US Bridges

Calhoun CR 20 over Slough

Fair

Calhoun County, Arkansas · 2 Mi. South CR 29 · Structure no. 000000000023932

Built
2017
8 years old
Condition
Fair
inspected January 2025
Type
Channel Beam
Concrete
Length
59 ft
3 main spans
Daily traffic
668
2018 count
Owner
County
County Highway Agency

About this bridge

Calhoun CR 20 over Slough is a concrete channel beam carrying Calhoun CR 20 over Slough in Calhoun County, Arkansas. It was built in 2017, so it is 8 years old, younger 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 668 vehicles a day, roughly 1% of them trucks. The structure is 59 ft (18 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCalhoun CR 20
CrossesSlough
Location2 Mi. South CR 29
RouteCounty Highway 20
CountyCalhoun County
StateArkansas
Coordinates33.42492, -92.58798
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 rating50 US tons
Inventory rating30 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadUnknown
Structure length59 ft (18 m)
Longest span19 ft (5.8 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic668 (2018)
Projected traffic—
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Calhoun CR 20 over Slough built?

It was built in 2017, making it 8 years old in 2025.

What condition is Calhoun CR 20 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 Calhoun CR 20 over Slough carry?

About 668 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Calhoun CR 20 over Slough?

The structure is 59 ft (18 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns Calhoun CR 20 over Slough?

It is owned by the County Highway Agency.