US Bridges

161 Street over S Fork Yellow Bank River

PoorPosted for load

Grant County, South Dakota · 4.4E Albee · Structure no. 000000026374190

Built
1940
85 years old, rebuilt 1965
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
69 ft
4 main spans
Daily traffic
52
2022 count
Owner
County
County Highway Agency

About this bridge

161 Street over S Fork Yellow Bank River is a wood or timber stringer/multi-beam or girder carrying 161 Street over S Fork Yellow Bank River in Grant County, South Dakota. It was built in 1940 and reconstructed in 1965, so it is 85 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: posted for load restriction.

It carries about 52 vehicles a day, roughly 2% of them trucks, projected to reach 52 by 2032. The structure is 69 ft (21 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries161 Street
CrossesS Fork Yellow Bank River
Location4.4E Albee
RouteCounty Highway 0
Coordinates45.05011, -96.46778
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 alignment8: Equal to present desirable criteria
Operating rating18 US tons
Inventory rating12 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadUnknown
Structure length69 ft (21 m)
Longest span17 ft (5.2 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52 (2022)
Projected traffic52 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$800,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 161 Street over S Fork Yellow Bank River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1965.

What condition is 161 Street over S Fork Yellow Bank River 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 September 2024.

How much traffic does 161 Street over S Fork Yellow Bank River carry?

About 52 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 161 Street over S Fork Yellow Bank River?

The structure is 69 ft (21 m) long with a longest span of 17 ft (5.2 m) and a deck 24 ft wide.

Who owns 161 Street over S Fork Yellow Bank River?

It is owned by the County Highway Agency.