US Bridges

397th Avenue over Enemy Creek

Good

Davison County, South Dakota · 4.4 S Mount Vernon · Structure no. 000000018030144

Built
2021
4 years old
Condition
Good
inspected July 2022
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
416
2022 count
Owner
County
County Highway Agency

About this bridge

397th Avenue over Enemy Creek is a concrete continuous culvert carrying 397th Avenue over Enemy Creek 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 416 vehicles a day, roughly 3% of them trucks, projected to reach 416 by 2032. The structure is 25 ft (7.6 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Carries397th Avenue
CrossesEnemy Creek
Location4.4 S Mount Vernon
RouteCounty Highway 0
Coordinates43.63814, -98.26586
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating56.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width24 ft (7.3 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic416 (2022)
Projected traffic416 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 397th Avenue over Enemy Creek built?

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

What condition is 397th Avenue over Enemy Creek 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 2022.

How much traffic does 397th Avenue over Enemy Creek carry?

About 416 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 397th Avenue over Enemy Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 24 ft wide.

Who owns 397th Avenue over Enemy Creek?

It is owned by the County Highway Agency.