US Bridges

LA0348 over Big Cane Relief

Fair

Union Parish, Louisiana · 5.7 MI East of LA 549 · Structure no. 055603133005771

Built
1973
52 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
314
2021 count
Owner
State
State Highway Agency

About this bridge

LA0348 over Big Cane Relief is a concrete slab carrying LA0348 over Big Cane Relief in Union Parish, Louisiana. It was built in 1973, so it is 52 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 5 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 314 vehicles a day, roughly 19% of them trucks, projected to reach 345 by 2041. The structure is 57 ft (17.4 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesLA0348
CrossesBig Cane Relief
Location5.7 MI East of LA 549
RouteState Highway 348
Coordinates32.87647, -92.305
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic314 (2021)
Projected traffic345 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 LA0348 over Big Cane Relief built?

It was built in 1973, making it 52 years old in 2025.

What condition is LA0348 over Big Cane 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 February 2024.

How much traffic does LA0348 over Big Cane Relief carry?

About 314 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0348 over Big Cane Relief?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA0348 over Big Cane Relief?

It is owned by the State Highway Agency.