US Bridges

SR21 over Nfsouth Rr/Snow Creek

Fair

Calhoun County, Alabama · 0.6 MI No JCT US 78 · Structure no. 005757

Built
1957
68 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
561 ft
9 main spans
Daily traffic
12,778
2023 count
Owner
State
State Highway Agency

About this bridge

SR21 over Nfsouth Rr/Snow Creek is a steel continuous stringer/multi-beam or girder carrying SR21 over Nfsouth Rr/Snow Creek in Calhoun County, Alabama. It was built in 1957, so it is 68 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 12,778 vehicles a day, roughly 6% of them trucks, projected to reach 17,889 by 2043. The structure is 561 ft (171.1 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR21
CrossesNfsouth Rr/Snow Creek
Location0.6 MI No JCT US 78
RouteState Highway 21
CountyCalhoun County
StateAlabama
Coordinates33.61889, -85.82803
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length561 ft (171.1 m)
Longest span100 ft (30.5 m)
Deck width38 ft (11.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,778 (2023)
Projected traffic17,889 by 2043
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR21 over Nfsouth Rr/Snow Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is SR21 over Nfsouth Rr/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 April 2024.

How much traffic does SR21 over Nfsouth Rr/Snow Creek carry?

About 12,778 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR21 over Nfsouth Rr/Snow Creek?

The structure is 561 ft (171.1 m) long with a longest span of 100 ft (30.5 m) and a deck 38 ft wide.

Who owns SR21 over Nfsouth Rr/Snow Creek?

It is owned by the State Highway Agency.