US Bridges

LA0108 over Choupique Bayou

Fair

Calcasieu Parish, Louisiana · LA0108 · Structure no. 071001920205761

Built
1962
63 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
198 ft
1 main span
Daily traffic
1,553
2022 count
Owner
State
State Highway Agency

About this bridge

LA0108 over Choupique Bayou is a steel stringer/multi-beam or girder carrying LA0108 over Choupique Bayou in Calcasieu Parish, Louisiana. It was built in 1962, so it is 63 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 1,553 vehicles a day, roughly 6% of them trucks, projected to reach 1,708 by 2042. The structure is 198 ft (60.4 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLA0108
CrossesChoupique Bayou
LocationLA0108
RouteState Highway 108
CountyCalcasieu Parish
StateLouisiana
Coordinates30.13946, -93.4225
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating38 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+8 approach)
Design loadHS 20
Structure length198 ft (60.4 m)
Longest span45 ft (13.7 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,553 (2022)
Projected traffic1,708 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 LA0108 over Choupique Bayou built?

It was built in 1962, making it 63 years old in 2025.

What condition is LA0108 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 March 2023.

How much traffic does LA0108 over Choupique Bayou carry?

About 1,553 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is LA0108 over Choupique Bayou?

The structure is 198 ft (60.4 m) long with a longest span of 45 ft (13.7 m) and a deck 29 ft wide.

Who owns LA0108 over Choupique Bayou?

It is owned by the State Highway Agency.