US Bridges

Post Oak Drive over Buchanan Bayou Trib

Fair

Caddo Parish, Louisiana · 0.3M East Sparks Davis RD · Structure no. 040932193935301

Built
1991
34 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
38 ft
2 main spans
Daily traffic
38
2019 count
Owner
County
County Highway Agency

About this bridge

Post Oak Drive over Buchanan Bayou Trib is a concrete slab carrying Post Oak Drive over Buchanan Bayou Trib in Caddo 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 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 38 vehicles a day, projected to reach 41 by 2039. The structure is 38 ft (11.6 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesPost Oak Drive
CrossesBuchanan Bayou Trib
Location0.3M East Sparks Davis RD
RouteCounty Highway 0
Coordinates32.32085, -93.88448
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38 (2019)
Projected traffic41 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 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 Post Oak Drive over Buchanan Bayou Trib built?

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

What condition is Post Oak Drive over Buchanan Bayou Trib 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 Post Oak Drive over Buchanan Bayou Trib carry?

About 38 vehicles per day (2019 count).

How long is Post Oak Drive over Buchanan Bayou Trib?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Post Oak Drive over Buchanan Bayou Trib?

It is owned by the County Highway Agency.