US Bridges

104th Street over Little Minnesota River

PoorPosted for load

Roberts County, South Dakota · 1W & 1.5N of Claire City · Structure no. 000000055052040

Built
1967
58 years old
Condition
Poor
inspected August 2024
Type
Channel Beam
Concrete
Length
25 ft
1 main span
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

104th Street over Little Minnesota River is a concrete channel beam carrying 104th Street over Little Minnesota River in Roberts County, South Dakota. It was built in 1967, so it is 58 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 35 vehicles a day, roughly 2% of them trucks, projected to reach 35 by 2032. The structure is 25 ft (7.6 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries104th Street
CrossesLittle Minnesota River
Location1W & 1.5N of Claire City
Coordinates45.87743, -97.12085
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating27 US tons
Inventory rating20.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2022)
Projected traffic35 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$797,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 104th Street over Little Minnesota River built?

It was built in 1967, making it 58 years old in 2025.

What condition is 104th Street over Little Minnesota 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 August 2024.

How much traffic does 104th Street over Little Minnesota River carry?

About 35 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 104th Street over Little Minnesota River?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 25 ft wide.

Who owns 104th Street over Little Minnesota River?

It is owned by the County Highway Agency.