US Bridges

Tupper Road over W Grand Marais Bayou

Fair

Jefferson Davis Parish, Louisiana · 2.2 Mi. W. of LA 26 · Structure no. 072730241924241

Built
2003
22 years old
Condition
Fair
inspected July 2024
Type
Culvert
Steel
Length
26 ft
3 main spans
Daily traffic
60
2019 count
Owner
County
County Highway Agency

About this bridge

Tupper Road over W Grand Marais Bayou is a steel culvert carrying Tupper Road over W Grand Marais Bayou in Jefferson Davis Parish, Louisiana. It was built in 2003, so it is 22 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 60 vehicles a day, projected to reach 66 by 2039. The structure is 26 ft (7.9 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTupper Road
CrossesW Grand Marais Bayou
Location2.2 Mi. W. of LA 26
RouteCounty Highway 0
CountyJefferson Davis Parish
StateLouisiana
Coordinates30.40182, -92.7076
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width33 ft (10.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2019)
Projected traffic66 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Tupper Road over W Grand Marais Bayou built?

It was built in 2003, making it 22 years old in 2025.

What condition is Tupper Road over W 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 Tupper Road over W Grand Marais Bayou carry?

About 60 vehicles per day (2019 count).

How long is Tupper Road over W Grand Marais Bayou?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 33 ft wide.

Who owns Tupper Road over W Grand Marais Bayou?

It is owned by the County Highway Agency.