferred alternative due to the cost to bring the structure up to current seismic standards.

During development of the project alternatives, public workshops were held to inform the public of the proposed project and to solicit input from the public on the alternatives and approach alignments. Please check the Public Participation area of this website for additional information.

Through the public outreach, input from both City Councils and evaluation of alternatives, the project design team has developed an alignment and project description that best addresses the need and purpose of the project. The project is proposed to include the following:

  • Construction of a new four-lane bridge over the Feather River and 2nd Street;
  • Expansion of 5th Street from two lanes to four lanes between the new bridge and J Street in Marysville, including four lanes under the existing Union Pacific Railroad underpass;
  • Improvements to the 5th Street and J Street Intersection in Marysville including a new eastbound dedicated right turn lane on to J Street and reconstruction of sidewalks and curb ramps to current ADA standards;
  • Widening of the eastbound bridge approach roadway between 2nd Street and Shasta Street in Yuba City, from two lanes to four lanes;
  • Reconstruction of the eastbound bridge approach, including removal of the abandoned UPR underpass above the on-ramps;
  • Realignment of 2nd Street under the overcrossing, construction of a raised median, extension of the left turn lane from 2nd Street to westbound Bridge Street, and construction of a new dedicated on-ramp from Sutter Street to westbound Bridge Street north of the bridge; and
  • Add signalized intersections at the 2nd Street intersections with Bridge Street and the new westbound on-ramp to Bridge Street at the intersection of Sutter Street and 2nd Street in Yuba City.

Geotechnical Soil Borings

On July 16, 2013, the Yuba City City Council authorized collection of geotechnical soil borings to aid in the foundation design for the new bridge. A total of 12 borings were collected during summer 2013 to depths of 150 feet below ground surface. One in-river boring will be performed from a barge once river levels increase enough for the barge to access the site.

Detailed Topographic Survey

On July 16, 2013, the Yuba City City Council authorized collection of detailed topographic survey data necessary for final design of the project. Cross sections are being surveyed to develop accurate ground contours and elevations of features such as existing pipelines, curbs, gutters, and other utilities are being collected.

Advanced Right of Way Planning

On July 16, 2013, the Yuba City City Council authorized grading design based on the detailed topographic survey that is being collected to accurately determine any right of way acquisition needs for the project. Detailed exhibits will be prepared for later use in the right of way acquisition process, such as developing appraisals and negotiating with property owners, which cannot begin until after the Environmental Document is approved.