US Bridges

SH 13 White County over Mckown Slough

Fair

White County, Arkansas · 2.19 MI N JCT SH 367 · Structure no. 000000000030248

Built
1962
63 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
21 ft
3 main spans
Daily traffic
2,800
2018 count
Owner
State
State Highway Agency

About this bridge

SH 13 White County over Mckown Slough is a concrete culvert carrying SH 13 White County over Mckown Slough in White County, Arkansas. It was built in 1962, so it is 63 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 2,800 vehicles a day, roughly 1% of them trucks, projected to reach 1,762 by 2028. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSH 13 White County
CrossesMckown Slough
Location2.19 MI N JCT SH 367
RouteState Highway 13
CountyWhite County
StateArkansas
Coordinates35.1458, -91.82011
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length21 ft (6.4 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2018)
Projected traffic1,762 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 13 White County over Mckown Slough built?

It was built in 1962, making it 63 years old in 2025.

What condition is SH 13 White County over Mckown 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 August 2023.

How much traffic does SH 13 White County over Mckown Slough carry?

About 2,800 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SH 13 White County over Mckown Slough?

The structure is 21 ft (6.4 m) long with a longest span of 7 ft (2.1 m).

Who owns SH 13 White County over Mckown Slough?

It is owned by the State Highway Agency.