US Bridges

SD045 over Ck

Fair

Charles Mix County, South Dakota · 1.6 S Brule CO Line · Structure no. 000000012230017

Built
1948
77 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
26 ft
4 main spans
Daily traffic
963
2023 count
Owner
State
State Highway Agency

About this bridge

SD045 over Ck is a steel culvert carrying SD045 over Ck in Charles Mix County, South Dakota. It was built in 1948, so it is 77 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 963 vehicles a day, roughly 26% of them trucks, projected to reach 1,383 by 2043. The structure is 26 ft (8 m) long. If it were closed, the detour would be 67.1 mi (108 km).

CarriesSD045
CrossesCk
Location1.6 S Brule CO Line
RouteState Highway 45
Coordinates43.47522, -98.84518
Functional classRural Minor 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length26 ft (8 m)
Longest span5 ft (1.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic963 (2023)
Projected traffic1,383 by 2043
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed67.1 mi (108 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SD045 over Ck built?

It was built in 1948, making it 77 years old in 2025.

What condition is SD045 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 2023.

How much traffic does SD045 over Ck carry?

About 963 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is SD045 over Ck?

The structure is 26 ft (8 m) long with a longest span of 5 ft (1.6 m).

Who owns SD045 over Ck?

It is owned by the State Highway Agency.