South Stockton Six-Lane Project

Project Fact Sheet

Project Purpose: The purpose of the project is to construct a feasible project on State Route 99, between Arch Road and the Crosstown Freeway (State Route 4), that will:
* Improve traffic operations *Improve traffic safety *Provide route continuity
Within the project limits, State Route 99 is a four-lane freeway, with interchanges located in close proximity to a major freeway-to-freeway interchange. Traffic on the mainline in the project area is highly congested. High traffic volumes, coupled with localized traffic weaving, are key factors in slowing down the main-line traffic flow to below acceptable levels. The project limits also have a high number of traffic accidents, higher than similar facilities Statewide. The project limits define a gap in route continuity, between projects to the north and south that are improving State Route 99 to 6-lanes. All projects combined would result in over seventeen and a half miles of continuous 6-lanes on State Route 99, between post miles 5.3 and 22.9, from the southern end of the City of Manteca, north into the City of Stockton.

Project Description: California Department of Transportation (Caltrans), in coordination with FHWA (Federal Highway Administration) the City of Stockton, the County of San Joaquin, and the San Joaquin County Council of Governments, is proposing to widen State Route 99 to six lanes, improve interchange spacing, and improve safety and traffic operations, in and near the City of Stockton, between the Arch Road Interchange and the Crosstown Freeway.