US Bridges

47700 301 ST over Ck

Fair

Union County, South Dakota · 1W Alcester · Structure no. 000000064076040

Built
2004
21 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
120
2022 count
Owner
County
County Highway Agency

About this bridge

47700 301 ST over Ck is a concrete continuous culvert carrying 47700 301 ST over Ck in Union County, South Dakota. It was built in 2004, so it is 21 years old, younger 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 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 120 vehicles a day, roughly 9% of them trucks, projected to reach 205 by 2032. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Carries47700 301 ST
CrossesCk
Location1W Alcester
RouteCounty Highway 0
Coordinates43.02581, -96.65511
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating103.7 US tons
Inventory rating62.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length27 ft (8.1 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2022)
Projected traffic205 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 47700 301 ST over Ck built?

It was built in 2004, making it 21 years old in 2025.

What condition is 47700 301 ST over Ck 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 August 2024.

How much traffic does 47700 301 ST over Ck carry?

About 120 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is 47700 301 ST over Ck?

The structure is 27 ft (8.1 m) long with a longest span of 13 ft (4 m).

Who owns 47700 301 ST over Ck?

It is owned by the County Highway Agency.