US Bridges

LA0124 over Boggy Bayou

FairPosted for load

Catahoula Parish, Louisiana · .9 MI North of LA 3102 · Structure no. 581301430400901

Built
1960
65 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
154 ft
8 main spans
Daily traffic
287
2021 count
Owner
State
State Highway Agency

About this bridge

LA0124 over Boggy Bayou is a wood or timber stringer/multi-beam or girder carrying LA0124 over Boggy Bayou in Catahoula Parish, Louisiana. It was built in 1960, so it is 65 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 287 vehicles a day, roughly 15% of them trucks, projected to reach 315 by 2041. The structure is 154 ft (46.9 m) long and 23 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA0124
CrossesBoggy Bayou
Location.9 MI North of LA 3102
RouteState Highway 124
CountyCatahoula Parish
StateLouisiana
Coordinates31.33875, -91.8766
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 alignment7: Better than present minimum criteria
Operating rating28 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans8
Design loadH 10
Structure length154 ft (46.9 m)
Longest span19 ft (5.8 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic287 (2021)
Projected traffic315 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 Boggy Bayou built?

It was built in 1960, making it 65 years old in 2025.

What condition is LA0124 over Boggy Bayou 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 July 2024.

How much traffic does LA0124 over Boggy Bayou carry?

About 287 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0124 over Boggy Bayou?

The structure is 154 ft (46.9 m) long with a longest span of 19 ft (5.8 m) and a deck 23 ft wide.

Who owns LA0124 over Boggy Bayou?

It is owned by the State Highway Agency.