US Bridges

LA0124 over Diversion Canal

FairPosted for load

Catahoula Parish, Louisiana · 2.8 MI North of LA 3102 · Structure no. 581301430402801

Built
1967
58 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
542 ft
9 main spans
Daily traffic
410
2021 count
Owner
State
State Highway Agency

About this bridge

LA0124 over Diversion Canal is a steel stringer/multi-beam or girder carrying LA0124 over Diversion Canal in Catahoula Parish, Louisiana. It was built in 1967, so it is 58 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 410 vehicles a day, roughly 15% of them trucks, projected to reach 451 by 2041. The structure is 542 ft (165.2 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA0124
CrossesDiversion Canal
Location2.8 MI North of LA 3102
RouteState Highway 124
CountyCatahoula Parish
StateLouisiana
Coordinates31.36284, -91.8636
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length542 ft (165.2 m)
Longest span60 ft (18.3 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2021)
Projected traffic451 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 LA0124 over Diversion Canal built?

It was built in 1967, making it 58 years old in 2025.

What condition is LA0124 over Diversion Canal 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 LA0124 over Diversion Canal carry?

About 410 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0124 over Diversion Canal?

The structure is 542 ft (165.2 m) long with a longest span of 60 ft (18.3 m) and a deck 29 ft wide.

Who owns LA0124 over Diversion Canal?

It is owned by the State Highway Agency.