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Home>Projects and Programs>U.S. 101 Improvement Project (Capitol Expressway to Yerba Buena Interchange)

U.S. 101 Improvement Project (Capitol Expressway to Yerba Buena Interchange)

Image of Capitol Expressway interchange 4-28-14
Image of Capitol Expressway interchange 4-28-2014


The project made improvements to Interchange at Capitol Expressway and ramp modifications at Yerba Buena Road. View a map of the project location.


The purpose of this project was to reduce traffic congestion and improve safety along the U.S. 101 corridor in east San Jose by eliminating mainline traffic bottlenecks and removing merging and weaving conflicts.

Project Features

The proposed improvements:
  • Constructed a separate Yerba Buena Road off-ramp from southbound U.S. 101
  • Constructed a southbound U.S. 101 auxiliary lane between the Capitol Expressway and Yerba Buena Road.
  • Modified Capitol Expressway Interchange from full cloverleaf to partial cloverleaf.
  • Extended the fifth southbound lane from north of Capitol Expressway to south of Yerba Buena Road.
  • Constructed northbound slip on-ramp from northbound collector - distributor road.


Caltrans operates and maintains the highway improvements.

Capitol Cost / Project Funding

$22.4 million in Corridor Mobility Improvement Account (CMIA)
$1.1 million in Regional Surface Transportation Program (RSTP)
$7.1 million in Local Funds
$30.6 million Total Funding

Project Schedule

Construction Start - Fall 2012
Completed - Early 2014

Project Fact Sheet

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