US Bridges

US0371 over Tanyard Creek

Fair

Webster Parish, Louisiana · .2 MI South of LA 531 · Structure no. 046000270302261

Built
1935
90 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
40 ft
6 main spans
Daily traffic
4,174
2021 count
Owner
State
State Highway Agency

About this bridge

US0371 over Tanyard Creek is a concrete culvert carrying US0371 over Tanyard Creek in Webster Parish, Louisiana. It was built in 1935, so it is 90 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 4,174 vehicles a day, roughly 26% of them trucks, projected to reach 4,591 by 2041. The structure is 40 ft (12.2 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesUS0371
CrossesTanyard Creek
Location.2 MI South of LA 531
RouteU.S. Route 371
Coordinates32.4428, -93.2809
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
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 rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadH 15
Structure length40 ft (12.2 m)
Longest span6 ft (1.8 m)
Deck width36 ft (11 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,174 (2021)
Projected traffic4,591 by 2041
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US0371 over Tanyard Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is US0371 over Tanyard Creek 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 September 2024.

How much traffic does US0371 over Tanyard Creek carry?

About 4,174 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is US0371 over Tanyard Creek?

The structure is 40 ft (12.2 m) long with a longest span of 6 ft (1.8 m) and a deck 36 ft wide.

Who owns US0371 over Tanyard Creek?

It is owned by the State Highway Agency.