State Route 132/ Bird Road Interchange

San Joaquin County, California

Foothill Associates prepared an Initial Study/ Mitigated Negative Declaration (IS/MND) for Caltrans Central Region for the State Route 132 (SR 132) Interchange Improvements at Bird Road in San Joaquin County, California. The project was needed to improve existing traffic operational deficiencies associated with the Bird Road interchange with SR 132. Bird Road at SR 132 was an at-grade intersection with 2-way stop control on the Bird Road approaches. Because of significant aggregate resources located south of SR 132 in the project vicinity, large volumes of aggregate truck traffic accessed this route via the Bird Road intersection to gain access to the state highway system. The project intended to provide a grade separation necessary to improve operations. Three alternatives including the proposed project were considered in the IS/MND.


Potential environmental impacts related to biological resources, threatened and endangered species (e.g., San Joaquin kit fox Take Authorization), wetlands, water quality and storm water runoff, traffic, hazardous materials, cultural resources, utilities, and agriculture were analyzed/ discussed in the IS/MND. To support preparation of the Initial Study, Foothill Associates prepared a biological assessment, wetland delineation, and air quality analysis. Additionally, we prepared a Natural Environmental Study (NES) according to Caltrans Guidance for Consultants. Biologist identified sensitive natural resources that would potentially be impacted by the project alternatives and required mitigation. We also conducted a wetland delineation according to the 1987 U.S. Army Corps of Engineers Wetland Delineation Manual. The IS/MND was signed by Caltrans for adoption by the California Transportation Commission. Foothill Associates also prepared and submitted a Notification of Streambed Alteration to California Department of Fish and Wildlife.


Foothill Associates consulted with Caltrans District 10 staff regarding potential National Environmental Policy Act analysis for the project in response to the American Recovery and Reinvestment Act of 2009 and the potential for release of funding for the project. Foothill Associates coordinated with Caltrans District 10 staff relevant to Federal Clean Water Act Section 404 evaluation and facilitated coverage under General Order 2004-004-DWQ – Statewide General Waste Discharge Requirements for Dredged or Fill Discharges to Waters Deemed by the U.S. Army Corps of Engineers to be Outside of Federal Jurisdiction with the Central Valley Regional Water Quality Control Board.


Foothill Associates prepared an IS/MND, Natural Environmental Study, and permitting for this new interchange project in Caltrans District 10.