US Bridges

Grand Marais Road over Grand Marais Bayou

Fair

Jefferson Davis Parish, Louisiana · 1.7 MI E of LA 395 · Structure no. 072730183924291

Built
1999
26 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
114 ft
6 main spans
Daily traffic
400
2019 count
Owner
County
County Highway Agency

About this bridge

Grand Marais Road over Grand Marais Bayou is a concrete slab carrying Grand Marais Road over Grand Marais Bayou in Jefferson Davis Parish, Louisiana. It was built in 1999, so it is 26 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 400 vehicles a day, projected to reach 440 by 2039. The structure is 114 ft (34.7 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGrand Marais Road
CrossesGrand Marais Bayou
Location1.7 MI E of LA 395
RouteCounty Highway 0
CountyJefferson Davis Parish
StateLouisiana
Coordinates30.30558, -92.7129
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length114 ft (34.7 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2019)
Projected traffic440 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Grand Marais Road over Grand Marais Bayou built?

It was built in 1999, making it 26 years old in 2025.

What condition is Grand Marais Road over Grand Marais 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 July 2024.

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

About 400 vehicles per day (2019 count).

How long is Grand Marais Road over Grand Marais Bayou?

The structure is 114 ft (34.7 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Grand Marais Road over Grand Marais Bayou?

It is owned by the County Highway Agency.