Here are the coordinates for the bridge (pick your preference):
32.705093* N 114.95728 W elevation 190.3'
-or-
32* 42.355' N 114* 57.436' W
-or-
32* 42' 21.34 N 114* 57' 26.20 W
These are just north and west of the bridge. There were 2 Border patrol Agents parked on the bridge, so I didn't stop on the middle to get the exact location. (You'll see what I mean on the map below)
TopoZone map