US Bridges

Buffalo RD over Buffalo Bayou

Fair

De Soto Parish, Louisiana · 1.78 M South of LA 509 · Structure no. 041632036933791

Built
1991
34 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
133 ft
7 main spans
Daily traffic
165
2021 count
Owner
County
County Highway Agency

About this bridge

Buffalo RD over Buffalo Bayou is a concrete slab carrying Buffalo RD over Buffalo Bayou in De Soto Parish, Louisiana. It was built in 1991, so it is 34 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 165 vehicles a day, projected to reach 181 by 2041. The structure is 133 ft (40.5 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesBuffalo RD
CrossesBuffalo Bayou
Location1.78 M South of LA 509
RouteCounty Highway 0
CountyDe Soto Parish
StateLouisiana
Coordinates32.06005, -93.63219
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionOctober 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic165 (2021)
Projected traffic181 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Buffalo RD over Buffalo Bayou built?

It was built in 1991, making it 34 years old in 2025.

What condition is Buffalo RD over Buffalo 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 October 2024.

How much traffic does Buffalo RD over Buffalo Bayou carry?

About 165 vehicles per day (2021 count).

How long is Buffalo RD over Buffalo Bayou?

The structure is 133 ft (40.5 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Buffalo RD over Buffalo Bayou?

It is owned by the County Highway Agency.