State Route 4 Operational Improvements (I-680 to Bailey Road)

The State Route 4 (SR4) Freeway Performance Initiative (FPI)/Corridor Study Management Plan (CSMP) and the SR4 Integrated Corridor Analysis (ICA) identifi ed several elements to improve operations on SR4.

The SR4 Operation Improvements Project includes a continuation of a High Occupancy Vehicle (HOV) lane on eastbound SR4 from the northbound I-680 onramp to the start of the existing HOV lane just east of SR242, as well as the addition of several sections of mixed fl ow lanes on eastbound and westbound SR4 between SR242 and Bailey Road. The project will be constructed in two phases.
  • Download comprehensive fact sheet
  • SR4 OIP PSR-PDS- Final Signed
  • PSR-PDS Attachment A Location Map
  • PSR-PDS Attachment B Overall of Alternatives and Build Packages
  • PSR-PDS Attachment C Build Alternative 1 Layouts and Typical Cross Sections-sm
  • PSR-PDS Attachment D Build Alternative 2 Layouts and Typical Cross Sections-sm
  • PSR-PDS Attachment E Build Alternative 3 Layouts and Typical Cross Sections-sm
  • PSR-PDS Attachment F Build IC 1 of 6 HOV Direct Connector-sm
  • PSR-PDS Attachment F Build IC 2 of 6 Port Chicago IC-sm
  • PSR-PDS Attachment F Build IC 3 of 6  Willow Pass IC (partial cloverleaf)-sm
  • PSR-PDS Attachment F Build IC 4 of 6  Willow Pass IC (hook ramps)-sm
  • PSR-PDS Attachment F Build IC 5 of 6 Willow Pass IC (DDI)-sm
  • PSR-PDS Attachment F Build IC 6 of 6  San Marco IC-sm
  • PSR-PDS Attachment G -Capital Outlay Support Cost Estimate
  • PSR-PDS Attachment H PEAR
  • PSR-PDS Attachment I TEPA
  • PSR-PDS Attachment J Transportation Planning Scoping Info Sheet
  • PSR-PDS Attachment K RoW Conceptual Cost Estimate
  • PSR-PDS Attachment L Risk Register
  • PSR-PDS Attachment M Draft Coop
  • PSR-PDS Attachment N SWDR final signed
  • PSR-PDS Attachment O PSR-PDS Survey Needs Questionare
  • PSR-PDS Attachment P Quality Management Plan_signed
  • PSR-PDS Attachment Q Design Scoping Checklist
  • PSR-PDS Attachment R Design Scoping Index