US Bridges

LA0513 over Ten Mile Bayou

Fair

De Soto Parish, Louisiana · 2.9 MI North of LA 483 · Structure no. 041603000402911

Built
1969
56 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
243
2021 count
Owner
State
State Highway Agency

About this bridge

LA0513 over Ten Mile Bayou is a concrete slab carrying LA0513 over Ten Mile Bayou in De Soto Parish, Louisiana. It was built in 1969, so it is 56 years old, older 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 5 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 243 vehicles a day, roughly 20% of them trucks, projected to reach 267 by 2041. The structure is 57 ft (17.4 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLA0513
CrossesTen Mile Bayou
Location2.9 MI North of LA 483
RouteState Highway 513
Coordinates31.91384, -93.6181
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic243 (2021)
Projected traffic267 by 2041
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 LA0513 over Ten Mile Bayou built?

It was built in 1969, making it 56 years old in 2025.

What condition is LA0513 over Ten Mile 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 May 2023.

How much traffic does LA0513 over Ten Mile Bayou carry?

About 243 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is LA0513 over Ten Mile Bayou?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns LA0513 over Ten Mile Bayou?

It is owned by the State Highway Agency.