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Home>Projects and Programs>Highway>I-880 HOV Widening Project (U.S. 101 to SR 237)

I-880 HOV Widening Project (U.S. 101 to SR 237)

map of I-880 High Occupancy Vehicle Lane Widening Project


This project will add approximately 4.6 miles of high-occupancy vehicle (HOV, or carpool) lane in both directions of I-880 between U.S. 101 and State Route 237 interchanges.


The purpose of this project is to reduce traffic congestion, provide a commute alternative and enhance safety for those commuting into, out of and through Santa Clara County via I-880.

Project Features

The proposed improvements would:

  • Widen I-880 from a six- to an eight-lane freeway within the existing corridor creating an HOV lane. High-occupancy vehicles, HOVs, are those cars with two or more occupants, shuttles and buses
  • Modify existing on and off ramps in the corridor
  • Construct retaining walls throughout the corridor

Maintenance of Traffic Flow

For the safety of the public and construction workers, traffic control measures (such as temporary lane closures and detours) will be used as needed. Contractors will be required to make every effort to maintain access and minimize disruptions. The public will be notified before traffic control measures are implemented.


Upon completion, Caltrans will operate and maintain the highway improvements.

Capital Cost/Project Funding

$70 million: $50 million from State’s Corridor Mobility Improvement Account (CMIA) Funds and $20 million from VTA Local Program Reserve Funds.

Project Schedule


2007-2009 Environmental Studies
2009-2011 Design and Engineering
Spring 2012 Begin Construction
Summer 2013

Complete Construction