This was never a Union Pacific bridge. It was originally an AT&SF (Santa Fe) bridge on their line between Stockton and Richmond, CA. The AT&SF became a part on the BNSF which now owns and operates the line. It is one of three Abt Bascule bridges on this line across the Delta.
San Joaquin River RR Bridge
Posted December 28, 2011, by Craig Philpott (cphilpott [at] puc [dot] edu)
You are correct, this is a BNSF line now, in the past and noted on many maps this is listed as Union Pacific line.
San Joaquin River RR Bridge
Posted December 28, 2011, by Nathan Holth
Is this really a UP line? The American Bridge website lists this as a BNSF bridge.
This was never a Union Pacific bridge. It was originally an AT&SF (Santa Fe) bridge on their line between Stockton and Richmond, CA. The AT&SF became a part on the BNSF which now owns and operates the line. It is one of three Abt Bascule bridges on this line across the Delta.