Keywords: San Joaquin River Viaduct aerial 2016.jpg 's San Joaquin River Viaduct over the San Joaquin River in a early stage of construction in November 2016 A temporary platform has been erected to aid in construction of the viaduct The existing Union Pacific Railroad and California State Route 99 bridges are also visible 2016-11-14 11 12 17 https //www hsr ca gov/buildhsr/san_joaquin_river_viaduct html California Hgih-Speed Rail Authority other versions 36 843876 -119 931921 Custom license marker 2016 12 13 PD-CAGov California High-Speed Rail Railway bridges in California Bridge construction in the United States Aerial photographs of bridges in the United States California State Route 99 Union Pacific Railroad bridges |