US Bridges

LA0146 over Poplar Branch

Good

Jackson Parish, Louisiana · 1.5 Miles South of LA 155 · Structure no. 052500000050237

Built
2013
12 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
882
2021 count
Owner
State
State Highway Agency

About this bridge

LA0146 over Poplar Branch is a concrete slab carrying LA0146 over Poplar Branch in Jackson Parish, Louisiana. It was built in 2013, so it is 12 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 882 vehicles a day, roughly 15% of them trucks, projected to reach 970 by 2041. The structure is 80 ft (24.4 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLA0146
CrossesPoplar Branch
Location1.5 Miles South of LA 155
RouteState Highway 146
Coordinates32.34695, -92.549
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 protection8 Very GoodNo problems noted.
Last inspectionApril 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic882 (2021)
Projected traffic970 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 LA0146 over Poplar Branch built?

It was built in 2013, making it 12 years old in 2025.

What condition is LA0146 over Poplar Branch 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 April 2024.

How much traffic does LA0146 over Poplar Branch carry?

About 882 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0146 over Poplar Branch?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns LA0146 over Poplar Branch?

It is owned by the State Highway Agency.