US Bridges

41760 248 Street over Rock Ck

Fair

Hanson County, South Dakota · 4 N & 1.4 W Fulton · Structure no. 000000031056040

Built
1930
95 years old, rebuilt 1970
Condition
Fair
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

41760 248 Street over Rock Ck is a prestressed concrete tee beam carrying 41760 248 Street over Rock Ck in Hanson County, South Dakota. It was built in 1930 and reconstructed in 1970, so it is 95 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 35 vehicles a day, roughly 2% of them trucks, projected to reach 35 by 2032. The structure is 50 ft (15.2 m) long and 23 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries41760 248 Street
CrossesRock Ck
Location4 N & 1.4 W Fulton
RouteCounty Highway 0
Coordinates43.78958, -97.85762
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length50 ft (15.2 m)
Longest span41 ft (12.5 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.8 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 closed6.2 mi (10 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$16,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 41760 248 Street over Rock Ck built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1970.

What condition is 41760 248 Street over Rock Ck in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does 41760 248 Street over Rock Ck carry?

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

How long is 41760 248 Street over Rock Ck?

The structure is 50 ft (15.2 m) long with a longest span of 41 ft (12.5 m) and a deck 23 ft wide.

Who owns 41760 248 Street over Rock Ck?

It is owned by the County Highway Agency.