US Bridges

Ar HWY 8 over Alsobrook Slough

Good

Dallas County, Arkansas · 10.58 MI East of SH 7 · Structure no. 000000000007471

Built
2022
3 years old
Condition
Good
inspected October 2024
Type
Channel Beam
Concrete
Length
155 ft
5 main spans
Daily traffic
261
2018 count
Owner
State
State Highway Agency

About this bridge

Ar HWY 8 over Alsobrook Slough is a concrete channel beam carrying Ar HWY 8 over Alsobrook Slough in Dallas 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 261 vehicles a day, roughly 1% of them trucks, projected to reach 290 by 2028. The structure is 155 ft (47.2 m) long and 34 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesAr HWY 8
CrossesAlsobrook Slough
Location10.58 MI East of SH 7
RouteState Highway 8
Coordinates33.99025, -92.73136
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHL 93
Structure length155 ft (47.2 m)
Longest span31 ft (9.4 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic261 (2018)
Projected traffic290 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 8 over Alsobrook Slough built?

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

What condition is Ar HWY 8 over Alsobrook 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 October 2024.

How much traffic does Ar HWY 8 over Alsobrook Slough carry?

About 261 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Ar HWY 8 over Alsobrook Slough?

The structure is 155 ft (47.2 m) long with a longest span of 31 ft (9.4 m) and a deck 34 ft wide.

Who owns Ar HWY 8 over Alsobrook Slough?

It is owned by the State Highway Agency.