US Bridges

LA0435 over Abita River

Fair

St. Tammany Parish, Louisiana · LA 435 @ Logmi 0.77 · Structure no. 625202810400771

Built
1983
42 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
172 ft
9 main spans
Daily traffic
4,200
2021 count
Owner
State
State Highway Agency

About this bridge

LA0435 over Abita River is a concrete slab carrying LA0435 over Abita River in St. Tammany Parish, Louisiana. It was built in 1983, so it is 42 years old, younger 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 4,200 vehicles a day, roughly 12% of them trucks, projected to reach 4,620 by 2041. The structure is 172 ft (52.4 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesLA0435
CrossesAbita River
LocationLA 435 @ Logmi 0.77
RouteState Highway 435
CountySt. Tammany Parish
StateLouisiana
Coordinates30.48193, -90.0268
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans9
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2021)
Projected traffic4,620 by 2041
Trucks12%
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 LA0435 over Abita River built?

It was built in 1983, making it 42 years old in 2025.

What condition is LA0435 over Abita 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 October 2023.

How much traffic does LA0435 over Abita River carry?

About 4,200 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0435 over Abita River?

The structure is 172 ft (52.4 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns LA0435 over Abita River?

It is owned by the State Highway Agency.