• Porter Creek Bridge - Finished 1

Porter Creek Road Bridge Replacement Project

Project # C00028

Status: Complete


Porter Creek Road (County Road Number 8801B) at Porter Creek, just past Franz Valley Road (post mile 17.10).

View/Download Location Map (PDF)


  • Replacement of the existing bridge with a 62-foot-wide by 160-foot-long single span concrete box girder bridge.
  • Widening of approach roadways
  • Construction of a left turn lane at Franz Valley Road



  • Bid Date: January 17, 2013.
  • Work Completed: Summer, 2013.
  • Official Notice of Completion: September 16, 2014.

Contact Information

Business Hours
Monday – Friday
8:00 AM – 5:00 PM
Contact us by Phone
Office Location
La Plaza B
2300 County Center Drive
Suite B 100
Santa Rosa, CA 95403
38.462023, -122.725381

Sonoma County Bridges

See More Information


See information about Sonoma County's Bridge Maintenance & Retrofit program.