US Bridges

LA0008 over Bayou Louis

Fair

Catahoula Parish, Louisiana · 2.34 M E of LA 922 · Structure no. 581300390403531

Built
1989
36 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
590 ft
6 main spans
Daily traffic
1,394
2021 count
Owner
State
State Highway Agency

About this bridge

LA0008 over Bayou Louis is a prestressed concrete continuous stringer/multi-beam or girder carrying LA0008 over Bayou Louis in Catahoula Parish, Louisiana. It was built in 1989, so it is 36 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 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 1,394 vehicles a day, roughly 21% of them trucks, projected to reach 1,533 by 2041. The structure is 590 ft (179.8 m) long and 47 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesLA0008
CrossesBayou Louis
Location2.34 M E of LA 922
RouteState Highway 8
CountyCatahoula Parish
StateLouisiana
Coordinates31.78262, -91.7748
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.
Superstructure8 Very GoodNo problems noted.
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
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length590 ft (179.8 m)
Longest span100 ft (30.5 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,394 (2021)
Projected traffic1,533 by 2041
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0008 over Bayou Louis built?

It was built in 1989, making it 36 years old in 2025.

What condition is LA0008 over Bayou Louis 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 LA0008 over Bayou Louis carry?

About 1,394 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is LA0008 over Bayou Louis?

The structure is 590 ft (179.8 m) long with a longest span of 100 ft (30.5 m) and a deck 47 ft wide.

Who owns LA0008 over Bayou Louis?

It is owned by the State Highway Agency.