South Stillwater Business Park Phase 1B

This project required the construction of a 440-foot-long, 52-foot-wide, cast-in-place, post-tensioned, concrete box girder superstructure on driven steel “H” pile-supported column bents and cantilevered abutments built on a curved alignment over Stillwater Creek.

Additional improvements included a two-mile, 20-foot-wide emergency access road and offsite improvements to Rancho Road, earthwork (53,000 CY), cross drains and drainage structures, and storm water management and erosion control.

Some of the offsite improvements included widening of shoulders, overlay of Rancho Road from Airport Road to Old Oregon Trail (approximately 2,000 feet in length), driveway construction, traffic control,and 2,000 feet of PG&E distribution gas utility trenches.

CALTROP provided full construction management services to the City of Redding for this bridge construction project, including plan review, environmental documentation, assistance with bidding, inspection during construction, office engineering, utility coordination, falsework review, community outreach and project closeout.

CLIENT: City of Redding
CONTRACT VALUE: $5.6 million


  • Girder Superstructure Construction
  • Emergency Access Roadway Construction
  • Roadway Improvements


  • Construction Management
  • Inspection
  • Plan Review
  • Environmental Documentation and Permitting
  • Bidding Assistance
  • Office Engineering
  • Utility Coordination
  • Falsework Review
  • Community Outreach