US Bridges

SR21 over Snow Creek

Fair

Calhoun County, Alabama · JCT Old US431 / SR21 · Structure no. 007609

Built
1962
63 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
20 ft
2 main spans
Daily traffic
30,466
2022 count
Owner
State
State Highway Agency

About this bridge

SR21 over Snow Creek is a concrete culvert carrying SR21 over Snow Creek in Calhoun County, Alabama. It was built in 1962, so it is 63 years old, older 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 5 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 30,466 vehicles a day, roughly 5% of them trucks, projected to reach 42,652 by 2042. The structure is 20 ft (6.2 m) long.

Location

Open in Google Maps
CarriesSR21
CrossesSnow Creek
LocationJCT Old US431 / SR21
RouteState Highway 21
CountyCalhoun County
StateAlabama
Coordinates33.69472, -85.82336
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating38.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span9 ft (2.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,466 (2022)
Projected traffic42,652 by 2042
Trucks5%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$1.7 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR21 over Snow Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is SR21 over Snow 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 October 2023.

How much traffic does SR21 over Snow Creek carry?

About 30,466 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is SR21 over Snow Creek?

The structure is 20 ft (6.2 m) long with a longest span of 9 ft (2.8 m).

Who owns SR21 over Snow Creek?

It is owned by the State Highway Agency.