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SR-118/First Street & SR-118/Erringer Road Interchange Improvements

Simi Valley, CA

Client: Forest City Construction

 

SR-118/First Street/Erringer Road

 

Forest City Development was required to improve two interchanges prior to the opening of the brand new 600,000 square-foot Simi Town Center Mall. Civil Works Engineers was hired after it was determined another engineering firm could not deliver the construction documents in time for the mall opening in October 2005. As such, the design was on an extremely fast-track schedule. 

The City of Simi Valley project included preliminary and final engineering improvements to the:
   SR-118/First Street Interchange
   SR-118/Erringer Road Interchange

Although the collective construction cost was $3.2 million, Caltrans Permits agreed to an encroachment permit process; one permit for each project.

Mitigation measures to the interchanges included:
   widening the WB off-ramps at the terminus
   realigning the WB loop on-ramps due to WB off-ramp widening
   widening the streets between the EB and WB ramps
   removing the median on the First overcrossing
   signal modifications at the WB and EB ramps intersection at First 
      and WB ramps at Erringer
   new signal at EB ramps at Erringer

Project involved coordination with Caltrans District 7 (downtown and the local Ventura office) and the City of Simi Valley. Sliver right of way acquisition was required. We also prepared Fact Sheets, PEERs, 
Storm Water Data Reports, hydrology studies and reports, geotechnical investigation, ISA, lighting modifications, and ramp metering modifications.

 

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