US Bridges

County RD over Ash Ck

Good

Haakon County, South Dakota · 17.6N & 13.7W of Philip · Structure no. 000000028032309

Built
1998
27 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
28
2022 count
Owner
County
County Highway Agency

About this bridge

County RD over Ash Ck is a concrete continuous culvert carrying County RD over Ash Ck in Haakon County, South Dakota. It was built in 1998, so it is 27 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 28 vehicles a day, roughly 3% of them trucks, projected to reach 28 by 2032. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCounty RD
CrossesAsh Ck
Location17.6N & 13.7W of Philip
RouteCounty Highway 0
Coordinates44.29926, -101.94509
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 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 alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length23 ft (6.9 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 traffic28 (2022)
Projected traffic28 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD over Ash Ck built?

It was built in 1998, making it 27 years old in 2025.

What condition is County RD over Ash 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 September 2024.

How much traffic does County RD over Ash Ck carry?

About 28 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is County RD over Ash Ck?

The structure is 23 ft (6.9 m) long with a longest span of 11 ft (3.4 m).

Who owns County RD over Ash Ck?

It is owned by the County Highway Agency.