US Bridges

361st Ave over Wolf Ck

PoorPosted for load

Hand County, South Dakota · 7.5N & 1E Miller · Structure no. 000000030170185

Built
1913
112 years old
Condition
Poor
inspected July 2024
Type
Truss - Thru
Steel
Length
41 ft
1 main span
Daily traffic
43
2022 count
Owner
County
County Highway Agency

About this bridge

361st Ave over Wolf Ck is a steel truss - thru carrying 361st Ave over Wolf Ck in Hand County, South Dakota. It was built in 1913, so it is 112 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 3 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 43 vehicles a day, roughly 2% of them trucks, projected to reach 43 by 2032. The structure is 41 ft (12.5 m) long and 18 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries361st Ave
CrossesWolf Ck
Location7.5N & 1E Miller
RouteCounty Highway 0
Coordinates44.6275, -98.9679
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating8 US tons
Inventory rating4.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43 (2022)
Projected traffic43 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$378,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 361st Ave over Wolf Ck built?

It was built in 1913, making it 112 years old in 2025.

What condition is 361st Ave over Wolf 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 July 2024.

How much traffic does 361st Ave over Wolf Ck carry?

About 43 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 361st Ave over Wolf Ck?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 18 ft wide.

Who owns 361st Ave over Wolf Ck?

It is owned by the County Highway Agency.