US Bridges

LA0013 over Grand Coulee

Fair

Acadia Parish, Louisiana · .1 MI North of LA 368 · Structure no. 030100570312931

Built
1960
65 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
23 ft
4 main spans
Daily traffic
5,027
2021 count
Owner
State
State Highway Agency

About this bridge

LA0013 over Grand Coulee is a concrete culvert carrying LA0013 over Grand Coulee in Acadia Parish, Louisiana. It was built in 1960, so it is 65 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 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 5,027 vehicles a day, roughly 13% of them trucks, projected to reach 5,529 by 2041. The structure is 23 ft (7 m) long and 52 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLA0013
CrossesGrand Coulee
Location.1 MI North of LA 368
RouteState Highway 13
Coordinates30.39236, -92.39744
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating29.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length23 ft (7 m)
Longest span5 ft (1.5 m)
Deck width52 ft (15.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,027 (2021)
Projected traffic5,529 by 2041
Trucks13%
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 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 LA0013 over Grand Coulee built?

It was built in 1960, making it 65 years old in 2025.

What condition is LA0013 over Grand Coulee 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 August 2024.

How much traffic does LA0013 over Grand Coulee carry?

About 5,027 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0013 over Grand Coulee?

The structure is 23 ft (7 m) long with a longest span of 5 ft (1.5 m) and a deck 52 ft wide.

Who owns LA0013 over Grand Coulee?

It is owned by the State Highway Agency.