US Bridges

177th ST over Ck

PoorClosed to traffic

Spink County, South Dakota · 4S 7.5W Redfield · Structure no. 000000058015290

Built
1935
90 years old
Condition
Poor
inspected August 2010
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
3 main spans
Daily traffic
55
2022 count
Owner
County
County Highway Agency

About this bridge

177th ST over Ck is a steel stringer/multi-beam or girder carrying 177th ST over Ck in Spink 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 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: closed to all traffic.

It carries about 55 vehicles a day, roughly 2% of them trucks, projected to reach 55 by 2032. The structure is 60 ft (18.3 m) long and 19 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Carries177th ST
CrossesCk
Location4S 7.5W Redfield
RouteCounty Highway 0
Coordinates44.82235, -98.67471
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
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 inspectionAugust 2010
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating22.9 US tons
Inventory rating13.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span19 ft (5.8 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2022)
Projected traffic55 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$248,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 177th ST over Ck built?

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

What condition is 177th ST 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 August 2010.

How much traffic does 177th ST over Ck carry?

About 55 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 177th ST over Ck?

The structure is 60 ft (18.3 m) long with a longest span of 19 ft (5.8 m) and a deck 19 ft wide.

Who owns 177th ST over Ck?

It is owned by the County Highway Agency.