La Center 4th Street/Pacific Highway Roundabout, WA

Reduces vehicle queuing, improves peak hour operations, and improves intersection safety.

Quick Facts

  • A roundabout was constructed based on the results of a traffic study

  • A truck bypass lane was implemented from northbound Pacific Highway to 4th Street based on the reduced roundabout diameter due to the constrained location of the intersection

  • The roundabout addresses safety concerns associated with the left turns from westbound 4th Street onto Pacific Highway

Results

  • The roundabout addresses peak hour performance needs based on surrounding land use traffic patterns

  • Reduces vehicle queuing along 4th Street

  • Improves intersection safety

  • Provides capacity for the future development in La Center

Our Work

  • Conducted an operations analysis for existing and future conditions to determine the geometrics layout for the roundabout

  • Developed¬†final plans, specifications, and engineering estimates for lighting, signing, striping, and temporary traffic control

  • Provided engineering support during project construction

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