US Bridges

12590-416th Avenue over Ck

PoorClosed to traffic

Day County, South Dakota · 3W & 4.IN Pierpont · Structure no. 000000019040019

Built
1932
93 years old
Condition
Poor
inspected June 2014
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
70
2022 count
Owner
County
County Highway Agency

About this bridge

12590-416th Avenue over Ck is a steel stringer/multi-beam or girder carrying 12590-416th Avenue over Ck in Day County, South Dakota. It was built in 1932, so it is 93 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 1 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. Its operating status is: closed to all traffic.

It carries about 70 vehicles a day, roughly 2% of them trucks, projected to reach 70 by 2032. The structure is 22 ft (6.7 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries12590-416th Avenue
CrossesCk
Location3W & 4.IN Pierpont
Coordinates45.56059, -97.89755
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure1 Imminent FailureMajor deterioration or section loss present in critical structural components. Bridge is closed to traffic but corrective action may put it back in light service.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection0 FailedOut of service and beyond corrective action.
Last inspectionJune 2014
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width23 ft (6.9 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2022)
Projected traffic70 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$298,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 12590-416th Avenue over Ck built?

It was built in 1932, making it 93 years old in 2025.

What condition is 12590-416th Avenue over 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 June 2014.

How much traffic does 12590-416th Avenue over Ck carry?

About 70 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 12590-416th Avenue over Ck?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 23 ft wide.

Who owns 12590-416th Avenue over Ck?

It is owned by the County Highway Agency.