US Bridges

Cannonsburg Road over Turpin Creek

Good

Jefferson County, Mississippi · Sec 31 T 8N R 1W B · Structure no. SA3200000000004

Built
1977
48 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
35 ft
2 main spans
Daily traffic
150
2024 count
Owner
County
County Highway Agency

About this bridge

Cannonsburg Road over Turpin Creek is a concrete culvert carrying Cannonsburg Road over Turpin Creek in Jefferson County, Mississippi. It was built in 1977, so it is 48 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 150 vehicles a day, roughly 8% of them trucks, projected to reach 225 by 2045. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCannonsburg Road
CrossesTurpin Creek
LocationSec 31 T 8N R 1W B
RouteCounty Highway 21
Coordinates31.64897, -91.20342
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.2 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic225 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Cannonsburg Road over Turpin Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Cannonsburg Road over Turpin 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 November 2024.

How much traffic does Cannonsburg Road over Turpin Creek carry?

About 150 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Cannonsburg Road over Turpin Creek?

The structure is 35 ft (10.7 m) long with a longest span of 16 ft (4.9 m).

Who owns Cannonsburg Road over Turpin Creek?

It is owned by the County Highway Agency.