US Bridges

County Road 21 over Adams Creek

Fair

Covington County, Alabama · CR 21 · Structure no. 017519

Built
2001
24 years old
Condition
Fair
inspected March 2024
Type
Channel Beam
Concrete
Length
68 ft
2 main spans
Daily traffic
163
2001 count
Owner
County
County Highway Agency

About this bridge

County Road 21 over Adams Creek is a concrete channel beam carrying County Road 21 over Adams Creek in Covington County, Alabama. It was built in 2001, so it is 24 years old, younger than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 163 vehicles a day, roughly 12% of them trucks, projected to reach 187 by 2030. The structure is 68 ft (20.7 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty Road 21
CrossesAdams Creek
LocationCR 21
RouteCounty Highway 21
CountyCovington County
StateAlabama
Coordinates31.36763, -86.59065
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79 US tons
Inventory rating47.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span34 ft (10.4 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic163 (2001)
Projected traffic187 by 2030
Trucks12%
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$642,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 21 over Adams Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is County Road 21 over Adams Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does County Road 21 over Adams Creek carry?

About 163 vehicles per day (2001 count), of which roughly 12% are trucks.

How long is County Road 21 over Adams Creek?

The structure is 68 ft (20.7 m) long with a longest span of 34 ft (10.4 m) and a deck 31 ft wide.

Who owns County Road 21 over Adams Creek?

It is owned by the County Highway Agency.