US Bridges

LA0034 over Flat Branch

Fair

Jackson Parish, Louisiana · 0.7 MI North of LA 148 · Structure no. 052500670706191

Built
2002
23 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
2,877
2021 count
Owner
State
State Highway Agency

About this bridge

LA0034 over Flat Branch is a concrete slab carrying LA0034 over Flat Branch in Jackson 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,877 vehicles a day, roughly 15% of them trucks, projected to reach 3,164 by 2041. The structure is 120 ft (36.6 m) long and 47 ft wide.

Location

Open in Google Maps
CarriesLA0034
CrossesFlat Branch
Location0.7 MI North of LA 148
RouteState Highway 34
CountyJackson Parish
StateLouisiana
Coordinates32.38768, -92.4285
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,877 (2021)
Projected traffic3,164 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA0034 over Flat Branch built?

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

What condition is LA0034 over Flat Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does LA0034 over Flat Branch carry?

About 2,877 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0034 over Flat Branch?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 47 ft wide.

Who owns LA0034 over Flat Branch?

It is owned by the State Highway Agency.