US Bridges

Lee DR over Bayou Duplantier

Good

East Baton Rouge Parish, Louisiana · 0.9 MI NE of LA 42 · Structure no. 611730235910901

Built
2000
25 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete
Length
160 ft
8 main spans
Daily traffic
24,147
2024 count
Owner
County
County Highway Agency

About this bridge

Lee DR over Bayou Duplantier is a concrete slab carrying Lee DR over Bayou Duplantier in East Baton Rouge Parish, Louisiana. It was built in 2000, so it is 25 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 24,147 vehicles a day, projected to reach 26,561 by 2044. The structure is 160 ft (48.8 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLee DR
CrossesBayou Duplantier
Location0.9 MI NE of LA 42
RouteCounty Highway 0
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.40154, -91.15289
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.7 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span20 ft (6.1 m)
Deck width49 ft (14.9 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,147 (2024)
Projected traffic26,561 by 2044
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Lee DR over Bayou Duplantier built?

It was built in 2000, making it 25 years old in 2025.

What condition is Lee DR over Bayou Duplantier 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 June 2023.

How much traffic does Lee DR over Bayou Duplantier carry?

About 24,147 vehicles per day (2024 count).

How long is Lee DR over Bayou Duplantier?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 49 ft wide.

Who owns Lee DR over Bayou Duplantier?

It is owned by the County Highway Agency.