Alameda County Transportation Commission (CTC), in conjunction with Caltrans, has awarded a $107 million construction contract for the Interstate 680 Sunol Northbound Express Lane project.
The contract, awarded to Concord based Bay Cities Paving & Grading, is for the first phase of a two-phase project that will add a northbound carpool/express lane on I-680 from south of Highway 237 to north of Highway 84, a total of 15 miles. Construction is expected to begin early next year.
"Alameda CTC is keeping its pledge to residents and businesses throughout Alameda County by delivering critical transportation improvements and supporting local jobs with funding from the approval of sales tax Measures B and BB," said Arthur L. Dao, executive director of Alameda CTC. "It is not every day that more than $100 million in local construction work hits the street."
The first phase will widen the existing northbound I-680 freeway and construct a nine-mile express lane between Auto Mall Parkway and Highway 84. It will also modify the adjacent southbound I-680 Sunol express lane, changing the access configuration to allow drivers to enter the lane more freely, similar to the configuration of the Tri-Valley's I-580 express lane corridor.
This new project is the next in a series of Tri-Valley express lanes that have been created in recent years. The I-680 Sunol southbound express lane was the first express lane in the Bay Area, opening in 2010.
Continuing with their express lane push, in 2016, Alameda CTC opened the east- and westbound I-580 express lanes and in October the Metropolitan Transportation Commission opened the I-680 Contra Costa express lanes through the San Ramon Valley.