US Bridges

161st Street over Creek

Poor

Spink County, South Dakota · 2.2E Turton · Structure no. 000000058322130

Built
1930
95 years old, rebuilt 1955
Condition
Poor
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
3 main spans
Daily traffic
91
2022 count
Owner
County
County Highway Agency

About this bridge

161st Street over Creek is a steel stringer/multi-beam or girder carrying 161st Street over Creek in Spink County, South Dakota. It was built in 1930 and reconstructed in 1955, so it is 95 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 91 vehicles a day, roughly 3% of them trucks, projected to reach 91 by 2032. The structure is 60 ft (18.3 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Carries161st Street
CrossesCreek
Location2.2E Turton
RouteCounty Highway 0
Coordinates45.05229, -98.05966
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 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 rating43.8 US tons
Inventory rating26.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 10
Structure length60 ft (18.3 m)
Longest span20 ft (6.1 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91 (2022)
Projected traffic91 by 2032
Trucks3%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 161st Street over Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1955.

What condition is 161st Street over Creek 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 2023.

How much traffic does 161st Street over Creek carry?

About 91 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 161st Street over Creek?

The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 27 ft wide.

Who owns 161st Street over Creek?

It is owned by the County Highway Agency.