US Bridges

Chance Road over Thunder Butte Ck

Fair

Perkins County, South Dakota · 8.2E & 8.3S Bison · Structure no. 000000053322373

Built
1980
45 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

Chance Road over Thunder Butte Ck is a prestressed concrete tee beam carrying Chance Road over Thunder Butte Ck in Perkins County, South Dakota. It was built in 1980, so it is 45 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 5 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 26 vehicles a day, roughly 2% of them trucks, projected to reach 26 by 2032. The structure is 50 ft (15.2 m) long and 23 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesChance Road
CrossesThunder Butte Ck
Location8.2E & 8.3S Bison
RouteCounty Highway 0
CountyPerkins County
StateSouth Dakota
Coordinates45.41052, -102.28752
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span49 ft (15 m)
Deck width23 ft (7 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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$6,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Chance Road over Thunder Butte Ck built?

It was built in 1980, making it 45 years old in 2025.

What condition is Chance Road over Thunder Butte 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 May 2023.

How much traffic does Chance Road over Thunder Butte Ck carry?

About 26 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Chance Road over Thunder Butte Ck?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (15 m) and a deck 23 ft wide.

Who owns Chance Road over Thunder Butte Ck?

It is owned by the County Highway Agency.