US Bridges

LA0450 over Tchefuncta River

FairPosted for load

Washington Parish, Louisiana · 1.7 M S of LA 10 · Structure no. 625908590402601

Built
1943
82 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
77 ft
4 main spans
Daily traffic
1,162
2021 count
Owner
State
State Highway Agency

About this bridge

LA0450 over Tchefuncta River is a wood or timber stringer/multi-beam or girder carrying LA0450 over Tchefuncta River in Washington Parish, Louisiana. It was built in 1943, so it is 82 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,162 vehicles a day, roughly 13% of them trucks, projected to reach 1,278 by 2041. The structure is 77 ft (23.5 m) long and 26 ft wide.

CarriesLA0450
CrossesTchefuncta River
Location1.7 M S of LA 10
RouteState Highway 450
Coordinates30.79181, -90.2721
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating27 US tons
Inventory rating18 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 10
Structure length77 ft (23.5 m)
Longest span19 ft (5.8 m)
Deck width26 ft (8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,162 (2021)
Projected traffic1,278 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0450 over Tchefuncta River built?

It was built in 1943, making it 82 years old in 2025.

What condition is LA0450 over Tchefuncta 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 May 2024.

How much traffic does LA0450 over Tchefuncta River carry?

About 1,162 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0450 over Tchefuncta River?

The structure is 77 ft (23.5 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns LA0450 over Tchefuncta River?

It is owned by the State Highway Agency.