US Bridges

LA0111 over Prairie Creek

Good

Vernon Parish, Louisiana · 5.79 MI E. Jct. US 171 · Structure no. 085801330305791

Built
1997
28 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete
Length
160 ft
8 main spans
Daily traffic
937
2021 count
Owner
State
State Highway Agency

About this bridge

LA0111 over Prairie Creek is a concrete slab carrying LA0111 over Prairie Creek in Vernon Parish, Louisiana. It was built in 1997, so it is 28 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 937 vehicles a day, roughly 14% of them trucks, projected to reach 1,030 by 2041. The structure is 160 ft (48.8 m) long and 33 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesLA0111
CrossesPrairie Creek
Location5.79 MI E. Jct. US 171
RouteState Highway 111
Coordinates31.23897, -93.2579
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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 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 width33 ft (10 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic937 (2021)
Projected traffic1,030 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 LA0111 over Prairie Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is LA0111 over Prairie Creek 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 January 2024.

How much traffic does LA0111 over Prairie Creek carry?

About 937 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0111 over Prairie Creek?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns LA0111 over Prairie Creek?

It is owned by the State Highway Agency.