US Bridges

County Highway #11 over Ck

Fair

Mellette County, South Dakota · 9.9N & 3.2E White Rv · Structure no. 000000048282111

Built
1962
63 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
40
2022 count
Owner
County
County Highway Agency

About this bridge

County Highway #11 over Ck is a concrete continuous culvert carrying County Highway #11 over Ck in Mellette County, South Dakota. It was built in 1962, so it is 63 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 40 vehicles a day, roughly 2% of them trucks, projected to reach 40 by 2032. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesCounty Highway #11
CrossesCk
Location9.9N & 3.2E White Rv
RouteCounty Highway 0
CountyMellette County
StateSouth Dakota
Coordinates43.7092, -100.68425
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating73.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length37 ft (11.3 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 traffic40 (2022)
Projected traffic40 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$54,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway #11 over Ck built?

It was built in 1962, making it 63 years old in 2025.

What condition is County Highway #11 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 2024.

How much traffic does County Highway #11 over Ck carry?

About 40 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Highway #11 over Ck?

The structure is 37 ft (11.3 m) long with a longest span of 11 ft (3.4 m).

Who owns County Highway #11 over Ck?

It is owned by the County Highway Agency.