US Bridges

411th Avenue over Enemy Ck

Good

Davison County, South Dakota · 4.1S 2.0E Mitchell · Structure no. 000000018170141

Built
2021
4 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
64
2022 count
Owner
County
County Highway Agency

About this bridge

411th Avenue over Enemy Ck is a prestressed concrete stringer/multi-beam or girder carrying 411th Avenue over Enemy Ck in Davison County, South Dakota. It was built in 2021, so it is 4 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 64 vehicles a day, roughly 2% of them trucks, projected to reach 64 by 2032. The structure is 106 ft (32.3 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries411th Avenue
CrossesEnemy Ck
Location4.1S 2.0E Mitchell
RouteCounty Highway 0
Coordinates43.64235, -97.98625
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating69.1 US tons
Inventory rating46.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length106 ft (32.3 m)
Longest span101 ft (30.7 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic64 (2022)
Projected traffic64 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 411th Avenue over Enemy Ck built?

It was built in 2021, making it 4 years old in 2025.

What condition is 411th Avenue over Enemy 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 August 2024.

How much traffic does 411th Avenue over Enemy Ck carry?

About 64 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 411th Avenue over Enemy Ck?

The structure is 106 ft (32.3 m) long with a longest span of 101 ft (30.7 m) and a deck 31 ft wide.

Who owns 411th Avenue over Enemy Ck?

It is owned by the County Highway Agency.