US Bridges

28650 447th Ave over Ck

Good

Turner County, South Dakota · 12.5S Marion · Structure no. 000000063070185

Built
1998
27 years old
Condition
Good
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

28650 447th Ave over Ck is a prestressed concrete tee beam carrying 28650 447th Ave over Ck in Turner County, South Dakota. It was built in 1998, so it is 27 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 2% of them trucks, projected to reach 70 by 2032. The structure is 51 ft (15.6 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries28650 447th Ave
CrossesCk
Location12.5S Marion
RouteCounty Highway 0
Coordinates43.23475, -97.26057
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable 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 loadHS 20
Structure length51 ft (15.6 m)
Longest span51 ft (15.4 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic70 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$20,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 28650 447th Ave over Ck built?

It was built in 1998, making it 27 years old in 2025.

What condition is 28650 447th Ave over 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 September 2024.

How much traffic does 28650 447th Ave over Ck carry?

About 50 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 28650 447th Ave over Ck?

The structure is 51 ft (15.6 m) long with a longest span of 51 ft (15.4 m) and a deck 27 ft wide.

Who owns 28650 447th Ave over Ck?

It is owned by the County Highway Agency.