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STA Projects and Construction
Interstate Highway Projects
I-80/I-680/SR-12 Interchange Project |
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The STA and Caltrans are working on the Project Approval / Environmental Document (PA/ED) phase of the project, expected to be completed in the Spring of 2008. Recent work on the interchange includes auxiliary lanes built between I-680 and SR 12. Design and construction of the interchange will be conducted in phases between 2007 and 2030.
Download an I-80/I-680/SR-12 Corridor Progress Newsletter:
Download an I-80 Interchange Fact Sheet (May 2007)
To view more information about this project, click here. |
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I-80 High Occupancy Vehicle (HOV) Lanes (Fairfield) |
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The project was completed in November 2009, adding over eight miles of HOV lanes in both directions and widening the median on I-80 from approximately Red Top Road to Airbase Parkway. The HOV lanes are now open from 5:00 a.m. to 10:00 a.m. and 3:00 p.m. to 7:00 p.m. Monday through Friday for vehicles with 2 or more occupants.
As a busy trade, travel and commuting corridor, there are approximately 150,000 vehicles traveling on Interstate 80 each day. This number increases to more than 200,000 vehicles per day through the City of Fairfield.
The new carpool lanes will enhance capacity by encouraging motorists to rideshare and reduce the number of vehicles on the highway.
HOV lanes play a crucial role in helping to support more sustainable transportation choices by providing an incentive to carpool, vanpool or take a bus.
This Proposition 1B Corridor Mobility Improvement Project (CMIA) was the first CMIA project in the Bay Area. In addition to the carpool lanes, this project also provided a new concrete median barrier and wider bridges to accommodate the new lanes.
Click here for more information on Prop 1B funding.
Download an I-80 HOV Red Top - AB Pkwy Fact Sheet (May 2007)
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I-80 High Occupancy Vehicle (HOV) Lanes (Vallejo) |
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The proposed project includes a westbound and eastbound High Occupancy Vehicle (HOV) Lane between SR 37 and the Carquinez Bridge, improvements to the Redwood Parkway/I-80 Interchange.
Download the Project Study Report (PSR):
- Report pages 1-33, including signatures (3.3MB)
- Attachments:
- A, Existing Conditions (2.4MB)
- B, Alternative 1A, Standard HOV Lanes (7.8MB)
- C, Alternative 1B, Minimum HOV Lanes (6.9MB)
- D, Alternative 2A, Turner OC with HOV Drop (16.9MB)
- E, Alternative 2B, Turner Parkway OC (16.8MB)
- F, Alternative 2C, Redwood Pkwy Interchange Mod (16.8MB)
- G, Existing and Forcasted traffic data (3.4MB)
- H, Preliminary Bridge Planning Study (0.4MB)
- I, Preliminary environmental analysis report (8.5MB)
- J, Life Cycle Cost Analysis (0.05MB)
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