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San Joaquin River Viaduct & Pergola


The San Joaquin River Viaduct is an approximately 4,700-foot structure that will span the San Joaquin River in north Fresno and the Union Pacific tracks parallel to State Route 99. It will feature arches representing the northern gateway into Fresno, and a pergola structure to allow high speed trains to cross over the top of the Union Pacific tracks.


In north Fresno, parallel to SR 99 from the San Joaquin River to approximately Herndon Avenue.


The completed signature arches of the San Joaquin River Viaduct straddle the Fresno and Madera county line and represent the northern gateway into the Central Valley. With the superstructure now complete, crews are putting the final touches on the largest structure in Construction Package 1.

The San Joaquin River Viaduct and Pergola structure spans approximately 4,741-feet long collectively, with the top of the viaduct spanning 43-feet wide. The 210-foot arch span over the San Joaquin River is supported by 20 pre-cast floor beams. Technically, the cast-in-place arches act as suspension bridge support for the bridge deck.

Further south of the San Joaquin River, a large pergola structure was built to allow high-speed trains to cross over the Union Pacific Railroad. A total of 198 girders form the foundation of the lid of the pergola structure. Each girder weighs 156,000 lbs. and is 121-feet long.

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