US Bridges

LA0437 over Bogue Chitto River

Fair

Washington Parish, Louisiana · LA0437 · Structure no. 625902790300191

Built
1970
55 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,992 ft
1 main span
Daily traffic
2,058
2021 count
Owner
State
State Highway Agency

About this bridge

LA0437 over Bogue Chitto River is a steel stringer/multi-beam or girder carrying LA0437 over Bogue Chitto River in Washington Parish, Louisiana. It was built in 1970, so it is 55 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,058 vehicles a day, roughly 12% of them trucks, projected to reach 2,263 by 2041. The structure is 1,992 ft (607.2 m) long and 30 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesLA0437
CrossesBogue Chitto River
LocationLA0437
RouteState Highway 437
CountyWashington Parish
StateLouisiana
Coordinates30.71609, -90.0844
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+33 approach)
Design loadHS 20
Structure length1,992 ft (607.2 m)
Longest span175 ft (53.3 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,058 (2021)
Projected traffic2,263 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$7.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0437 over Bogue Chitto River built?

It was built in 1970, making it 55 years old in 2025.

What condition is LA0437 over Bogue Chitto River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does LA0437 over Bogue Chitto River carry?

About 2,058 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0437 over Bogue Chitto River?

The structure is 1,992 ft (607.2 m) long with a longest span of 175 ft (53.3 m) and a deck 30 ft wide.

Who owns LA0437 over Bogue Chitto River?

It is owned by the State Highway Agency.