US Bridges

Longleaf RD over Bayou

GoodPosted for load

Vermilion Parish, Louisiana · 1.9 MI E of LA 13 · Structure no. 035700000200237

Built
2013
12 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
112 ft
6 main spans
Daily traffic
243
2021 count
Owner
County
County Highway Agency

About this bridge

Longleaf RD over Bayou is a wood or timber stringer/multi-beam or girder carrying Longleaf RD over Bayou in Vermilion Parish, Louisiana. It was built in 2013, so it is 12 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 243 vehicles a day, projected to reach 267 by 2041. The structure is 112 ft (34.1 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesLongleaf RD
CrossesBayou
Location1.9 MI E of LA 13
RouteCounty Highway 0
Coordinates30.09553, -92.3443
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.7 US tons
Inventory rating25 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans6
Design loadH 20
Structure length112 ft (34.1 m)
Longest span19 ft (5.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic243 (2021)
Projected traffic267 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Longleaf RD over Bayou built?

It was built in 2013, making it 12 years old in 2025.

What condition is Longleaf RD over Bayou in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Longleaf RD over Bayou carry?

About 243 vehicles per day (2021 count).

How long is Longleaf RD over Bayou?

The structure is 112 ft (34.1 m) long with a longest span of 19 ft (5.8 m) and a deck 24 ft wide.

Who owns Longleaf RD over Bayou?

It is owned by the County Highway Agency.