US Bridges

LA0122 over Dartigo Creek

Good

Grant Parish, Louisiana · 8.52 Mi. East of US 71 · Structure no. 082201290109091

Built
1993
32 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete
Length
240 ft
12 main spans
Daily traffic
683
2021 count
Owner
State
State Highway Agency

About this bridge

LA0122 over Dartigo Creek is a concrete slab carrying LA0122 over Dartigo Creek in Grant Parish, Louisiana. It was built in 1993, so it is 32 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 683 vehicles a day, roughly 14% of them trucks, projected to reach 751 by 2041. The structure is 240 ft (73.2 m) long and 41 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesLA0122
CrossesDartigo Creek
Location8.52 Mi. East of US 71
RouteState Highway 122
Coordinates31.6905, -92.7571
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span20 ft (6.1 m)
Deck width41 ft (12.5 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic683 (2021)
Projected traffic751 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0122 over Dartigo Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is LA0122 over Dartigo 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 August 2024.

How much traffic does LA0122 over Dartigo Creek carry?

About 683 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0122 over Dartigo Creek?

The structure is 240 ft (73.2 m) long with a longest span of 20 ft (6.1 m) and a deck 41 ft wide.

Who owns LA0122 over Dartigo Creek?

It is owned by the State Highway Agency.