US Bridges

IRR SD046 over Ck

Fair

Charles Mix County, South Dakota · 0.9 E of Wagner · Structure no. 000000012519290

Built
1968
57 years old
Condition
Fair
inspected July 2022
Type
Culvert
Concrete Continuous
Length
35 ft
3 main spans
Daily traffic
1,199
2024 count
Owner
State
State Highway Agency

About this bridge

IRR SD046 over Ck is a concrete continuous culvert carrying IRR SD046 over Ck in Charles Mix County, South Dakota. It was built in 1968, so it is 57 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 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 1,199 vehicles a day, roughly 17% of them trucks, projected to reach 1,730 by 2044. The structure is 35 ft (10.8 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesIRR SD046
CrossesCk
Location0.9 E of Wagner
RouteState Highway 46
Coordinates43.08153, -98.26826
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length35 ft (10.8 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,199 (2024)
Projected traffic1,730 by 2044
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$14,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SD046 over Ck built?

It was built in 1968, making it 57 years old in 2025.

What condition is IRR SD046 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 July 2022.

How much traffic does IRR SD046 over Ck carry?

About 1,199 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is IRR SD046 over Ck?

The structure is 35 ft (10.8 m) long with a longest span of 11 ft (3.4 m).

Who owns IRR SD046 over Ck?

It is owned by the State Highway Agency.