US Bridges

LA0034 over Iatt Creek

Good

Winn Parish, Louisiana · 0.2 MI E of LA 471 · Structure no. 086400000080666

Built
2016
9 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
965
2021 count
Owner
State
State Highway Agency

About this bridge

LA0034 over Iatt Creek is a concrete slab carrying LA0034 over Iatt Creek in Winn Parish, Louisiana. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 965 vehicles a day, roughly 14% of them trucks, projected to reach 1,061 by 2041. The structure is 140 ft (42.7 m) long and 37 ft wide. If it were closed, the detour would be 51 mi (82 km).

CarriesLA0034
CrossesIatt Creek
Location0.2 MI E of LA 471
RouteState Highway 34
Coordinates31.80483, -92.7505
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHL 93
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic965 (2021)
Projected traffic1,061 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed51 mi (82 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 LA0034 over Iatt Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is LA0034 over Iatt 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 October 2023.

How much traffic does LA0034 over Iatt Creek carry?

About 965 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0034 over Iatt Creek?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 37 ft wide.

Who owns LA0034 over Iatt Creek?

It is owned by the State Highway Agency.