US Bridges

LA0984 over Stumpy Bayou

Good

West Baton Rouge Parish, Louisiana · 2.7 M N of LA 984&LA 620 · Structure no. 616108611102611

Built
1965
60 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
2,446
2021 count
Owner
State
State Highway Agency

About this bridge

LA0984 over Stumpy Bayou is a concrete slab carrying LA0984 over Stumpy Bayou in West Baton Rouge 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,446 vehicles a day, roughly 10% of them trucks, projected to reach 2,690 by 2041. The structure is 80 ft (24.4 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLA0984
CrossesStumpy Bayou
Location2.7 M N of LA 984&LA 620
RouteState Highway 984
Coordinates30.57871, -91.36507
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,446 (2021)
Projected traffic2,690 by 2041
Trucks10%
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 LA0984 over Stumpy Bayou built?

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

What condition is LA0984 over Stumpy Bayou in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does LA0984 over Stumpy Bayou carry?

About 2,446 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0984 over Stumpy Bayou?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0984 over Stumpy Bayou?

It is owned by the State Highway Agency.