US Bridges

SH 7 S-4 Lm 13.64 over Slough

Fair

Ouachita County, Arkansas · 3.26 MI S Dallas CO Line · Structure no. 0000000000M0167

Built
1955
70 years old
Condition
Fair
inspected January 2025
Type
Channel Beam
Concrete
Length
38 ft
2 main spans
Daily traffic
410
2018 count
Owner
State
State Highway Agency

About this bridge

SH 7 S-4 Lm 13.64 over Slough is a concrete channel beam carrying SH 7 S-4 Lm 13.64 over Slough in Ouachita County, Arkansas. It was built in 1955, so it is 70 years old, older than the Arkansas average of 45.1 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 410 vehicles a day, roughly 7% of them trucks, projected to reach 584 by 2028. The structure is 38 ft (11.6 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSH 7 S-4 Lm 13.64
CrossesSlough
Location3.26 MI S Dallas CO Line
RouteState Highway 7
CountyOuachita County
StateArkansas
Coordinates33.76699, -92.82821
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2018)
Projected traffic584 by 2028
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 SH 7 S-4 Lm 13.64 over Slough built?

It was built in 1955, making it 70 years old in 2025.

What condition is SH 7 S-4 Lm 13.64 over Slough 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 January 2025.

How much traffic does SH 7 S-4 Lm 13.64 over Slough carry?

About 410 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is SH 7 S-4 Lm 13.64 over Slough?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.

Who owns SH 7 S-4 Lm 13.64 over Slough?

It is owned by the State Highway Agency.