California Department of Transportation

The State Route 132 West
Freeway/Expressway Project


Project Fact Sheet

SR132 West

Project Description:
StanCOG is the implementing agency and sponsor for the project. Caltrans is the lead agency under the California Environmental Quality Act and National Environmental Policy Act and is working in cooperation with the City of Modesto, Stanislaus County and the California Department of Toxic Substances Control in its proposal to construct a four-lane freeway/expressway on a new alignment

The purpose of the project is to improve regional and interregional circulation, relieve traffic congestion along existing State Route 132 (Maze Boulevard), and enhance safety and operations for the transportation network in the area.

The project would be built in two phases and begin at the intersection of existing State Route 132 (Maze Boulevard) and North Dakota Avenue and extend north along North Dakota Avenue for roughly half a mile. South of Kansas Avenue, at the proposed intersection with North Dakota Avenue, the new alignment would extend east to State Route 99 at the Needham Street overcrossing bridge. The project would also make improvements to the 5th and 6th street connections to State Route 99.

In addition, the project would encapsulate about 160,000 cubic yards of contaminated soil near the State Route 132/State Route 99 interchange by covering the soil with either concrete or clean fill. The contaminated soil sits in three soil stockpiles in Caltransí right-of-way south of Kansas Avenue, within the proposed location for the project.

In Phase 1 (slated for completion in 2018), the two build alternatives under consideration (Alternatives 1 and 2) would be identical. The project would construct a two-lane expressway with full access control and grade separations at intersections from North Dakota Avenue to State Route 99. North of Maze Boulevard, the expressway would allow access from private driveways along North Dakota Avenue. Encapsulation of the soil stockpiles would occur mostly within Phase 1.

In Phase 2 (slated for completion in 2028), the project would construct a four-lane freeway from North Dakota Avenue to State Route 99, with a single-point urban interchange at North Carpenter Road. In Phase 2, the main difference between Alternatives 1 and 2 is the off-ramp: construction of a southbound State Route 99/Needham Street off-ramp (for Alternative 1) and reconstruction of the southbound State Route 99/Kansas Avenue off-ramp (for Alternative 2).

Under the No-Build Alternative, State Route 132 (Maze Boulevard) would remain a two-lane, conventional highway, as it is today.

Project Cost:
Project funding comes from a combination of local, state, and federal sources. Phase 1 is estimated to cost approximately $72 million. Phase 2 is estimated to cost $124-$132 million. Total project cost is estimateed at $196-$204 million.

Current Schedule

 Circulate Draft Environmental Impact Report/Environmental Assessment with Remedial Action Plan

 Spring         2016

 Project Approval & Environmental Document

 Late Fall     2016

 Phase 1 - Begin Construction


 Phase 1 - Open to Traffic


 Phase 2 - Begin Construction


 Phase 2 - Open to Traffic



Contact Information:
For more information, please contact Tom Post, Project Manager, at 916-273-5436 or via email at If you have any questions related to the environmental process or corresponding documents, please contact Scott Smith, Senior Environmental Planner, at (559) 445-6172, or via email at