7 votes

Long-Allen Bridge


Atchafalaya River Old U.S. 90 Bridge

Photo taken by C Hanchey in August 2009


BH Photo #144393


Street Views 


Opened to traffic on December 20, 1933; replaced the Morgan City-Berwick ferry which existed to the south near Railroad Avenue.


Through truss bridge over Atchafalaya River on LA 182 (old US 90) between Berwick and Morgan City
Berwick, St. Mary Parish, Louisiana
Open to traffic
Built 1933 by the Mt. Vernon Bridge Co.
- Mt. Vernon Bridge Co. of Mt. Vernon, Ohio
K-Parker through truss
Length of largest span: 607.7 ft.
Total length: 3,745.1 ft. (0.7 mi.)
Deck width: 23.9 ft.
Vertical clearance above deck: 14.0 ft.
Also called
Atchafalaya River Old U.S. 90 Bridge
Atchafalaya River LA 182 Bridge
Approximate latitude, longitude
+29.69674, -91.21420   (decimal degrees)
29°41'48" N, 91°12'51" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/672771/3286516 (zone/easting/northing)
Quadrangle map:
Morgan City
Average daily traffic (as of 2015)
Inventory number
BH 19118 (Bridgehunter.com ID)
Inspection report (as of April 2017)
Overall condition: Poor
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Serious (3 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 4 (out of 100)
View more at BridgeReports.com

Update Log 

  • November 8, 2021: New photo from Geoff Hubbs
  • May 14, 2021: New photo from Brian R. Warren
  • February 24, 2018: New photos from Cliff Darby
  • April 28, 2017: Updated by Roger Collins: Added description.
  • March 9, 2016: New photos from M. D. Caillet
  • February 23, 2015: Photo imported by Dave King
  • May 3, 2010: New Street View added by Nathan Holth
  • March 26, 2010: New photos from David Backlin
  • August 6, 2009: Updated by C Hanchey: Added Bridge Builder

Related Bridges 



Long-Allen Bridge
Posted July 6, 2021, by Brad Smith (gaberdine [at] hotmail [dot] com)

There is a plan for a $16M maintenance project on this bridge. Finding the funding may be an issue. The positive is demolition probably would cost more.

This was originally posted three years ago or so.

Long-Allen Bridge
Posted July 12, 2020, by Brad Smith (gaberdine [at] hotmail [dot] com)

Pictures do this bridge injustice. First the size: This bridge is massive. In the pictures, it looks kind of delicate. It is really tall and the beams and support panels are rugged. This 85+ year old bridge is in seemingly better shape than the 45-year old replacement the E.J. Lionel Grizzaffi Bridge which is just downstream.

The height of the superstructure is far taller than the pictures would give the impression. This bridge is HUGE. The narowness make is seem smaller (as a note it has 12 foot lanes and a separated sidewalk. Actually fairly wide for its time. )

On-site this bridge DWARFS the E.J. Lionel Grizzaffi Bridge just downstream of it.

Long-Allen Bridge
Posted October 20, 2018, by Robert Elder (robertelder1 [at] gmail [dot] com)

I drove over this massively huge bridge while seeking shelter from a storm today. All I can say is wow, just wow!

Long-Allen Bridge
Posted December 22, 2014, by Kristen Hanson (kriseh86 [at] gmail [dot] com)

Absolutely fell in love with this bridge. Any history that can be told please share :)