US Bridges

LA0432 over Amite River Relief

Fair

St. Helena Parish, Louisiana · 3.2 M NW of LA 38 · Structure no. 624608461000411

Built
1977
48 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
652 ft
3 main spans
Daily traffic
532
2021 count
Owner
State
State Highway Agency

About this bridge

LA0432 over Amite River Relief is a prestressed concrete continuous stringer/multi-beam or girder carrying LA0432 over Amite River Relief in St. Helena Parish, Louisiana. It was built in 1977, so it is 48 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 532 vehicles a day, roughly 13% of them trucks, projected to reach 585 by 2041. The structure is 652 ft (198.7 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesLA0432
CrossesAmite River Relief
Location3.2 M NW of LA 38
RouteState Highway 432
Coordinates30.94532, -90.8542
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
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78 US tons
Inventory rating47 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length652 ft (198.7 m)
Longest span250 ft (76.2 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic532 (2021)
Projected traffic585 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed9.9 mi (16 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 LA0432 over Amite River Relief built?

It was built in 1977, making it 48 years old in 2025.

What condition is LA0432 over Amite River Relief 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 LA0432 over Amite River Relief carry?

About 532 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0432 over Amite River Relief?

The structure is 652 ft (198.7 m) long with a longest span of 250 ft (76.2 m) and a deck 33 ft wide.

Who owns LA0432 over Amite River Relief?

It is owned by the State Highway Agency.