US Bridges

461 Ave over Ck

Poor

Lake County, South Dakota · 0.9W & 3.8S Wentworth · Structure no. 000000040191178

Built
1950
75 years old
Condition
Poor
inspected August 2023
Type
Culvert
Concrete Continuous
Length
26 ft
3 main spans
Daily traffic
580
2022 count
Owner
County
County Highway Agency

About this bridge

461 Ave over Ck is a concrete continuous culvert carrying 461 Ave over Ck in Lake County, South Dakota. It was built in 1950, 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 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 580 vehicles a day, roughly 2% of them trucks, projected to reach 640 by 2032. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
Carries461 Ave
CrossesCk
Location0.9W & 3.8S Wentworth
RouteCounty Highway 0
CountyLake County
StateSouth Dakota
Coordinates43.939, -96.98747
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic580 (2022)
Projected traffic640 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$10,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 461 Ave over Ck built?

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

What condition is 461 Ave 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 August 2023.

How much traffic does 461 Ave over Ck carry?

About 580 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 461 Ave over Ck?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m).

Who owns 461 Ave over Ck?

It is owned by the County Highway Agency.