To access more information about the individual projects associated with ACCMA's I-580 Corridor Improvement Program, click on different projects on the list above.
I-580 Tri Valley Corridor Improvements Overview
Improvements to the I-580 Corridor range from Intelligent Transportation Systems already installed to east- and westbound Express Lanes that will be fully operational by 2013.
The Alameda County Congestion Management Agency began sponsoring improvements on this important corridor in 2006 with the I-580 TMP/TOS/ITS Advanced Elements Project. This included installation of traffic monitoring devices, such as ramp meters and changeable message signs along I-580, as well as other traffic monitoring devices along I-680, SR-84 and local arterials. Installation of ramp metering equipment for all the on-ramps in both directions along I-580 from Foothill Boulevard to Greenville Road was completed in 2008. Ramp metering started in early 2009.
Next came the I-580 Springtown Sound Wall on the north side of I-580 between Vasco Road and Springtown, which was completed in 2007.
In August 2008, construction began for what was then the I-580 Eastbound HOV Lane Project. It now has become the Eastbound Express Lanes project, bringing two new express lanes from Hacienda over-crossing to Greenville Road.
All drivers will need a FasTrak toll tag to use the two new Express Lanes. Solo drivers will pay a toll electronically while carpools, transit users, motorcycles and other HOV vehicles can use the lanes for free. There will be no tollbooths, only electronic tolling using FasTrak toll tags. The I-580 Eastbound Express Lanes Project, which includes auxiliary lanes and sound walls, is expected to be completed in 2011.
The I-580 Westbound Express Lane Project is undergoing environmental review and is anticipated to open in 2013. The additional lane is being designed as HOV, but will be converted to an Express Lane. ACCMA is studying the feasibility of converting it to two westbound lanes for drivers with toll tags. Solo drivers will pay a toll electronically while carpools, transit users, motorcycles and other HOV vehicles can use the lanes for free.
The ACCMA, in cooperation with Caltrans and a design consultant, has prepared a project study report assessing various alternatives for a direct connector HOV lane from Westbound I-580 to Southbound I-680. The project study report for the I-580 / I-680 Interchange Modification Project was completed in 2008, but implementation depends on significant funding commitments.
The ACCMA is currently investigating options to preserve the right-of-way for a future transit corridor along I-580 from Hacienda over-crossing to Greenville Road. The ACCMA’s design consultant is currently identifying land uses and working on developing cost estimates to preserve the required right-of-way necessary to accommodate a future transit corridor in the median of I-580.
Work is also underway on a westbound auxiliary lane along I-580 between Fallon Road and Tassajara Road. This is a part of the ACTIA Measure B delivery plan and is being constructed as a part of the City of Dublin’s Fallon Road Interchange Improvement Project.