US Bridges

LA0036 over Abita River

PoorPosted for load

St. Tammany Parish, Louisiana · 0.1 M E of LA 59 · Structure no. 625202800102751

Built
1957
68 years old
Condition
Poor
inspected February 2024
Type
Slab
Concrete
Length
133 ft
7 main spans
Daily traffic
1,844
2021 count
Owner
State
State Highway Agency

About this bridge

LA0036 over Abita River is a concrete slab carrying LA0036 over Abita River in St. Tammany Parish, Louisiana. It was built in 1957, so it is 68 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,844 vehicles a day, roughly 8% of them trucks, projected to reach 2,028 by 2041. The structure is 133 ft (40.5 m) long and 31 ft wide.

CarriesLA0036
CrossesAbita River
Location0.1 M E of LA 59
RouteState Highway 36
Coordinates30.48163, -90.0395
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,844 (2021)
Projected traffic2,028 by 2041
Trucks8%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$634,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0036 over Abita River built?

It was built in 1957, making it 68 years old in 2025.

What condition is LA0036 over Abita River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does LA0036 over Abita River carry?

About 1,844 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is LA0036 over Abita River?

The structure is 133 ft (40.5 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA0036 over Abita River?

It is owned by the State Highway Agency.