Santa Maria River Bridges
updated: Jun 18, 2012, 11:38 AM

Source: Caltrans

Construction to widen the Hwy. 101 Santa Maria River

Bridges will result in overnight lane closures beginning Monday, June 18 from 7 pm to 6 am to install structural girders under the bridges. This work is expected to be noisy at times due to back up alarms and lighting for the safety of construction workers.

Following the placement of these girders, excavation work will begin in the center median north and south of the existing bridges. This work will occur at night with compaction of the soil likely taking place during the daytime hours.

Bicyclists should be aware of limited shoulder space on the bridge at all times during construction. The following detour for bicyclists is recommended. Bicyclists traveling southbound can detour along Thompson Avenue to State Route 166 East to Bull Canyon Road to Donovan Road.

Bicyclists traveling northbound can detour along Donovan Road to Bull Canyon Road to State Route 166 West to Thompson Avenue. This project will widen the bridge from two to three lanes in each direction with inside/outside shoulders and will include a bicycle path near the southbound lanes behind a concrete barrier. In addition, all existing traffic lanes will be resurfaced.

The contractor for this $31 million project is Flatiron West Inc. of Benicia, CA. The project is approximately 45% complete. It is expected to be completed in 2014.

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