US Bridges

480th Avenue over S Fork of Beaver Creek

Fair

Lincoln County, South Dakota · 1W & 1.1S of Canton · Structure no. 000000042160151

Built
1953
72 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
53 ft
3 main spans
Daily traffic
53
2022 count
Owner
County
County Highway Agency

About this bridge

480th Avenue over S Fork of Beaver Creek is a concrete continuous slab carrying 480th Avenue over S Fork of Beaver Creek in Lincoln County, South Dakota. It was built in 1953, so it is 72 years old, older than the South Dakota average of 48.9 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 53 vehicles a day, roughly 2% of them trucks, projected to reach 53 by 2032. The structure is 53 ft (16.1 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries480th Avenue
CrossesS Fork of Beaver Creek
Location1W & 1.1S of Canton
RouteCounty Highway 0
Coordinates43.28599, -96.60893
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length53 ft (16.1 m)
Longest span17 ft (5.3 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53 (2022)
Projected traffic53 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 480th Avenue over S Fork of Beaver Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is 480th Avenue over S Fork of Beaver 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 May 2024.

How much traffic does 480th Avenue over S Fork of Beaver Creek carry?

About 53 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 480th Avenue over S Fork of Beaver Creek?

The structure is 53 ft (16.1 m) long with a longest span of 17 ft (5.3 m) and a deck 27 ft wide.

Who owns 480th Avenue over S Fork of Beaver Creek?

It is owned by the County Highway Agency.