US Bridges

LA0124 over Big Branch

PoorPosted for load

Winn Parish, Louisiana · 1.82 Mi. East of US 84 · Structure no. 086401250101821

Built
1964
61 years old
Condition
Poor
inspected October 2023
Type
Slab
Concrete
Length
78 ft
4 main spans
Daily traffic
1,348
2021 count
Owner
State
State Highway Agency

About this bridge

LA0124 over Big Branch is a concrete slab carrying LA0124 over Big Branch in Winn Parish, Louisiana. It was built in 1964, so it is 61 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,348 vehicles a day, roughly 14% of them trucks, projected to reach 1,482 by 2041. The structure is 78 ft (23.8 m) long and 27 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesLA0124
CrossesBig Branch
Location1.82 Mi. East of US 84
RouteState Highway 124
Coordinates31.91374, -92.5122
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating19.3 US tons
Inventory rating15 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,348 (2021)
Projected traffic1,482 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0124 over Big Branch built?

It was built in 1964, making it 61 years old in 2025.

What condition is LA0124 over Big Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does LA0124 over Big Branch carry?

About 1,348 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0124 over Big Branch?

The structure is 78 ft (23.8 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns LA0124 over Big Branch?

It is owned by the State Highway Agency.