US Bridges

LA1231-1 over Pole Mill Creek

Good

Winn Parish, Louisiana · 0.68 Mi. West of US 167 · Structure no. 086408640800681

Built
2002
23 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
24 ft
3 main spans
Daily traffic
569
2021 count
Owner
State
State Highway Agency

About this bridge

LA1231-1 over Pole Mill Creek is a concrete culvert carrying LA1231-1 over Pole Mill Creek in Winn Parish, Louisiana. It was built in 2002, so it is 23 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 569 vehicles a day, roughly 8% of them trucks, projected to reach 625 by 2041. The structure is 24 ft (7.3 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLA1231-1
CrossesPole Mill Creek
Location0.68 Mi. West of US 167
RouteState Highway 1231
Coordinates31.91704, -92.6365
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47.8 US tons
Inventory rating36.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span7 ft (2.1 m)
Deck width33 ft (10.2 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic569 (2021)
Projected traffic625 by 2041
Trucks8%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA1231-1 over Pole Mill Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is LA1231-1 over Pole Mill 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 November 2023.

How much traffic does LA1231-1 over Pole Mill Creek carry?

About 569 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is LA1231-1 over Pole Mill Creek?

The structure is 24 ft (7.3 m) long with a longest span of 7 ft (2.1 m) and a deck 33 ft wide.

Who owns LA1231-1 over Pole Mill Creek?

It is owned by the State Highway Agency.