US Bridges

LA0498 over Big Bayou

Good

Rapides Parish, Louisiana · 0.28 M S. of LA 1 · Structure no. 084008402200731

Built
1996
29 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
868
2021 count
Owner
State
State Highway Agency

About this bridge

LA0498 over Big Bayou is a concrete slab carrying LA0498 over Big Bayou in Rapides Parish, Louisiana. It was built in 1996, so it is 29 years old, younger 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 868 vehicles a day, roughly 4% of them trucks, projected to reach 954 by 2041. The structure is 120 ft (36.6 m) long and 85 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLA0498
CrossesBig Bayou
Location0.28 M S. of LA 1
RouteState Highway 498
Coordinates31.33957, -92.5212
Functional classUrban Minor Arterial

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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating80 US tons
Inventory rating48 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 width85 ft (25.8 m)
Roadway width81 ft (24.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic868 (2021)
Projected traffic954 by 2041
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0498 over Big Bayou built?

It was built in 1996, making it 29 years old in 2025.

What condition is LA0498 over Big 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 November 2024.

How much traffic does LA0498 over Big Bayou carry?

About 868 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is LA0498 over Big Bayou?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 85 ft wide.

Who owns LA0498 over Big Bayou?

It is owned by the State Highway Agency.