US Bridges

LA0565 over Bayou Cocodrie

Fair

Concordia Parish, Louisiana · 6.09 MI East of LA 129 · Structure no. 581508151706091

Built
1973
52 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
300 ft
6 main spans
Daily traffic
801
2021 count
Owner
State
State Highway Agency

About this bridge

LA0565 over Bayou Cocodrie is a prestressed concrete stringer/multi-beam or girder carrying LA0565 over Bayou Cocodrie in Concordia 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 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 801 vehicles a day, roughly 21% of them trucks, projected to reach 881 by 2041. The structure is 300 ft (91.4 m) long and 30 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesLA0565
CrossesBayou Cocodrie
Location6.09 MI East of LA 129
RouteState Highway 565
CountyConcordia Parish
StateLouisiana
Coordinates31.43035, -91.6188
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length300 ft (91.4 m)
Longest span50 ft (15.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic801 (2021)
Projected traffic881 by 2041
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 LA0565 over Bayou Cocodrie built?

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

What condition is LA0565 over Bayou Cocodrie 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 LA0565 over Bayou Cocodrie carry?

About 801 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is LA0565 over Bayou Cocodrie?

The structure is 300 ft (91.4 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.

Who owns LA0565 over Bayou Cocodrie?

It is owned by the State Highway Agency.