Highway Projects

  • I-580 Westbound HOV  Lane
  • Route 152 Trade Corridor
  • US 101 Widening (Monterey St. to SR 129)
  • US 101 Widening (Marin Sonoma Narrows)
  • SR 242 Widening
  • San Ramon Valley Boulevard Widening
  • Silver Creek (Reach 3) Bridge Replacements
  • Beijing Olympic Green Convention Center



Alameda County Congestion Management Agency


Development of drainage and signage contract documents and construction support for two construction contracts including preparation of drainage, water pollution control and sign sheets, technical specifications, cost estimate and Storm Water Data Report

Project Description

Widen westbound I-580 to construct a new HOV lane from west of Greenville Road Undercrossing to the San Ramon Road/Foothill Road Overcrossing – a distance of approximately 13 miles. The project also includes bridge widening, extensive retaining walls, and ramp improvements.

Project Highlights

  • Fast track project delivery to expedite congestion relief and meet funding deadlines
  • Preparation of contract documents scheduled within a 24 month timeframe
  • Two construction contracts to attract competitive bidding
  • Over 450 plan sheets prepared