Rating:
No votes cast

Old Pass Manchac Bridge (1957)

Photos 

Photo taken in October 2007

Enlarge

BH Photo #255026

Map 

Street View 

Description 

Built in 1957 as part of the complete reconstruction of US 51 between Frenier and Ponchatoula. Replaced the original 1926 Pass Manchac draw bridge immediately to the east, which remained in use as a fishing pier until it burned in 1969. Served as US 51 until being bypassed by the four-lane I-55 span (co-signed as US 51) in 1979. 1976 rehabilitation followed a tugboat hit that occurred during (but was unrelated to) the construction of I-55.

Facts 

Overview
Steel stringer bridge over Pass Manchac on Old US 51
Location
Tangipahoa Parish, Louisiana, and St. John the Baptist Parish, Louisiana
Status
Open to traffic
History
Built 1957; rehabilitated 1976
Design
Steel stringer
Dimensions
Length of largest span: 285.1 ft.
Total length: 3,012.3 ft. (0.6 mi.)
Deck width: 27.9 ft.
Approximate latitude, longitude
+30.28553, -90.40111   (decimal degrees)
30°17'08" N, 90°24'04" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/749978/3353285 (zone/easting/northing)
Quadrangle map:
Manchac
Average daily traffic (as of 2016)
2,400
Inventory number
BH 56421 (Bridgehunter.com ID)
Inspection report (as of December 2018)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 37.3 (out of 100)
View more at BridgeReports.com

Update Log 

  • February 29, 2020: Updated by Roger Collins: Moved long text from history field to description box and expanded w/add'l info.
  • September 28, 2013: New photos from M. D. Caillet
  • May 31, 2013: Updated by M. D. Caillet: Added categories "US 51", "Bypassed"

Related Bridges 

Comments 

Old Pass Manchac Bridge
Posted July 21, 2019, by Geoffrey Falcon (geofffalcon [at] yahoo [dot] com)

the 1976 rehab was due to a deadly barge strike on one of the the main piers.. Repairs were completed in less than three months