US Bridges

LA0412 over Redwood Creek

Fair

East Feliciana Parish, Louisiana · LA0412 · Structure no. 611908191201911

Built
1958
67 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
200 ft
10 main spans
Daily traffic
1,710
2021 count
Owner
State
State Highway Agency

About this bridge

LA0412 over Redwood Creek is a concrete slab carrying LA0412 over Redwood Creek in East Feliciana Parish, Louisiana. It was built in 1958, so it is 67 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 1,710 vehicles a day, roughly 10% of them trucks, projected to reach 1,881 by 2041. The structure is 200 ft (61 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLA0412
CrossesRedwood Creek
LocationLA0412
RouteState Highway 412
Coordinates30.72914, -91.1157
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadH 15
Structure length200 ft (61 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,710 (2021)
Projected traffic1,881 by 2041
Trucks10%
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 LA0412 over Redwood Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is LA0412 over Redwood 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 October 2024.

How much traffic does LA0412 over Redwood Creek carry?

About 1,710 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0412 over Redwood Creek?

The structure is 200 ft (61 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0412 over Redwood Creek?

It is owned by the State Highway Agency.