Pedelta participated in the bridge design of the CP1 of HSR in California. The CP1 construction length is a 29-mile segment between Madera County to Fresno County, which resulted in a bid value of $ 1.08 billion.
Pedelta services were provided during June-November 2012 and included the coordination and review of the bridge’s structural design, the compliance analysis of RFP and Design Criteria, the development of alternative technical concepts and optimizations, construction methods, detailed take-off for the structures, and estimate of quantities, amongst others.
The main three viaducts consisted of concrete box girders with typical spans having a length of 110 ft, while the major spans consisted of steel trusses spanning up to 330 ft. In one of the viaducts we adopted a straddle bent type of solution as a result of a very skewed cross over the Union Pacific Railway Line. On the secondary railway and roadway bridges (over 40 structures), most of the spans consisted of precast P.C. girders.
For each structure, we did the concept design through the analysis of various bridge alternatives (structural types, materials and span layout). We also performed an in depth seismic analysis centered on the main viaducts along with the track-structure interaction analysis. As a result, we were able to identify the most suitable and cost effective configuration of the structure.
This design-build project was the first construction package of the 800-mile HSR line between Sacramento and San Diego. The train travel speed is 220 MPH, allowing a 2 h 40’ trip from San Francisco to Los Angeles.
The innovations provided by Pedelta contributed to the reduction of the anticipated bidding value of the structure by up to 40%.