US Bridges

425th Ave over Redstone Ck

Good

Kingsbury County, South Dakota · 0.9 S Manchester · Structure no. 000000039070129

Built
1989
36 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
150
2022 count
Owner
County
County Highway Agency

About this bridge

425th Ave over Redstone Ck is a prestressed concrete stringer/multi-beam or girder carrying 425th Ave over Redstone Ck in Kingsbury 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 3% of them trucks, projected to reach 150 by 2036. The structure is 56 ft (17.1 m) long and 34 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Carries425th Ave
CrossesRedstone Ck
Location0.9 S Manchester
RouteCounty Highway 0
Coordinates44.35667, -97.71266
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating53.1 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span52 ft (15.8 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic150 by 2036
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 425th Ave over Redstone Ck built?

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

What condition is 425th Ave over Redstone Ck in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does 425th Ave over Redstone Ck carry?

About 150 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 425th Ave over Redstone Ck?

The structure is 56 ft (17.1 m) long with a longest span of 52 ft (15.8 m) and a deck 34 ft wide.

Who owns 425th Ave over Redstone Ck?

It is owned by the County Highway Agency.