US Bridges

LA0015 over Red Bayou Canal

Fair

Concordia Parish, Louisiana · 13.69 MI North of LA 565 · Structure no. 581501770513691

Built
1961
64 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
393
2021 count
Owner
State
State Highway Agency

About this bridge

LA0015 over Red Bayou Canal is a concrete slab carrying LA0015 over Red Bayou Canal in Concordia Parish, Louisiana. It was built in 1961, so it is 64 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 393 vehicles a day, roughly 21% of them trucks, projected to reach 432 by 2041. The structure is 80 ft (24.4 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesLA0015
CrossesRed Bayou Canal
Location13.69 MI North of LA 565
RouteState Highway 15
Coordinates31.59079, -91.5572
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic393 (2021)
Projected traffic432 by 2041
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 LA0015 over Red Bayou Canal built?

It was built in 1961, making it 64 years old in 2025.

What condition is LA0015 over Red Bayou Canal 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 May 2024.

How much traffic does LA0015 over Red Bayou Canal carry?

About 393 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is LA0015 over Red Bayou Canal?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns LA0015 over Red Bayou Canal?

It is owned by the State Highway Agency.