California Department of Transportation
101\41 logo

SLO 101/41 Interchange Project

The 101/41 Interchange Project will improve operations, safety, congestion, and reduce delays.

Current Status:

  • Current Press Release
  • Granite Construction is the contractor for the project.
  • Project is estimated to cost $16,000,000
  • Project is funded with Regional Transportation Improvement Program (RTIP) and city contribution

Upcoming Tasks:

  • Install protective barrier for construction workers
  • Clear the center median of Highway 101
  • Permanently close Marchant and Santa Ynez Avenues

Construction Activities:

  • It is anticipated to maintain 4 travel lanes on Highway 101 during most construction activities.
  • Highway 41 traffic will be restricted to one travel lane in each direction during bridge construction.
  • The bridge on Hwy 101 will be constructed in three phases.
    • Phase one will construct the center span bridge (currently there is no bridge in this area).
    • Phase two will construct a new northbound Hwy 101 bridge.
    • Phase three will construct the southbound Hwy 101 bridge.
  • Anticipate beginning construction in September 2007.


  • Remove and relocate northbound Hwy. 101 on-ramp
    Widen Hwy. 41 from 4 to 6 lanes
  • Construct bike path adjacent to Hwy. 41
  • Construct median bridge on Hwy. 101 to facilitate future widening
  • Interchange area landscaping


Para información en Español, favor de llamar al (805) 549-3138

This page is maintained by: Public Affairs Department
Last updated: April 2, 2008