US Bridges

LA0368 over Irrigation Canal

Good

Acadia Parish, Louisiana · 3.8 MI East of LA 91 · Structure no. 030102113103881

Built
1954
71 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
27 ft
4 main spans
Daily traffic
598
2021 count
Owner
State
State Highway Agency

About this bridge

LA0368 over Irrigation Canal is a concrete culvert carrying LA0368 over Irrigation Canal in Acadia Parish, Louisiana. It was built in 1954, so it is 71 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 598 vehicles a day, roughly 12% of them trucks, projected to reach 657 by 2041. The structure is 27 ft (8.2 m) long and 40 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesLA0368
CrossesIrrigation Canal
Location3.8 MI East of LA 91
RouteState Highway 368
CountyAcadia Parish
StateLouisiana
Coordinates30.41491, -92.564
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating30 US tons
Inventory rating23.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length27 ft (8.2 m)
Longest span5 ft (1.5 m)
Deck width40 ft (12.1 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic598 (2021)
Projected traffic657 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$183,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0368 over Irrigation Canal built?

It was built in 1954, making it 71 years old in 2025.

What condition is LA0368 over Irrigation Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does LA0368 over Irrigation Canal carry?

About 598 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0368 over Irrigation Canal?

The structure is 27 ft (8.2 m) long with a longest span of 5 ft (1.5 m) and a deck 40 ft wide.

Who owns LA0368 over Irrigation Canal?

It is owned by the State Highway Agency.