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PROJECT LIST:
Route 205, Tracy
SFOBB Detour Tie-In Labor Day 2009
Golden Valley Road
West El Camino Bridge, Sacramento
Project I-5/50, Sacramento
Route 59, Merced River
Foothill Oaks Blvd, Shingle Springs
I-5 at State Rte 14 - Tunnel/Truck Bypass
SFOBB Roll-In Labor Day 2007
Benicia Bridge, Hwy 680/780 Interchange
Hwy. 57/60 Interchange
I-580 / 880 Emergency Repair
SR-22
Route 710
Tujunga Ave Bridge
Lozanos Rd
Route 1/Santa Cruz
Route 80/Hercules
Route 128/Geyserville
Lewis Stein Road
Napa Bridge
Santa Monica I-10 Freeway
680/24 Interchange Walnut Creek
Harbor Freeway Transit Project
City of Berkeley Overcrossing
Carquinez Bridge Approach Replacement
Lake Natoma/American River Bridge
Route 5, Sylmar
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The Napa River Project consisted of constructing twin 1800 foot- long box girder bridges along Imola Avenue over the Napa River, from South Coombs St. to Gasser Drive in Napa, CA. Also included, the construction of retaining walls, two concrete slab approach structures, miscellaneous roadway improvements, and the demolition of the existing Maxwell Bridge over the river. Work began on March 12, 2005 and was completed in early 2006, with a one-year plant establishment period to follow.
The biggest challenges on the project were the construction of four cofferdams in the river and the removal of the existing Maxwell Bridge. The cofferdams were built to approximately 45' below the water level of the river and were constructed by our subcontractor, Foundation Constructors, Inc. The removal of the existing Maxwell Bridge (a lift span bridge built in 1949) was done with a 400 ton barge-mounted crane positioned in the Napa River. The crane removed the tower sections of the bridge, the counterweights, and lift span, then lowered them to barges positioned in the river for transportation to a recycler in Richmond, Calif.
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