Route 237 & I-880 Interchange, Santa Clara County, CA

The $60+ million project improved the Route 237 (SR-237)/I-880 interchange and the ramps between McCarthy Boulevard, I-880, and SR-237. The improvement included seven bridge structures (crossings over Coyote Creek and city roadways), a 1,800-foot long connector structure, retaining walls, and sound walls.

PARIKH was the geotechnical engineer-of-record (EOR) for the interchange project. Our engineers prepared the initial Phase I environmental site assessment for the SR-237 corridor per FHWA and Caltrans requirements, final foundation reports for each bridge structure, and a geotechnical design and materials report for the embankment, walls, and roadways. PARIKH also provided consultation during the construction phase to the client/City of Milpitas.


The site is at a busy freeway junction with a time limit of embankment construction and a settlement waiting period. PARIKH worked with the agency and verified the design using field data to reduce the required settlement waiting period yet not affecting the design.

Project Details




Santa Clara County Traffic Authority


Mark Thomas


Gary Parikh
David Wang

Project Gallery

Route 237 & I-880 Interchange 1
Route 237 & I-880 Interchange 2
Route 237 & I-880 Interchange 3