The Alameda County Transportation Commission and Caltrans held a ribbon cutting ceremony this week to celebrate the completion of the State Route 84 Expressway Modernization and State Route 84/Interstate 680 Interchange improvement project.
The project delivers major upgrades that improve traffic operations, relieve congestion, and enhance safety along a vital route connecting the Tri-Valley and South Bay regions
The project was funded in part by $85 million from Regional Measure 3 (RM 3), which is administered by MTC's Bay Area Toll Authority. To help solve the Bay Area's growing congestion problems, voters in June 2018 approved RM 3 with 55% overall approval to finance a $4.45 billion slate of highway and transit improvements through an increase of tolls on the region's seven state-owned toll bridges.
The project conforms SR-84 to expressway standards between south of Ruby Hill Drive and the I-680 interchange in southern Alameda County. The project also improves SR-84/I-680 interchange ramps and extends the existing southbound I-680 high-occupancy vehicle/express lane northward by approximately 2 miles.
The purpose of the project is to alleviate traffic congestion, improve operations and safety, and improve bicycle access on SR-84 and at the SR-84/I-680 interchange. The project is the final segment in a series of improvements to widen SR-84 to expressway standards from I-680 in Sunol to I-580 in Livermore.
In addition to the RM3 dollars, the $244 million project was funded through a combination of local, state, and regional transportation investments. Funding sources included $122 million from Measure BB, $11 million from the State Transportation Improvement Program (STIP), $8.6 million from Senate Bill 1 (SB 1) Local Partnership Program funds, and contributions from local partners such as the Tri-Valley Transportation Council (TVTC) and the San Francisco Public Utilities Commission (SFPUC).
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