US Bridges

455 Avenue over Ck

PoorPosted for load

Codington County, South Dakota · 0.9 N JCT Sd 20 W · Structure no. 000000015190022

Built
1940
85 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
3 main spans
Daily traffic
672
2022 count
Owner
County
County Highway Agency

About this bridge

455 Avenue over Ck is a steel stringer/multi-beam or girder carrying 455 Avenue over Ck in Codington County, South Dakota. It was built in 1940, so it is 85 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 672 vehicles a day, roughly 2% of them trucks, projected to reach 840 by 2035. The structure is 68 ft (20.7 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries455 Avenue
CrossesCk
Location0.9 N JCT Sd 20 W
RouteCounty Highway 0
Coordinates45.12035, -97.10321
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37 US tons
Inventory rating21.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span22 ft (6.7 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic672 (2022)
Projected traffic840 by 2035
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$900,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 455 Avenue over Ck built?

It was built in 1940, making it 85 years old in 2025.

What condition is 455 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 2024.

How much traffic does 455 Avenue over Ck carry?

About 672 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 455 Avenue over Ck?

The structure is 68 ft (20.7 m) long with a longest span of 22 ft (6.7 m) and a deck 33 ft wide.

Who owns 455 Avenue over Ck?

It is owned by the County Highway Agency.