US Bridges

368th Ave over Little Turtle Ck

PoorPosted for load

Hand County, South Dakota · 8E & 6.2N Miller · Structure no. 000000030240188

Built
1928
97 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

368th Ave over Little Turtle Ck is a steel stringer/multi-beam or girder carrying 368th Ave over Little Turtle Ck in Hand County, South Dakota. It was built in 1928, so it is 97 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 15 vehicles a day, roughly 2% of them trucks, projected to reach 15 by 2032. The structure is 22 ft (6.7 m) long and 21 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Carries368th Ave
CrossesLittle Turtle Ck
Location8E & 6.2N Miller
RouteCounty Highway 0
Coordinates44.62231, -98.82603
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating23.8 US tons
Inventory rating14.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width21 ft (6.3 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$281,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 368th Ave over Little Turtle Ck built?

It was built in 1928, making it 97 years old in 2025.

What condition is 368th Ave over Little Turtle 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 368th Ave over Little Turtle Ck carry?

About 15 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 368th Ave over Little Turtle Ck?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 21 ft wide.

Who owns 368th Ave over Little Turtle Ck?

It is owned by the County Highway Agency.