US Bridges

SH-20/SEC-1/L23.0 over Main Ditch

Good

Phillips County, Arkansas · 0.45 MI South of JCT 49 · Structure no. 0000000000M0515

Built
1966
59 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
850
2018 count
Owner
State
State Highway Agency

About this bridge

SH-20/SEC-1/L23.0 over Main Ditch is a concrete culvert carrying SH-20/SEC-1/L23.0 over Main Ditch in Phillips County, Arkansas. It was built in 1966, so it is 59 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 850 vehicles a day, roughly 21% of them trucks, projected to reach 932 by 2027. The structure is 25 ft (7.6 m) long.

CarriesSH-20/SEC-1/L23.0
CrossesMain Ditch
Location0.45 MI South of JCT 49
RouteState Highway 20
Coordinates34.49479, -90.61086
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length25 ft (7.6 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2018)
Projected traffic932 by 2027
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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-20/SEC-1/L23.0 over Main Ditch built?

It was built in 1966, making it 59 years old in 2025.

What condition is SH-20/SEC-1/L23.0 over Main Ditch 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 August 2024.

How much traffic does SH-20/SEC-1/L23.0 over Main Ditch carry?

About 850 vehicles per day (2018 count), of which roughly 21% are trucks.

How long is SH-20/SEC-1/L23.0 over Main Ditch?

The structure is 25 ft (7.6 m) long with a longest span of 13 ft (4 m).

Who owns SH-20/SEC-1/L23.0 over Main Ditch?

It is owned by the State Highway Agency.