US Bridges

LA0104 over Bayou Plaquemine Brule

Good

St. Landry Parish, Louisiana · 1.4 MI W. of US 190 · Structure no. 034900000030421

Built
2013
12 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
2,158
2021 count
Owner
State
State Highway Agency

About this bridge

LA0104 over Bayou Plaquemine Brule is a concrete slab carrying LA0104 over Bayou Plaquemine Brule in St. Landry 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.

It carries about 2,158 vehicles a day, roughly 13% of them trucks, projected to reach 2,373 by 2041. The structure is 80 ft (24.4 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0104
CrossesBayou Plaquemine Brule
Location1.4 MI W. of US 190
RouteCounty Highway 104
CountySt. Landry Parish
StateLouisiana
Coordinates30.5383, -92.12994
Functional classRural Major Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
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 rating66 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,158 (2021)
Projected traffic2,373 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 LA0104 over Bayou Plaquemine Brule built?

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

What condition is LA0104 over Bayou Plaquemine Brule 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 August 2023.

How much traffic does LA0104 over Bayou Plaquemine Brule carry?

About 2,158 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0104 over Bayou Plaquemine Brule?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns LA0104 over Bayou Plaquemine Brule?

It is owned by the State Highway Agency.