Sacramento Railyards Bridges & Roadway Infrastructure

Blackburn Consulting completed geotechnical reports for four bridge structures and new roads critical to initial redevelopment of the 240-acre Sacramento Railyards site, one of the largest urban infill projects in the nation. The highly compressed design and construction schedule was complicated by coordination with a simultaneous UPRR track relocation project, significant funding issues and several geotechnical challenges. Key geotechnical issues included: deep compressible and liquefiable soil deposits, resulting high static/seismic pile downdrag loads, inconsistent upper gravel/sand bearing stratum with potential pile punching/hard pile driving issues, difficult subsurface exploration conditions (environmental cleanup site with specialized drilling protocol), and the need to protect historic buildings from construction vibrations. We met the challenges by completing a pile test program during design, using surcharges to eliminate static downdrag issues, recommending lightweight cellular concrete for MSE wall backfill, and recommending a pile setup factor for use during bridge construction to confirm high pile load demands. 

Winner of CalGeo’s 2011 Outstanding Project Award

Location Sacramento, CA
Agency/Owner IA Sacramento Holdings
Timeframe 2009 to Present