US Bridges

LA0010 over W Fork Thompson C

Fair

West Feliciana Parish, Louisiana · 10.44 MI E of US 61 · Structure no. 616300610413111

Built
1959
66 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
422 ft
7 main spans
Daily traffic
2,392
2021 count
Owner
State
State Highway Agency

About this bridge

LA0010 over W Fork Thompson C is a steel stringer/multi-beam or girder carrying LA0010 over W Fork Thompson C in West Feliciana Parish, Louisiana. It was built in 1959, so it is 66 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.

It carries about 2,392 vehicles a day, roughly 18% of them trucks, projected to reach 2,631 by 2041. The structure is 422 ft (128.6 m) long and 33 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesLA0010
CrossesW Fork Thompson C
Location10.44 MI E of US 61
RouteState Highway 10
CountyWest Feliciana Parish
StateLouisiana
Coordinates30.83944, -91.23356
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating24.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length422 ft (128.6 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,392 (2021)
Projected traffic2,631 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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$1.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0010 over W Fork Thompson C built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0010 over W Fork Thompson C 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 August 2024.

How much traffic does LA0010 over W Fork Thompson C carry?

About 2,392 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is LA0010 over W Fork Thompson C?

The structure is 422 ft (128.6 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns LA0010 over W Fork Thompson C?

It is owned by the State Highway Agency.