US Bridges

411th Avenue over Ck

PoorPosted for load

Davison County, South Dakota · 4.7 N & 2 E Mitchell · Structure no. 000000018170053

Built
1935
90 years old, rebuilt 1965
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
40
2022 count
Owner
County
County Highway Agency

About this bridge

411th Avenue over Ck is a steel stringer/multi-beam or girder carrying 411th Avenue over Ck in Davison County, South Dakota. It was built in 1935 and reconstructed in 1965, so it is 90 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. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, roughly 2% of them trucks, projected to reach 40 by 2032. The structure is 31 ft (9.4 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries411th Avenue
CrossesCk
Location4.7 N & 2 E Mitchell
RouteCounty Highway 0
Coordinates43.77166, -97.98884
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating13.4 US tons
Inventory rating4.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width31 ft (9.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2022)
Projected traffic40 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 411th Avenue over Ck built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1965.

What condition is 411th 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 July 2024.

How much traffic does 411th Avenue over Ck carry?

About 40 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 411th Avenue over Ck?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 31 ft wide.

Who owns 411th Avenue over Ck?

It is owned by the County Highway Agency.