US Bridges

Dupree RD over Coushatta Bayou Trib.

Fair

Red River Parish, Louisiana · 0.6 Mi. West of US 71 · Structure no. 044132047932321

Built
1986
39 years old
Condition
Fair
inspected September 2023
Type
Culvert
Steel
Length
22 ft
3 main spans
Daily traffic
32
2020 count
Owner
County
County Highway Agency

About this bridge

Dupree RD over Coushatta Bayou Trib. is a steel culvert carrying Dupree RD over Coushatta Bayou Trib. in Red River Parish, Louisiana. It was built in 1986, so it is 39 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 32 vehicles a day, projected to reach 35 by 2040. The structure is 22 ft (6.7 m) long and 45 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesDupree RD
CrossesCoushatta Bayou Trib.
Location0.6 Mi. West of US 71
RouteCounty Highway 0
CountyRed River Parish
StateLouisiana
Coordinates32.07892, -93.38625
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span6 ft (1.8 m)
Deck width45 ft (13.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2020)
Projected traffic35 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Dupree RD over Coushatta Bayou Trib. built?

It was built in 1986, making it 39 years old in 2025.

What condition is Dupree RD over Coushatta Bayou Trib. 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 2023.

How much traffic does Dupree RD over Coushatta Bayou Trib. carry?

About 32 vehicles per day (2020 count).

How long is Dupree RD over Coushatta Bayou Trib.?

The structure is 22 ft (6.7 m) long with a longest span of 6 ft (1.8 m) and a deck 45 ft wide.

Who owns Dupree RD over Coushatta Bayou Trib.?

It is owned by the County Highway Agency.