Manchac, Louisiana

IC - Manchac Pass Bridge (Old) (Tangipahoa Parish, Louisiana)
Replaced 1971
Lost Pony/through girder bridge over Manchac Pass on Illinois Central RR
Replaced by a new bridge

IC/CN - Manchac Pass Bridge (Tangipahoa Parish, Louisiana)
Built 1971
Through truss bridge over Manchac Pass on Illinois Central/ Canadian National RR
Open to traffic

Old Pass Manchac Bridge (Tangipahoa Parish, Louisiana)
This bridge was built in 1957 originally carrying US Highway 51 across Pass Manchac, replacing a timber bridge with steel draw span that opened in 1927. Rehabilitated in 1976. In 1979, Interstate 55 was completed and US-51 was co-signed with I-55.
Steel stringer bridge over Pass Manchac on Old US 51
Open to traffic