SR 4/SR 160 Connector Ramps a Pictorial Update – February 2015


The existing State Route 160/Highway 4 interchange currently includes only two of the four possible interchange movements: the eastbound Highway 4 to northbound State Route 160 connector ramp, and the southbound State Route 160 to westbound Highway 4 connector ramp. The State Route 160/Highway 4 Direct Connector Ramps project will construct two new connector ramps, one connecting westbound Highway 4 to northbound State Route 160, and one connecting southbound State Route 160 to eastbound Highway 4.

The project scope includes adding an additional 12-foot auxiliary lane to the outside of existing State Route 160 in both directions between the State Route 160/Highway 4 Interchange and the East 18th/Main Street Interchange, as well as building a soundwall extension and retaining walls.

Construction began in March 2014 and is expected to be completed winter 2015/2016, weather depending.

I recently toured the project with Ivan Ramirez, Contra Costa Transportation (CCTA) Authority Construction Manager. CCTA is a public agency by created Contra Costa voters in 1988 with the passage of Measure C to manage the county’s transportation sales tax program and provide countywide transportation planning and congestion management. It provided for a half-cent sales tax increase for twenty years (through March 2009). In November 2004, Contra Costa County voters approved Measure J with a 71% vote. The measure provided for the continuation of our county’s half-cent transportation sales tax for 25 more years.

Picture Courtesy of CCTA

Picture Courtesy of CCTA

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The form work is nearly completed for this phase, which spans Highway 4, just east of the Hillcrest exit. This is part of the 160 to 4 connector you see pictured above. The first concrete pour is scheduled for the week of March 9.

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The form work is just beginning on this phase which spans the railroad tracks. This is the Highway 4 – 160 connector

Working on the falsework , consists of temporary structures used in construction to support spanning or arched structures in order to hold the component in place until its construction is sufficiently advanced to support itself.

Working on the falsework , consists of temporary structures used in construction to support spanning or arched structures in order to hold the component in place until its construction is sufficiently advanced to support itself.

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About Kevin

Mayor - City of Oakley, Data Center Manager of Mainframe Operations and Optimization – USS-POSCO INDUSTRIES, Co-Founder and Board Member - Friends of Oakley A Community Foundation, Advisory Board – Opportunity Junction, Commissioner - Contra Costa Transportation Authority, Board Member - Tri Delta Transit and Transplan
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