US Bridges

407th Avenue over Creek

Good

Brown County, South Dakota · 1E & 0.5N of Ferney · Structure no. 000000007310415

Built
2019
6 years old
Condition
Good
inspected July 2024
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
98
2022 count
Owner
County
County Highway Agency

About this bridge

407th Avenue over Creek is a steel culvert carrying 407th Avenue over Creek in Brown County, South Dakota. It was built in 2019, so it is 6 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 98 vehicles a day, roughly 2% of them trucks, projected to reach 98 by 2032. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Carries407th Avenue
CrossesCreek
Location1E & 0.5N of Ferney
Coordinates45.33454, -98.08358
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.1 US tons
Inventory rating41.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHL 93
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2022)
Projected traffic98 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 407th Avenue over Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is 407th Avenue over 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 2024.

How much traffic does 407th Avenue over Creek carry?

About 98 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 407th Avenue over Creek?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m).

Who owns 407th Avenue over Creek?

It is owned by the County Highway Agency.