US Bridges

SD050 over Ck

Good

Charles Mix County, South Dakota · 12.7 N JCT Sd 44 · Structure no. 000000012079000

Built
1984
41 years old
Condition
Good
inspected August 2021
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
190
2024 count
Owner
State
State Highway Agency

About this bridge

SD050 over Ck is a concrete continuous culvert carrying SD050 over Ck in Charles Mix County, South Dakota. It was built in 1984, so it is 41 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 190 vehicles a day, roughly 22% of them trucks, projected to reach 246 by 2044. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSD050
CrossesCk
Location12.7 N JCT Sd 44
RouteState Highway 50
Coordinates43.49971, -99.14212
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating87 US tons
Inventory rating52 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2024)
Projected traffic246 by 2044
Trucks22%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$12,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SD050 over Ck built?

It was built in 1984, making it 41 years old in 2025.

What condition is SD050 over Ck 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 August 2021.

How much traffic does SD050 over Ck carry?

About 190 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is SD050 over Ck?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).

Who owns SD050 over Ck?

It is owned by the State Highway Agency.