US Bridges

28550 421 Ave. over Ck

Poor

Hutchinson County, South Dakota · 5 W & 0.5 N Olivet · Structure no. 000000034170175

Built
1978
47 years old
Condition
Poor
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
69
2022 count
Owner
County
County Highway Agency

About this bridge

28550 421 Ave. over Ck is a prestressed concrete tee beam carrying 28550 421 Ave. over Ck in Hutchinson County, South Dakota. It was built in 1978, so it is 47 years old, younger 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 69 vehicles a day, roughly 2% of them trucks, projected to reach 69 by 2032. The structure is 51 ft (15.5 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries28550 421 Ave.
CrossesCk
Location5 W & 0.5 N Olivet
RouteCounty Highway 0
Coordinates43.24894, -97.77694
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length51 ft (15.5 m)
Longest span49 ft (14.9 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69 (2022)
Projected traffic69 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$392,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 28550 421 Ave. over Ck built?

It was built in 1978, making it 47 years old in 2025.

What condition is 28550 421 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 May 2024.

How much traffic does 28550 421 Ave. over Ck carry?

About 69 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 28550 421 Ave. over Ck?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 31 ft wide.

Who owns 28550 421 Ave. over Ck?

It is owned by the County Highway Agency.