Structural engineering and seismic retrofit
Highway 101 Bridge Rehabilitation
Pacific Infrastructure Co. · San Jose, CA · 2023
A comprehensive rehabilitation of a 1960s-era highway bridge serving 85,000 vehicles daily, including full seismic retrofit to current California standards.
The Challenge
The bridge had to remain partially operational during construction. Seismic analysis revealed the original piers were inadequate for current code requirements, requiring creative reinforcement.
Our Solution
We designed a carbon fiber wrap system for the existing piers combined with new base isolation bearings — avoiding the need for full pier replacement. Night-shift construction minimized traffic impact.
The Result
Zero lost-time incidents over 18 months of construction. Bridge rated for 75-year service life extension with full seismic compliance.