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1st Red River Moncla Bridge



Lost Bridge over Red River
Avoyelles Parish, Louisiana
Destroyed by flooding
Built 1934, destroyed by flood in 1945
Approximate latitude, longitude
+31.21130, -92.12520   (decimal degrees)
31°12'41" N, 92°07'31" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/583330/3453349 (zone/easting/northing)
Quadrangle map:
Marksville North
Land survey
T. 3 N., R. 3 E., Sec. 29
65 ft. above sea level
Inventory number
BH 71782 (Bridgehunter.com ID)


Avoyelles Parish, Louisiana (11)
Built 1934 (735)
Built during 1930s (10,988)
Destroyed by flood (396)
Lost (21,040)
Lost 1945 (15)
Lost during 1940s (313)
Louisiana (670)
Movable (2,812)
Swing (1,346)

Update Log 

  • May 8, 2018: Updated by Cliff Darby: Bridge was destroyed by flooding
  • April 10, 2016: Added by Joshua Bonnette


  • Joshua Bonnette
  • Cliff Darby - clif30 [at] hotmail [dot] com


1st Red River Moncla Bridge
Posted May 21, 2019, by David Oliver (squaredave [at] aol [dot] com)

Although I was very very young at the time, I distinctly remember being with my folks crossing on the ferry. I only remember the crossings in one direction - never toward Effie even though we obviously did go that way.

I also distinctly remember the words used by my dad when his 1940 Ford died going up the ramp on the Moncla side.

1st Red River Moncla Bridge
Posted April 21, 2018, by James Rhed

Newspaper reports state that two 40 foot spans collapsed on April 11th, 1945 due to floodwaters. These were on the Moncla side of the river as you approached the steel swing span. The bridge was never repaired. A ferry was used to cross until a newer bridge was built up river.

1st Red River Moncla Bridge
Posted April 2, 2018, by Jeff Dubea

Did the first bridge fail, or was it replaced by the Long-Allen bridge that we used up until the 90s? I'd like to know more about this bridge.

1st Red River Moncla Bridge
Posted December 3, 2017, by James Rhed

Here is a modified satellite image that shows the most likely original highway/bridge alignment based on 1940s Parish and USGS maps. Concrete slabs and approaches are in red. The black lines represent the location of the steel bridge spans. The river was much narrower and approached the bridge at about 90 degrees when it was built between 1931 and 1934. The pier for the swing span still exists as well as a small concrete approach opposite the Moncla side of the river.