US Bridges

Prairie RD over Bayou Little

FairPosted for load

Vermilion Parish, Louisiana · 0.6 MI S of Community RD · Structure no. 035700000030372

Built
1975
50 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
84 ft
3 main spans
Daily traffic
18
2021 count
Owner
County
County Highway Agency

About this bridge

Prairie RD over Bayou Little is a prestressed concrete stringer/multi-beam or girder carrying Prairie RD over Bayou Little in Vermilion Parish, Louisiana. It was built in 1975, so it is 50 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 6 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 18 vehicles a day, projected to reach 19 by 2041. The structure is 84 ft (25.6 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesPrairie RD
CrossesBayou Little
Location0.6 MI S of Community RD
RouteCounty Highway 0
CountyVermilion Parish
StateLouisiana
Coordinates29.87419, -92.19283
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
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 rating17.5 US tons
Inventory rating8.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.8 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18 (2021)
Projected traffic19 by 2041
Trucks—
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$300,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Prairie RD over Bayou Little built?

It was built in 1975, making it 50 years old in 2025.

What condition is Prairie RD over Bayou Little 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 2023.

How much traffic does Prairie RD over Bayou Little carry?

About 18 vehicles per day (2021 count).

How long is Prairie RD over Bayou Little?

The structure is 84 ft (25.6 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns Prairie RD over Bayou Little?

It is owned by the County Highway Agency.