US Bridges

CR-21 over Satilpa Creek (relief)

Good

Clarke County, Alabama · 1.38 MI SE JCT CR21&SR154 · Structure no. 021432

Built
1963
62 years old, rebuilt 2020
Condition
Good
inspected February 2025
Type
Channel Beam
Concrete
Length
200 ft
5 main spans
Daily traffic
160
2020 count
Owner
County
County Highway Agency

About this bridge

CR-21 over Satilpa Creek (relief) is a concrete channel beam carrying CR-21 over Satilpa Creek (relief) in Clarke County, Alabama. It was built in 1963 and reconstructed in 2020, so it is 62 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 160 vehicles a day, roughly 11% of them trucks, projected to reach 240 by 2040. The structure is 200 ft (61 m) long and 31 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesCR-21
CrossesSatilpa Creek (relief)
Location1.38 MI SE JCT CR21&SR154
RouteCounty Highway 21
StateAlabama
Coordinates31.77146, -87.99884
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating89.9 US tons
Inventory rating54.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length200 ft (61 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2020)
Projected traffic240 by 2040
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed16.2 mi (26 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$1.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was CR-21 over Satilpa Creek (relief) built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2020.

What condition is CR-21 over Satilpa Creek (relief) 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 February 2025.

How much traffic does CR-21 over Satilpa Creek (relief) carry?

About 160 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is CR-21 over Satilpa Creek (relief)?

The structure is 200 ft (61 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns CR-21 over Satilpa Creek (relief)?

It is owned by the County Highway Agency.