US Bridges

Riley RD over Owl Ck

Fair

Butte County, South Dakota · 6.0W 1.1S Newell · Structure no. 000000010250352

Built
2021
4 years old
Condition
Fair
inspected July 2022
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
71
2022 count
Owner
County
County Highway Agency

About this bridge

Riley RD over Owl Ck is a concrete culvert carrying Riley RD over Owl Ck in Butte County, South Dakota. It was built in 2021, so it is 4 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 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 71 vehicles a day, roughly 2% of them trucks, projected to reach 71 by 2032. The structure is 44 ft (13.3 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesRiley RD
CrossesOwl Ck
Location6.0W 1.1S Newell
RouteCounty Highway 0
Coordinates44.70279, -103.54825
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 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHL 93
Structure length44 ft (13.3 m)
Longest span10 ft (3 m)
Deck width24 ft (7.3 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71 (2022)
Projected traffic71 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Riley RD over Owl Ck built?

It was built in 2021, making it 4 years old in 2025.

What condition is Riley RD over Owl 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 Riley RD over Owl Ck carry?

About 71 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Riley RD over Owl Ck?

The structure is 44 ft (13.3 m) long with a longest span of 10 ft (3 m) and a deck 24 ft wide.

Who owns Riley RD over Owl Ck?

It is owned by the County Highway Agency.