I-80/San Pablo Dam Rd Interchange Reconstruction PW 483

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TRAFFIC ADVISORY: Full Overnight Closure of Eastbound and
Westbound I-80 between San Pablo Avenue and San Pablo Dam Road

Night of Saturday, October 29, 2016

Beginning at 11:00 p.m. on Saturday, October 29th through 7:00 a.m. on Sunday, October 30th,
Interstate 80 will be temporarily closed in both directions, at San Pablo Dam Road, to demolish the old Riverside Avenue pedestrian overcrossing. Traffic will be redirected to San Pablo Avenue.


This critical nighttime work is part of the I-80/San Pablo Dam Road Interchange Reconstruction Project, which includes the construction of a new overcrossing that extends across busy Amador Street, enhancing safety for Riverside Elementary School students and the community.
Night work along Amador Street will continue for approximately two weeks after the closure to demolish the overcrossing ramps. Scheduled night work hours are 6:00 p.m. to 10:30 p.m. Daytime ramp demolition will also occur along Humboldt Avenue.
In the coming months, crews will open the relocated westbound I-80 on-ramp at El Portal Drive and complete final paving and striping.

Detour Routes

Local traffic will be detoured to San Pablo Avenue. Regional traffic is advised to use State Route 4 or Interstate 780 to Interstate 680 and State Route 24 to detour around the closure area. 

I-80 Detour Map, San Pablo Dam Rd 10.24.16

I-80 Regional Detour Map, San Pablo Dam Rd 10.24.16

Relocation of El Portal Drive Westbound On-Ramp

Construction continues on El Portal Drive with an anticipated completion in early summer of 2017. For the month October the work will consist of reconstruction of masonry walls on the east side of El Portal Drive, relocation of existing utilities, sidewalk reconstruction and the reconstruction/realignment of El Portal Drive and the eastbound I-80 off ramp at El Portal Drive. Weather permitting, this work will be completed by the end of November, 2016.

Through October, 2016 there will be times where El Portal Drive will be closed at the I-80 underpass in order to reconstruct the median, sidewalk, paving, striping, and the installation of new sewer and storm drain systems along with pile driving associated with the retaining wall reconstruction. This work will occur between the hours of 8PM – 5AM Monday – Saturday of these weeks. Please plan on using the signed detours to Hilltop Drive for westbound traffic and San Pablo Dam Road for eastbound traffic. Delays are expected and your patience is appreciated. The sidewalk on El Portal Drive from Glenlock St to the Intersection of the WB I-80 off ramp will be closed. Please see the alternative pedestrian and bicycle detour as outlined in green arrows on the attachment.

Detour 15
Detour 16

Replacement of Riverside Avenue Pedestrian Overcrossing

Construction to replace the existing Riverside Avenue Pedestrian Overcrossing continues into October 2016, with construction at the Riverside Elementary School, over I-80, and at Humboldt Ave as the new overcrossing is completed. Construction times will primarily occur during the day from 7am to 6pm on Mondays through Saturday. Delays are expected and your patience is appreciated. Please plan accordingly.

Detour 9

Detour 10

General Project Information

Electronic changeable message signs will be placed in strategic locations on city streets to minimize traffic delays and public inconvenience. This is necessary as part of the I-80/San Pablo Dam Rd Interchange Reconstruction Project, which is managed by the CCTA (Contra Costa Transportation Authority). Project hotline phone number is (510) 277-0444, where you can leave a message with questions on the project and construction work.

The Contra Costa Transportation Authority (CCTA) and project partners, including the cities of San Pablo and Richmond, Contra Costa County, and Caltrans, are making every effort to provide opportunities for project neighbors to stay informed about this construction work, and have established a Project hotline phone number (510) 277-0444, where you can leave a message with questions on the project and construction work.

More information about the project can be found at:
Thank you for your cooperation during this essential work.
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PROJECT DESCRIPTION: The project is located within the City of San Pablo and unincorporated Contra Costa County and borders the City of Richmond. Proposed improvements are intended to alleviate congestion and improve traffic safety along I-80 and at the three interchanges. The project scope includes:

1. Replacement and widening of the San Pablo Dam Road Overcrossing;

2. Relocation of McBryde Avenue access from westbound I-80 (westbound direction is towards San Francisco);

3. Relocation of El Portal Drive access to westbound I-80;

4. Realignment of Amador Street to intersect with San Pablo Dam Road further east; and

5. Replacement of the I-80/Riverside Avenue Pedestrian Overcrossing serving Riverside Elementary School and extending it across Amador Street

PROJECT STATUS: Detailed project design is complete for phase 1 and construction began in late 2015.

PROJECT FUNDING: The current project cost is estimated at $118.8 million of which $38 million has been secured from multiple sources including the City of San Pablo ($3 million), Contra Costa's Measure J Transportation Sales Tax ($12 million), state ($15 million), and regional funds ($8 million).

The project is sponsored by the City of San Pablo, Contra Costa Transportation Authority, California Department of Transportation (Caltrans), in cooperation with the City of Richmond, Contra Costa County and the West Contra Costa Transportation Advisory Committee.

FOR MORE INFORMATION: Please call the project hotline at 510-277-0444 or contact Hisham Noeimi, Project Manager, at (925) 256-4731, Allyn Amsk, Caltrans Public Information Officer at (510) 286-5445.

Project website:http://www.ccta.net/projects/project/38