US Bridges

160th Avenue over Ck

Fair

Pennington County, South Dakota · 1.2E 4.8S Farmingdale · Structure no. 000000052600436

Built
1989
36 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
31 ft
1 main span
Daily traffic
74
2022 count
Owner
County
County Highway Agency

About this bridge

160th Avenue over Ck is a wood or timber stringer/multi-beam or girder carrying 160th Avenue over Ck in Pennington County, South Dakota. It was built in 1989, so it is 36 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 fair condition with a lowest component rating of 6 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 74 vehicles a day, roughly 3% of them trucks, projected to reach 74 by 2032. The structure is 31 ft (9.5 m) long and 24 ft wide. If it were closed, the detour would be 18 mi (29 km).

Carries160th Avenue
CrossesCk
Location1.2E 4.8S Farmingdale
RouteCounty Highway 0
Coordinates43.88798, -102.85805
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.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.4 US tons
Inventory rating28.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 10
Structure length31 ft (9.5 m)
Longest span30 ft (9.2 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74 (2022)
Projected traffic74 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 160th Avenue over Ck built?

It was built in 1989, making it 36 years old in 2025.

What condition is 160th Avenue 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 June 2023.

How much traffic does 160th Avenue over Ck carry?

About 74 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 160th Avenue over Ck?

The structure is 31 ft (9.5 m) long with a longest span of 30 ft (9.2 m) and a deck 24 ft wide.

Who owns 160th Avenue over Ck?

It is owned by the County Highway Agency.