US Bridges

LA0159 over Leonard Branch

PoorPosted for load

Webster Parish, Louisiana · .7 MI North of LA 615 · Structure no. 046000870208441

Built
1966
59 years old
Condition
Poor
inspected September 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
1,754
2021 count
Owner
State
State Highway Agency

About this bridge

LA0159 over Leonard Branch is a concrete slab carrying LA0159 over Leonard Branch in Webster Parish, Louisiana. It was built in 1966, so it is 59 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 1,754 vehicles a day, roughly 19% of them trucks, projected to reach 1,929 by 2041. The structure is 57 ft (17.4 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLA0159
CrossesLeonard Branch
Location.7 MI North of LA 615
RouteState Highway 159
Coordinates32.97658, -93.3097
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.6 US tons
Inventory rating15 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,754 (2021)
Projected traffic1,929 by 2041
Trucks19%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$312,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0159 over Leonard Branch built?

It was built in 1966, making it 59 years old in 2025.

What condition is LA0159 over Leonard 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 September 2023.

How much traffic does LA0159 over Leonard Branch carry?

About 1,754 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0159 over Leonard Branch?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns LA0159 over Leonard Branch?

It is owned by the State Highway Agency.