US Bridges

Ar HWY 91 over White Oak Slough

Good

Lawrence County, Arkansas · 1.63 MI S JCT412&91 · Structure no. 0000000000X1654

Built
2022
3 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
2,700
2018 count
Owner
State
State Highway Agency

About this bridge

Ar HWY 91 over White Oak Slough is a concrete culvert carrying Ar HWY 91 over White Oak Slough in Lawrence County, Arkansas. It was built in 2022, so it is 3 years old, younger than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,700 vehicles a day, roughly 1% of them trucks, projected to reach 2,999 by 2028. The structure is 40 ft (12.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesAr HWY 91
CrossesWhite Oak Slough
Location1.63 MI S JCT412&91
RouteState Highway 91
Coordinates36.04895, -90.94006
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating30 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length40 ft (12.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2018)
Projected traffic2,999 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ar HWY 91 over White Oak Slough built?

It was built in 2022, making it 3 years old in 2025.

What condition is Ar HWY 91 over White Oak Slough 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 July 2024.

How much traffic does Ar HWY 91 over White Oak Slough carry?

About 2,700 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Ar HWY 91 over White Oak Slough?

The structure is 40 ft (12.1 m) long with a longest span of 12 ft (3.7 m).

Who owns Ar HWY 91 over White Oak Slough?

It is owned by the State Highway Agency.