US Bridges

Mlk Jr. St. over Choupique Bayou

FairPosted for load

St. Mary Parish, Louisiana · 0.2 MI SE of LA 83 · Structure no. 035129499913401

Built
1965
60 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
210
2022 count
Owner
County
County Highway Agency

About this bridge

Mlk Jr. St. over Choupique Bayou is a concrete slab carrying Mlk Jr. St. over Choupique Bayou in St. Mary Parish, Louisiana. It was built in 1965, so it is 60 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. Its operating status is: posted for load restriction.

It carries about 210 vehicles a day, projected to reach 231 by 2042. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMlk Jr. St.
CrossesChoupique Bayou
Location0.2 MI SE of LA 83
RouteCounty Highway 0
CountySt. Mary Parish
StateLouisiana
Coordinates29.8329, -91.56753
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2022)
Projected traffic231 by 2042
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

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 Mlk Jr. St. over Choupique Bayou built?

It was built in 1965, making it 60 years old in 2025.

What condition is Mlk Jr. St. over Choupique 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 April 2023.

How much traffic does Mlk Jr. St. over Choupique Bayou carry?

About 210 vehicles per day (2022 count).

How long is Mlk Jr. St. over Choupique Bayou?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns Mlk Jr. St. over Choupique Bayou?

It is owned by the County Highway Agency.