US Bridges

LA0507 over Saline Bayou

Fair

Bienville Parish, Louisiana · 1.0 Mile East of LA HWY 9 · Structure no. 040700900500981

Built
1986
39 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
321 ft
16 main spans
Daily traffic
540
2021 count
Owner
State
State Highway Agency

About this bridge

LA0507 over Saline Bayou is a concrete slab carrying LA0507 over Saline Bayou in Bienville Parish, Louisiana. It was built in 1986, so it is 39 years old, younger 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 6 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 540 vehicles a day, roughly 25% of them trucks, projected to reach 594 by 2041. The structure is 321 ft (97.8 m) long and 33 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesLA0507
CrossesSaline Bayou
Location1.0 Mile East of LA HWY 9
RouteState Highway 507
CountyBienville Parish
StateLouisiana
Coordinates32.35559, -92.9635
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans16
Design loadHS 20
Structure length321 ft (97.8 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2021)
Projected traffic594 by 2041
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 built?

It was built in 1986, making it 39 years old in 2025.

What condition is LA0507 over Saline 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 April 2024.

How much traffic does LA0507 over Saline Bayou carry?

About 540 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is LA0507 over Saline Bayou?

The structure is 321 ft (97.8 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns LA0507 over Saline Bayou?

It is owned by the State Highway Agency.