US Bridges

LA0156 over Mill Creek

Fair

Winn Parish, Louisiana · 2.73 Mi. East of LA 1233 · Structure no. 086400920203851

Built
1952
73 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
525
2021 count
Owner
State
State Highway Agency

About this bridge

LA0156 over Mill Creek is a concrete slab carrying LA0156 over Mill Creek in Winn Parish, Louisiana. It was built in 1952, so it is 73 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 525 vehicles a day, roughly 14% of them trucks, projected to reach 577 by 2041. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesLA0156
CrossesMill Creek
Location2.73 Mi. East of LA 1233
RouteState Highway 156
Coordinates31.96456, -92.8451
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment6: Equal to present minimum criteria
Operating rating27.4 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2021)
Projected traffic577 by 2041
Trucks14%
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 LA0156 over Mill Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is LA0156 over Mill 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 September 2023.

How much traffic does LA0156 over Mill Creek carry?

About 525 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0156 over Mill Creek?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA0156 over Mill Creek?

It is owned by the State Highway Agency.