US Bridges

Riley RD over Indian Ck

FairPosted for load

Butte County, South Dakota · 6.0 W 2.3 N Newell · Structure no. 000000010250316

Built
1950
75 years old, rebuilt 1997
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
98 ft
2 main spans
Daily traffic
47
2022 count
Owner
County
County Highway Agency

About this bridge

Riley RD over Indian Ck is a steel stringer/multi-beam or girder carrying Riley RD over Indian Ck in Butte County, South Dakota. It was built in 1950 and reconstructed in 1997, so it is 75 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 47 vehicles a day, roughly 2% of them trucks, projected to reach 47 by 2032. The structure is 98 ft (29.8 m) long and 17 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesRiley RD
CrossesIndian Ck
Location6.0 W 2.3 N Newell
RouteCounty Highway 0
CountyButte County
StateSouth Dakota
Coordinates44.75535, -103.54752
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating23.4 US tons
Inventory rating17.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadUnknown
Structure length98 ft (29.8 m)
Longest span76 ft (23.3 m)
Deck width17 ft (5.3 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47 (2022)
Projected traffic47 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Indian Ck built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1997.

What condition is Riley RD over Indian 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 2024.

How much traffic does Riley RD over Indian Ck carry?

About 47 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Riley RD over Indian Ck?

The structure is 98 ft (29.8 m) long with a longest span of 76 ft (23.3 m) and a deck 17 ft wide.

Who owns Riley RD over Indian Ck?

It is owned by the County Highway Agency.