US Bridges

Ardoin Road over Bayou Grand Marais

FairPosted for load

Jefferson Davis Parish, Louisiana · 1.6 MI W of Int LA 26 · Structure no. 072730201924171

Built
1965
60 years old, rebuilt 2013
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
50
2019 count
Owner
County
County Highway Agency

About this bridge

Ardoin Road over Bayou Grand Marais is a concrete slab carrying Ardoin Road over Bayou Grand Marais in Jefferson Davis Parish, Louisiana. It was built in 1965 and reconstructed in 2013, so it is 60 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 55 by 2039. The structure is 57 ft (17.4 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesArdoin Road
CrossesBayou Grand Marais
Location1.6 MI W of Int LA 26
RouteCounty Highway 0
CountyJefferson Davis Parish
StateLouisiana
Coordinates30.33531, -92.69683
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
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2019)
Projected traffic55 by 2039
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$217,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ardoin Road over Bayou Grand Marais built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2013.

What condition is Ardoin Road over Bayou Grand Marais 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 September 2024.

How much traffic does Ardoin Road over Bayou Grand Marais carry?

About 50 vehicles per day (2019 count).

How long is Ardoin Road over Bayou Grand Marais?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 18 ft wide.

Who owns Ardoin Road over Bayou Grand Marais?

It is owned by the County Highway Agency.