US Bridges

LA0507 over Saline Bayou Relief

Good

Bienville Parish, Louisiana · 1.18 MI East of LA 9 · Structure no. 040700000000177

Built
2022
3 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
540
2021 count
Owner
State
State Highway Agency

About this bridge

LA0507 over Saline Bayou Relief is a concrete slab carrying LA0507 over Saline Bayou Relief in Bienville Parish, Louisiana. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 540 vehicles a day, roughly 13% of them trucks, projected to reach 594 by 2041. The structure is 140 ft (42.7 m) long and 35 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesLA0507
CrossesSaline Bayou Relief
Location1.18 MI East of LA 9
RouteState Highway 507
Coordinates32.35525, -92.96039
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadGreater than HL 93
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2021)
Projected traffic594 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 LA0507 over Saline Bayou Relief built?

It was built in 2022, making it 3 years old in 2025.

What condition is LA0507 over Saline Bayou Relief 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 May 2024.

How much traffic does LA0507 over Saline Bayou Relief carry?

About 540 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0507 over Saline Bayou Relief?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 35 ft wide.

Who owns LA0507 over Saline Bayou Relief?

It is owned by the State Highway Agency.