US Bridges

LA1236 over Unnamed Creek

Good

Winn Parish, Louisiana · 2.85 Miles East of US 167 · Structure no. 086400000080601

Built
2015
10 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
825
2021 count
Owner
State
State Highway Agency

About this bridge

LA1236 over Unnamed Creek is a concrete slab carrying LA1236 over Unnamed Creek in Winn Parish, Louisiana. It was built in 2015, so it is 10 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 825 vehicles a day, roughly 14% of them trucks, projected to reach 907 by 2041. The structure is 100 ft (30.5 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLA1236
CrossesUnnamed Creek
Location2.85 Miles East of US 167
RouteState Highway 1236
Coordinates32.06123, -92.6163
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating66 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width39 ft (11.9 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic825 (2021)
Projected traffic907 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 LA1236 over Unnamed Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is LA1236 over Unnamed 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 September 2023.

How much traffic does LA1236 over Unnamed Creek carry?

About 825 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA1236 over Unnamed Creek?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 39 ft wide.

Who owns LA1236 over Unnamed Creek?

It is owned by the State Highway Agency.