US Bridges

Co.Rd 21 over Dry Branch

Good

Autauga County, Alabama · Swift Creek Park · Structure no. 013299

Built
1984
41 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
215
1988 count
Owner
County
County Highway Agency

About this bridge

Co.Rd 21 over Dry Branch is a concrete culvert carrying Co.Rd 21 over Dry Branch in Autauga County, Alabama. It was built in 1984, so it is 41 years old, younger 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 215 vehicles a day, roughly 5% of them trucks, projected to reach 225 by 2030. The structure is 26 ft (7.9 m) long and 40 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesCo.Rd 21
CrossesDry Branch
LocationSwift Creek Park
RouteCounty Highway 21
StateAlabama
Coordinates32.42314, -86.62806
Functional classRural Minor 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 geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.1 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width40 ft (12.3 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic215 (1988)
Projected traffic225 by 2030
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$366,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Co.Rd 21 over Dry Branch built?

It was built in 1984, making it 41 years old in 2025.

What condition is Co.Rd 21 over Dry Branch 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.Rd 21 over Dry Branch carry?

About 215 vehicles per day (1988 count), of which roughly 5% are trucks.

How long is Co.Rd 21 over Dry Branch?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 40 ft wide.

Who owns Co.Rd 21 over Dry Branch?

It is owned by the County Highway Agency.