US Bridges

Keith-Hall RD over Buchanan Bayou

Fair

Caddo Parish, Louisiana · 0.2 Mi. Southof Ph. RD.22 · Structure no. 040932197935121

Built
1998
27 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
95
2019 count
Owner
County
County Highway Agency

About this bridge

Keith-Hall RD over Buchanan Bayou is a concrete slab carrying Keith-Hall RD over Buchanan Bayou in Caddo Parish, Louisiana. It was built in 1998, so it is 27 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 6 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 95 vehicles a day, projected to reach 104 by 2039. The structure is 95 ft (29 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesKeith-Hall RD
CrossesBuchanan Bayou
Location0.2 Mi. Southof Ph. RD.22
RouteCounty Highway 0
Coordinates32.32875, -93.85339
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (2019)
Projected traffic104 by 2039
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Keith-Hall RD over Buchanan Bayou built?

It was built in 1998, making it 27 years old in 2025.

What condition is Keith-Hall RD over Buchanan 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 March 2023.

How much traffic does Keith-Hall RD over Buchanan Bayou carry?

About 95 vehicles per day (2019 count).

How long is Keith-Hall RD over Buchanan Bayou?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Keith-Hall RD over Buchanan Bayou?

It is owned by the County Highway Agency.