US Bridges

CR N423-C over Ditch 21 B

Good

Mississippi County, Arkansas · 3 MI NW of Dell · Structure no. 000000000003409

Built
1960
65 years old
Condition
Good
inspected January 2024
Type
Channel Beam
Concrete
Length
123 ft
5 main spans
Daily traffic
162
1987 count
Owner
County
County Highway Agency

About this bridge

CR N423-C over Ditch 21 B is a concrete channel beam carrying CR N423-C over Ditch 21 B in Mississippi County, Arkansas. It was built in 1960, so it is 65 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 162 vehicles a day, roughly 1% of them trucks, projected to reach 198 by 2007. The structure is 123 ft (37.5 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCR N423-C
CrossesDitch 21 B
Location3 MI NW of Dell
RouteCounty Highway 0N423
Coordinates35.90157, -90.06243
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadH 15
Structure length123 ft (37.5 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (1987)
Projected traffic198 by 2007
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR N423-C over Ditch 21 B built?

It was built in 1960, making it 65 years old in 2025.

What condition is CR N423-C over Ditch 21 B 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 January 2024.

How much traffic does CR N423-C over Ditch 21 B carry?

About 162 vehicles per day (1987 count), of which roughly 1% are trucks.

How long is CR N423-C over Ditch 21 B?

The structure is 123 ft (37.5 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns CR N423-C over Ditch 21 B?

It is owned by the County Highway Agency.