US Bridges

LA0037 over Amite River-Grangeville

Fair

St. Helena Parish, Louisiana · 0.4 M SW of LA 63 · Structure no. 624602540500001

Built
1981
44 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,142 ft
17 main spans
Daily traffic
3,362
2021 count
Owner
State
State Highway Agency

About this bridge

LA0037 over Amite River-Grangeville is a prestressed concrete continuous stringer/multi-beam or girder carrying LA0037 over Amite River-Grangeville in St. Helena Parish, Louisiana. It was built in 1981, so it is 44 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 3,362 vehicles a day, roughly 12% of them trucks, projected to reach 3,698 by 2041. The structure is 1,142 ft (348.1 m) long and 43 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesLA0037
CrossesAmite River-Grangeville
Location0.4 M SW of LA 63
RouteState Highway 37
CountySt. Helena Parish
StateLouisiana
Coordinates30.73494, -90.84423
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans17
Design loadHS 20
Structure length1,142 ft (348.1 m)
Longest span70 ft (21.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,362 (2021)
Projected traffic3,698 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 LA0037 over Amite River-Grangeville built?

It was built in 1981, making it 44 years old in 2025.

What condition is LA0037 over Amite River-Grangeville 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 October 2024.

How much traffic does LA0037 over Amite River-Grangeville carry?

About 3,362 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0037 over Amite River-Grangeville?

The structure is 1,142 ft (348.1 m) long with a longest span of 70 ft (21.3 m) and a deck 43 ft wide.

Who owns LA0037 over Amite River-Grangeville?

It is owned by the State Highway Agency.