US Bridges

LA0112 over Six Mile Creek

Fair

Allen Parish, Louisiana · 0.3 MI E of LA 377 · Structure no. 070201880303211

Built
1962
63 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
600 ft
30 main spans
Daily traffic
1,138
2022 count
Owner
State
State Highway Agency

About this bridge

LA0112 over Six Mile Creek is a concrete slab carrying LA0112 over Six Mile Creek in Allen Parish, Louisiana. It was built in 1962, so it is 63 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 1,138 vehicles a day, roughly 17% of them trucks, projected to reach 1,251 by 2042. The structure is 600 ft (182.9 m) long and 29 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesLA0112
CrossesSix Mile Creek
Location0.3 MI E of LA 377
RouteState Highway 112
CountyAllen Parish
StateLouisiana
Coordinates30.81443, -92.9273
Functional classRural Major 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
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans30
Design loadHS 20
Structure length600 ft (182.9 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,138 (2022)
Projected traffic1,251 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 LA0112 over Six Mile Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is LA0112 over Six Mile Creek 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 March 2023.

How much traffic does LA0112 over Six Mile Creek carry?

About 1,138 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is LA0112 over Six Mile Creek?

The structure is 600 ft (182.9 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA0112 over Six Mile Creek?

It is owned by the State Highway Agency.