The City of Orinda is situated in the Oakland/Berkeley hills immediately east of the Caldecott Tunnel on Highway 24 in Contra Costa County. The City's Public Works and Engineering Services Department maintains approximately 92 miles of public right-of-way as well as five two-lane bridges in a semi-rural community with 31 miles of creeks. "Please see bid link for more information" http://www.cityoforinda.org/bids.aspx?bidID=10