US Bridges

47690 305 Str. over Ck

Fair

Union County, South Dakota · 7S & 4.9E Beresford · Structure no. 000000064069080

Built
1989
36 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
2 main spans
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

47690 305 Str. over Ck is a steel stringer/multi-beam or girder carrying 47690 305 Str. over Ck in Union County, South Dakota. It was built in 1989, so it is 36 years old, younger 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 6 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 15 vehicles a day, roughly 2% of them trucks, projected to reach 15 by 2032. The structure is 41 ft (12.4 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries47690 305 Str.
CrossesCk
Location7S & 4.9E Beresford
RouteCounty Highway 0
Coordinates42.96709, -96.66845
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.4 US tons
Inventory rating39.7 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans2
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span19 ft (5.9 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7.1 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 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 47690 305 Str. over Ck built?

It was built in 1989, making it 36 years old in 2025.

What condition is 47690 305 Str. over 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 August 2024.

How much traffic does 47690 305 Str. over Ck carry?

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

How long is 47690 305 Str. over Ck?

The structure is 41 ft (12.4 m) long with a longest span of 19 ft (5.9 m) and a deck 25 ft wide.

Who owns 47690 305 Str. over Ck?

It is owned by the County Highway Agency.