US Bridges

Common Street over Contraband Bayou

Fair

Calcasieu Parish, Louisiana · 0.06 MI N of LA 3186 · Structure no. 071030106931281

Built
1999
26 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
17,746
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Common Street over Contraband Bayou is a concrete slab carrying Common Street over Contraband Bayou in Calcasieu 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 17,746 vehicles a day, projected to reach 19,520 by 2039. The structure is 140 ft (42.7 m) long and 78 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCommon Street
CrossesContraband Bayou
Location0.06 MI N of LA 3186
RouteCity Street 0
Coordinates30.17704, -93.21396
Functional classUrban Collector

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 protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width78 ft (23.9 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,746 (2019)
Projected traffic19,520 by 2039
Trucks—
Lanes on structure4
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 Common Street over Contraband Bayou built?

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

What condition is Common Street 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 May 2024.

How much traffic does Common Street over Contraband Bayou carry?

About 17,746 vehicles per day (2019 count).

How long is Common Street over Contraband Bayou?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 78 ft wide.

Who owns Common Street over Contraband Bayou?

It is owned by the City or Municipal Highway Agency.