US Bridges

CO 321 over Colbert-Branch Off Kelly

Good

Talladega County, Alabama · 1.0 S Al 21 · Structure no. 005680

Built
1956
69 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
695
2018 count
Owner
County
County Highway Agency

About this bridge

CO 321 over Colbert-Branch Off Kelly is a concrete culvert carrying CO 321 over Colbert-Branch Off Kelly in Talladega County, Alabama. It was built in 1956, so it is 69 years old, older than the Alabama average of 51.1 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 695 vehicles a day, roughly 12% of them trucks, projected to reach 890 by 2038. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCO 321
CrossesColbert-Branch Off Kelly
Location1.0 S Al 21
RouteCounty Highway 321
CountyTalladega County
StateAlabama
Coordinates33.44833, -86.02667
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.6 US tons
Inventory rating40.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic695 (2018)
Projected traffic890 by 2038
Trucks12%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$411,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO 321 over Colbert-Branch Off Kelly built?

It was built in 1956, making it 69 years old in 2025.

What condition is CO 321 over Colbert-Branch Off Kelly 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 December 2023.

How much traffic does CO 321 over Colbert-Branch Off Kelly carry?

About 695 vehicles per day (2018 count), of which roughly 12% are trucks.

How long is CO 321 over Colbert-Branch Off Kelly?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns CO 321 over Colbert-Branch Off Kelly?

It is owned by the County Highway Agency.