US Bridges

Smyrna Road over Dunking Creek

Good

Copiah County, Mississippi · Sec 16 T10N R 7E B · Structure no. SA1500000000159

Built
1966
59 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
110
2024 count
Owner
County
County Highway Agency

About this bridge

Smyrna Road over Dunking Creek is a concrete culvert carrying Smyrna Road over Dunking Creek in Copiah County, Mississippi. It was built in 1966, so it is 59 years old, older than the Mississippi average of 38.9 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 110 vehicles a day, roughly 8% of them trucks, projected to reach 230 by 2047. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 8.7 mi (14 km).

CarriesSmyrna Road
CrossesDunking Creek
LocationSec 16 T10N R 7E B
RouteCounty Highway 1300
Coordinates31.83781, -90.49711
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.5 US tons
Inventory rating27.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 15
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2024)
Projected traffic230 by 2047
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$171,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Smyrna Road over Dunking Creek built?

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

What condition is Smyrna Road over Dunking Creek 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 June 2024.

How much traffic does Smyrna Road over Dunking Creek carry?

About 110 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Smyrna Road over Dunking Creek?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Smyrna Road over Dunking Creek?

It is owned by the County Highway Agency.