Recently Completed Projects
  1. SR-99 Manteca Widening
  2. North I-5 Widening
  3. SR-99 Stockton Widening
  4. SR-4 Crosstown Freeway
State Route 99 Manteca 6-Lane Widening Project
This $158 million project widened a 10-mile portion State Route 99 (SR-99) from four to six lanes, beginning south of SR-120 in Manteca to just north of Arch Road in Stockton. The project also reconstructed the Main Street/ Lathrop Road Interchange; replaced the French Camp/ Turner Station Interchange; constructed soundwalls and concrete median barriers; and installed ramp metering.

Lathrop Road Interchange at State Route 99
Date Completed: July 2015
Project Partners: Caltrans District 10, City of Manteca, County of San Joaquin
Press Fact Sheet [pdf]