45390 280 ST over Ck

Fair

Turner County, South Dakota · 5 S 0.6 E Parker · Structure no. 000000063139120

Built: 1935; 90 years old
Condition: Fair; inspected August 2023
Type: Slab; Concrete Continuous
Length: 35 ft; 3 main spans
Daily traffic: 403; 2022 count
Owner: County; County Highway Agency

About this bridge

45390 280 ST over Ck is a concrete continuous slab carrying 45390 280 ST over Ck in Turner County, South Dakota. It was built in 1935, 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 403 vehicles a day, roughly 3% of them trucks, projected to reach 403 by 2032. The structure is 35 ft (10.6 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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Carries45390 280 ST

CrossesCk

Location5 S 0.6 E Parker

RouteCounty Highway 0

CountyTurner County

StateSouth Dakota

Coordinates43.32954, -97.1245

Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

Component	Rating	Meaning
Deck	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionAugust 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourScour critical; foundations unstable for calculated scour conditions

Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is

Deck geometry6: Equal to present minimum criteria

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating44 US tons

Inventory rating28 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length35 ft (10.6 m)

Longest span10 ft (3 m)

Deck width33 ft (10.1 m)

Roadway width31 ft (9.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic403 (2022)

Projected traffic403 by 2032

Trucks3%

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$394,000

NavigationNo navigation control on waterway

Frequently asked questions

When was 45390 280 ST over Ck built?

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

What condition is 45390 280 ST over Ck in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does 45390 280 ST over Ck carry?

About 403 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 45390 280 ST over Ck?

The structure is 35 ft (10.6 m) long with a longest span of 10 ft (3 m) and a deck 33 ft wide.

Who owns 45390 280 ST over Ck?

It is owned by the County Highway Agency.