build HSR California

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.


After installing metal deck panels and rebar on the section of the viaduct crossing over the San Joaquin River, crews began pouring concrete to form the final section of the San Joaquin River Viaduct. Once the deck concrete has cured, work will begin on the signature arches that will serve as the “gateway” to Fresno County. Falsework will be constructed and then the forming of the arch will take place. The completed viaduct, nearly a mile in length, will be one of the largest structures on this first phase of the high-speed rail project.

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