US Bridges

LA3071 over Rocky Creek

Fair

La Salle Parish, Louisiana · 2.9 MI East of LA 503 · Structure no. 583008301602911

Built
1979
46 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
429
2021 count
Owner
State
State Highway Agency

About this bridge

LA3071 over Rocky Creek is a concrete slab carrying LA3071 over Rocky Creek in La Salle Parish, Louisiana. It was built in 1979, so it is 46 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 429 vehicles a day, roughly 11% of them trucks, projected to reach 471 by 2041. The structure is 76 ft (23.2 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLA3071
CrossesRocky Creek
Location2.9 MI East of LA 503
RouteState Highway 3071
Coordinates31.78418, -92.0257
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic429 (2021)
Projected traffic471 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA3071 over Rocky Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is LA3071 over Rocky Creek 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 January 2024.

How much traffic does LA3071 over Rocky Creek carry?

About 429 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA3071 over Rocky Creek?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 32 ft wide.

Who owns LA3071 over Rocky Creek?

It is owned by the State Highway Agency.