US Bridges

Ben Street over Pony Ck

Poor

Hutchinson County, South Dakota · Ben Street Parkston · Structure no. 000000034068070

Built
1941
84 years old
Condition
Poor
inspected September 2023
Type
Slab
Concrete Continuous
Length
36 ft
2 main spans
Daily traffic
51
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Ben Street over Pony Ck is a concrete continuous slab carrying Ben Street over Pony Ck in Hutchinson County, South Dakota. It was built in 1941, so it is 84 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 51 vehicles a day, roughly 2% of them trucks, projected to reach 50 by 2032. The structure is 36 ft (11.1 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBen Street
CrossesPony Ck
LocationBen Street Parkston
RouteCity Street 0
Coordinates43.39867, -97.9819
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length36 ft (11.1 m)
Longest span17 ft (5.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2022)
Projected traffic50 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$278,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ben Street over Pony Ck built?

It was built in 1941, making it 84 years old in 2025.

What condition is Ben Street over Pony Ck in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does Ben Street over Pony Ck carry?

About 51 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Ben Street over Pony Ck?

The structure is 36 ft (11.1 m) long with a longest span of 17 ft (5.1 m) and a deck 27 ft wide.

Who owns Ben Street over Pony Ck?

It is owned by the Town or Township Highway Agency.