US Bridges

LA0514 over Grand Bayou

Good

Red River Parish, Louisiana · 0.9 MI E. of LA 788 · Structure no. 044100000040329

Built
2013
12 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete
Length
160 ft
8 main spans
Daily traffic
615
2021 count
Owner
State
State Highway Agency

About this bridge

LA0514 over Grand Bayou is a concrete slab carrying LA0514 over Grand Bayou in Red River Parish, Louisiana. It was built in 2013, so it is 12 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 615 vehicles a day, roughly 19% of them trucks, projected to reach 676 by 2041. The structure is 160 ft (48.8 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLA0514
CrossesGrand Bayou
Location0.9 MI E. of LA 788
RouteState Highway 514
Coordinates32.17794, -93.2868
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span20 ft (6.1 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic615 (2021)
Projected traffic676 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 LA0514 over Grand Bayou built?

It was built in 2013, making it 12 years old in 2025.

What condition is LA0514 over Grand 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 June 2023.

How much traffic does LA0514 over Grand Bayou carry?

About 615 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0514 over Grand Bayou?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 35 ft wide.

Who owns LA0514 over Grand Bayou?

It is owned by the State Highway Agency.