Project History

Column Guying/Support Structures

Various guying/ support plans and working platforms for main span bridge columns

Laloma Road Bridge

Historic Concrete Arch structure reconstruction requiring demolition of all existing structure except concrete arches, then constructing a new box girder structure and ancillary arches.

Bridge over North Fork Payette River

Single span precast concrete box girder bridge built by Slide in method. Work includes falsework shoring on piles, overlook and overhang support falsework and jacking details.

Petaluma River Bridge

907' long, 117' wide, 3 stage, post tensioned, precast concrete girder bridge over the Petaluma River. Work included designing elevated girder support structures and falsework.

Aurther Mill RR Spur Cross

East and West new precast girder bridges built offset and jacked laterally and vertically into final position after existing bridges were demolished (Slide In Bridge Construction method).

Alondra Blvd O.C.

412’ long, 100’ wide concrete box girder bridge over the I-5 freeway involving wide traffic openings and very minimal traffic clearances

Coyote Creek Alondra Bridge

136’ long, 100’ wide combined precast concrete girder and flat slab bridge. Work included earth shoring and bracing of existing channel walls and pier wall.

Coyote Creek I-5 Bridge

160’ long, 190’ wide combined precast concrete girder and flat slab bridge built in 3 stages. Work included earth shoring and bracing of existing channel walls and pier wall.

Austin Vaults

Earth shoring for installation of sand filter vaults

Pioneer Bluff Bridge

615' long, 80' wide concrete slab bridge requiring falsework footings on weak saturated soils and steel frames to support multiple columns

Del Paso Right Bridge

1265’ long concrete box bridge widening over 3 railroad lines, 2 roads and a light rail line. Span over light rail involved elevating structure during construction and lowering completed section into place

Del Paso Left Bridge

1340’ long concrete box bridge widening over 3 RR lines and 2 roads

Spanish Creek Bridge

627’ long, 160’ high box girder bridge supported by double concrete arches spanning 355' over Spanish Creek Canyon. Work also included temporary bridge and crane trestle.

Presidio Viaduct Left Bridge

1340’ long varying width box girder bridge, with unique steel fin overhang design, on approach to the Golden Gate Bridge, over culturally sensitive areas of the Presidio Park

Ruckman Ave UC Bridge

411’ long, varying width box girder bridge built in 2 stages, including temporary widening section

Galena Creek Bridge

Double 1722’ long, 300’ high, varying depth box girder bridges supported by concrete cathedral arches spanning 690’

Steamboat Hills Bridge

665’ long, 123’ wide, 125’ high box girder bridge

Galena Forest Bridge

918’ long, 123’ wide, 92’ high box girder bridge

Pleasant Valley Bridge

330’ long, 123’ wide, 66’ high box girder bridge

Mt. Rose Interchange Bridge

345’ long, 62’ wide, box girder bridge over multiple lanes of traffic

Bowers Mansion Bridge

310’ long, 74’ wide box girder bridge

West Tie In

Unique, geometrically challenging, combined slab and box girder bridge consisting of multiple bent caps and short spans to facilitate bypass into the Yerba Buena Tunnel

Viaduct Piers

Multiple columns and pier caps 150’+ in height to support double decker steel viaduct structure

YB4 Temp support

Steel structure to support YB4 section of the Bay Bridge during lowering and demolition

TBS trestles

2 Crane trestles in SF Bay to support off loading and construction of steel TBS viaduct structures

Eldorado Street O.C.

378’ long, 77’ wide concrete box girder bridge requiring a large traffic opening

French Camp Slough Bridge

154’ long, 135’ wide concrete box girder bridge. Design included driven timber pile supports and unique roll out system for falsework removal

UPRR Fresno Subdivision OH

431’ long, 77’ wide concrete box girder bridge over UPRR

UPRR Oakland Subdivision OH

415 long, 77’ wide concrete box girder bridge over UPRR

UPRR McHenry Industrial Lead OH

184’ long, 77’ wide concrete box girder bridge over UPRR

Golden Valley Bridge, Santa Clarita, CA

1080’ dual box girder bridges over river and flood plain

Route 4 French Camp, Stockton, CA

French Camp Slough - 229' slab bridge, French Camp Turnpike- 161' box girder bridge

Gene Autry Way, Anaheim, CA

335’ long, varying width (140’-233’) box girder bridge over a major active freeway

Bethel Island Bridge Replace, Contra Costa County, CA

Precast concrete girder bridge over water, requiring 2 crane trestles and open navigational channel