US Bridges

LA0566 over Caney Bayou

Fair

Concordia Parish, Louisiana · 0.17 M N of US 84 · Structure no. 581503550200171

Built
1985
40 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
74
2021 count
Owner
State
State Highway Agency

About this bridge

LA0566 over Caney Bayou is a concrete slab carrying LA0566 over Caney Bayou in Concordia Parish, Louisiana. It was built in 1985, so it is 40 years old, younger 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 74 vehicles a day, roughly 11% of them trucks, projected to reach 81 by 2041. The structure is 76 ft (23.2 m) long and 35 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesLA0566
CrossesCaney Bayou
Location0.17 M N of US 84
RouteState Highway 566
CountyConcordia Parish
StateLouisiana
Coordinates31.61193, -91.6664
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable 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 spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74 (2021)
Projected traffic81 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 LA0566 over Caney Bayou built?

It was built in 1985, making it 40 years old in 2025.

What condition is LA0566 over Caney Bayou 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 August 2023.

How much traffic does LA0566 over Caney Bayou carry?

About 74 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0566 over Caney Bayou?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns LA0566 over Caney Bayou?

It is owned by the State Highway Agency.