US Bridges

LA3124 over Bogue Lusa Creek

Fair

Washington Parish, Louisiana · LA3124 · Structure no. 625900303203251

Built
1950
75 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
522 ft
17 main spans
Daily traffic
5,213
2021 count
Owner
State
State Highway Agency

About this bridge

LA3124 over Bogue Lusa Creek is a steel stringer/multi-beam or girder carrying LA3124 over Bogue Lusa Creek in Washington Parish, Louisiana. It was built in 1950, so it is 75 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.

It carries about 5,213 vehicles a day, roughly 9% of them trucks, projected to reach 5,734 by 2041. The structure is 522 ft (159.1 m) long and 68 ft wide.

Location

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CarriesLA3124
CrossesBogue Lusa Creek
LocationLA3124
RouteState Highway 3124
CountyWashington Parish
StateLouisiana
Coordinates30.78145, -89.85553
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; extensive scour has occurred
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans17
Design loadHS 20
Structure length522 ft (159.1 m)
Longest span40 ft (12.2 m)
Deck width68 ft (20.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,213 (2021)
Projected traffic5,734 by 2041
Trucks9%
Lanes on structure4
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 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 LA3124 over Bogue Lusa Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is LA3124 over Bogue Lusa Creek 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 LA3124 over Bogue Lusa Creek carry?

About 5,213 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA3124 over Bogue Lusa Creek?

The structure is 522 ft (159.1 m) long with a longest span of 40 ft (12.2 m) and a deck 68 ft wide.

Who owns LA3124 over Bogue Lusa Creek?

It is owned by the State Highway Agency.