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State Route 120 Yosemite Avenue Interchange Improvement

State Route 120 Yosemite Avenue Interchange Improvement

The proposed project will reconfigure the westbound SR-120 on-and off-ramps from a tight diamond configuration (Type L-1) to a loop on-ramp and diagonal off-ramp configuration (Type L-7). The improvements are expected to improve traffic operations by installing traffic signals at the ramp intersections, widen the eastbound on-and off-ramps and widen Guthmiller Rd to four 12-foot-wide travel lanes. The project will also include two 6-foot-wide bike lanes and one 8-foot-wide sidewalk on the east side of Guthmiller Rd.

Information

SR 120 Yosemite Avenue Interchange Draft Environmental Document

Caltrans has prepared a draft Initial Study with Proposed Mitigated Negative Declaration for this project. The City of Lathrop, in cooperation with California Department of Transportation (Caltrans), proposes...

Project Description

The proposed project will reconfigure the westbound SR-120 on-and off-ramps from a tight diamond configuration (Type L-1) to a loop on-ramp and diagonal off-ramp configuration (Type L-7). The improvements are expected to improve traffic operations by installing traffic signals at the ramp intersections, widen the eastbound on-and off-ramps and widen Guthmiller Rd to four 12-foot-wide travel lanes. The project will also include two 6-foot-wide bike lanes and one 8-foot-wide sidewalk on the east side of Guthmiller Rd. The improvements are needed to accommodate anticipated travel demand due to the ongoing development in the area including the South Lathrop Specific Plan (SLSP) and Lathrop Gateway Business Park Specific Plan (LGBPSP). The interchange is a major entry to, and exit from, the southern portion of Lathrop, which is approved for industrial commercial development. This connection is a critical link to SR-120 for the City of Lathrop and surrounding development.

The Project is expected to:

  • Improve local access to SR-120
  • Improve regional mobility on SR-120
  • Relieve congestion on SR-120, improve traffic operations and accommodate anticipated travel demand during peak hours
  • Allow the City to continue plans for growth and expansion for economic vitalityOverhead site plan of a 120 Yosemite Avenue Interchange Improvement project, showing intersecting roads, building footprints, parking areas, landscaped green spaces, and a highway interchange.

Map: 

SR-120 Yosemite Project  Vicinity Map San Joaquin

Map: 

SR-120 Yosemite Project  Location Map San Joaquin

Partnerships: 

City of Lathrop

 

Funding and Cost: 

Funding Source: Locally Funded 

Project Cost/Programmed (x$1,000):

Project Cost/Programmed:Capital $Support $
Project Approval & Environmental Document $896
Plans, Specifications, & Estimates $3,235
Right of Way$4,480$372
Construction$31,314$3,580

Project Timeline

complete
complete

Project Initiation

June 2019

live
live

Project Approval and Environmental Document

planned
planned

Final Project Design

August 2027

planned
planned

Construction

December 2028