US Bridges

Contour ST over Contraband Bayou

Fair

Calcasieu Parish, Louisiana · 0.09 MI W of LA 385 · Structure no. 071030102931231

Built
1970
55 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
2,440
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Contour ST over Contraband Bayou is a concrete culvert carrying Contour ST over Contraband Bayou in Calcasieu Parish, Louisiana. It was built in 1970, so it is 55 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 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 2,440 vehicles a day, projected to reach 2,684 by 2039. The structure is 21 ft (6.4 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesContour ST
CrossesContraband Bayou
Location0.09 MI W of LA 385
RouteCounty Highway 0
CountyCalcasieu Parish
StateLouisiana
Coordinates30.17342, -93.21568
Functional classUrban 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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width80 ft (24.4 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,440 (2019)
Projected traffic2,684 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Contour ST over Contraband Bayou built?

It was built in 1970, making it 55 years old in 2025.

What condition is Contour ST over Contraband 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 November 2023.

How much traffic does Contour ST over Contraband Bayou carry?

About 2,440 vehicles per day (2019 count).

How long is Contour ST over Contraband Bayou?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 80 ft wide.

Who owns Contour ST over Contraband Bayou?

It is owned by the City or Municipal Highway Agency.