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  Project Benefits  
Improves safety at intersections and local access
Provides traffic congestion relief for 32,000 vehicles per weekday
Supports $2 billion per year visitor economy
Facilitates movement of valuable goods to market, supports $3.8 billion per year agricultural industry

Highway 156 is one of the key projects identified by Caltrans and the Transportation Agency for Monterey County in Monterey County. This route is a major regional and interregional thoroughfare used by tourists, commuters, freight shipping vehicles, and residential travelers. The Highway 156 improvement project addresses several issues in the area to help improve congestion and safety.

The project would construct a new four-lane highway parallel to the existing Highway 156 with new interchanges constructed at Castroville Boulevard and U.S. 101 to improve safety and traffic flow in the area. The current two-lane highway will become a county road for local traffic.

The Highway 156 Corridor project emerged as the TAMC Board’s top project from its strategic planning session. TAMC is seeking available sources to fund delivery of this high priority project, including tolling and a Public-Private Partnership.

Cost Estimate
$264 million
Current Stage

Supplemental Environmental Review


Additional Information
Caltrans 156 Webpage
Community Advisory Group
Final Environmental Impact Report 156 Q&A as of 7/8/2014
Route 156 West Project Map 
156 Toll Road Study and Appendices 
Route 156 West Presentation
Public-Private-Partnerships in California
Nov. 11, 2006 Open House
Summary Report (2mb pdf)
Public-Private-Partnerships Nationally
Contact Information
Transportation Agency for Monterey County

(831) 775-0903
David Silberberger
(805) 549-3798

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