Two 300 foot truss spans were added to the bridge on the West side of the river in 1938 to allow the cross section of the Atchafalaya River to be increased.
Bruce is correct. Bing Maps still shows Gremillion St. crossing on this bridge although the road deck has long since been removed. You can still see some of the pilings.
I've worked on this bridge and was on the turnspan part in operation. It is pretty neat to see something so old work like it does.
Is this the bridge built in 1928 jointly by the State of Louisiana and the L&A railroad that also carried LA Hwy 1 across the Atchafalaya? I have early childhood memories of driving across that bridge.