US Bridges

Leggitt Crossing over Alligator Bayou

Fair

West Carroll Parish, Louisiana · .3 Mi. Se. Hwy. 17 · Structure no. 056232425912611

Built
1984
41 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete
Length
59 ft
3 main spans
Daily traffic
425
2019 count
Owner
County
County Highway Agency

About this bridge

Leggitt Crossing over Alligator Bayou is a concrete slab carrying Leggitt Crossing over Alligator Bayou in West Carroll Parish, Louisiana. It was built in 1984, so it is 41 years old, younger 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 425 vehicles a day, projected to reach 467 by 2039. The structure is 59 ft (18 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLeggitt Crossing
CrossesAlligator Bayou
Location.3 Mi. Se. Hwy. 17
RouteCounty Highway 0
CountyWest Carroll Parish
StateLouisiana
Coordinates32.70798, -91.43439
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 alignment6: Equal to present minimum criteria
Operating rating55.7 US tons
Inventory rating43.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length59 ft (18 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2019)
Projected traffic467 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Leggitt Crossing over Alligator Bayou built?

It was built in 1984, making it 41 years old in 2025.

What condition is Leggitt Crossing over Alligator 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 January 2023.

How much traffic does Leggitt Crossing over Alligator Bayou carry?

About 425 vehicles per day (2019 count).

How long is Leggitt Crossing over Alligator Bayou?

The structure is 59 ft (18 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Leggitt Crossing over Alligator Bayou?

It is owned by the County Highway Agency.