Home Services Projects Creeks Municipal Interchange Highway References Employment Opportunities Links Harrison Engineering 399 Taylor Blvd, Ste 100 Pleasant Hill, CA 94523 (925) 691-0450 (phone) (925) 691-0460 (fax) randell@harrison-engineering.com Questions/comments about the site? Please e-mail

Interchange Projects Route 65/Twelve Bridges Drive Interchange: $9.7 million interchange and freeway improvement project in the City of Lincoln, from PSR/PR through PS&E. Work includes upgrading 1.7 miles of conventional highway, 0.7 miles of new City roadway, a new structure over Route 65, extension of major box culverts at three creek crossing, permit processing, right of way acquisition, and environmental mitigation. The interchange developed was a modified partial cloverleaf design, which was staged to accommodate future expansion of the interchange. A PS&E package for the culvert extension was released for construction as an advance contract to better accommodate staging of the interchange and mainline construction. Route 99/Cosumnes River Blvd/Calvine Rd Interchange: This project involved the construction of a new partial cloverleaf interchange with freeway overcrossing.It required the analysis and design of roadway drainage and Strawberry Creek capacity improvements for City and County of Sacramento. Work includes new structure over Strawberry Creek, plus creek relocation and improvements, consideration of in-stream detention, detention basins for City NPDES requirements, Corps of Engineers permit processing, and environmental mitigation. Work also included design of a 12-inch water transmission main, which included special details for creek crossing and installation across the freeway.