US Bridges

US0090 over Choupique Bayou

Fair

St. Mary Parish, Louisiana · 0.2 Mi. NW of LA 83 · Structure no. 035104240507272

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
460 ft
2 main spans
Daily traffic
10,070
2021 count
Owner
State
State Highway Agency

About this bridge

US0090 over Choupique Bayou is a prestressed concrete stringer/multi-beam or girder carrying US0090 over Choupique Bayou in St. Mary Parish, Louisiana. It was built in 1978, so it is 47 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 5 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 10,070 vehicles a day, roughly 14% of them trucks, projected to reach 11,077 by 2041. The structure is 460 ft (140.2 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS0090
CrossesChoupique Bayou
Location0.2 Mi. NW of LA 83
RouteU.S. Route 90
CountySt. Mary Parish
StateLouisiana
Coordinates29.83653, -91.56713
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 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 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 rating79 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+7 approach)
Design loadHS 20
Structure length460 ft (140.2 m)
Longest span55 ft (16.8 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,070 (2021)
Projected traffic11,077 by 2041
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US0090 over Choupique Bayou built?

It was built in 1978, making it 47 years old in 2025.

What condition is US0090 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 November 2023.

How much traffic does US0090 over Choupique Bayou carry?

About 10,070 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is US0090 over Choupique Bayou?

The structure is 460 ft (140.2 m) long with a longest span of 55 ft (16.8 m) and a deck 44 ft wide.

Who owns US0090 over Choupique Bayou?

It is owned by the State Highway Agency.