US Bridges

LA0442 over Nat. River Relief

FairPosted for load

Tangipahoa Parish, Louisiana · LA0442 · Structure no. 625302690402801

Built
1963
62 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
160 ft
8 main spans
Daily traffic
5,026
2021 count
Owner
State
State Highway Agency

About this bridge

LA0442 over Nat. River Relief is a concrete slab carrying LA0442 over Nat. River Relief in Tangipahoa Parish, Louisiana. It was built in 1963, so it is 62 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. Its operating status is: posted for load restriction.

It carries about 5,026 vehicles a day, roughly 9% of them trucks, projected to reach 5,528 by 2041. The structure is 160 ft (48.8 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLA0442
CrossesNat. River Relief
LocationLA0442
RouteState Highway 442
CountyTangipahoa Parish
StateLouisiana
Coordinates30.57715, -90.5202
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating19.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadH 15
Structure length160 ft (48.8 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,026 (2021)
Projected traffic5,528 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$741,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0442 over Nat. River Relief built?

It was built in 1963, making it 62 years old in 2025.

What condition is LA0442 over Nat. 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 April 2023.

How much traffic does LA0442 over Nat. River Relief carry?

About 5,026 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA0442 over Nat. River Relief?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA0442 over Nat. River Relief?

It is owned by the State Highway Agency.