US Bridges

408th Avenue over Crow Creek Ditch

Fair

Brown County, South Dakota · 4.3E & 1.6S of Hecla · Structure no. 000000007320053

Built
1935
90 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
97
2022 count
Owner
County
County Highway Agency

About this bridge

408th Avenue over Crow Creek Ditch is a concrete continuous culvert carrying 408th Avenue over Crow Creek Ditch in Brown County, South Dakota. It was built in 1935, so it is 90 years old, older than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 97 vehicles a day, roughly 2% of them trucks, projected to reach 97 by 2032. The structure is 31 ft (9.4 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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Carries408th Avenue
CrossesCrow Creek Ditch
Location4.3E & 1.6S of Hecla
RouteCounty Highway 0
CountyBrown County
StateSouth Dakota
Coordinates45.85987, -98.06182
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97 (2022)
Projected traffic97 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 408th Avenue over Crow Creek Ditch built?

It was built in 1935, making it 90 years old in 2025.

What condition is 408th Avenue over Crow Creek Ditch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does 408th Avenue over Crow Creek Ditch carry?

About 97 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 408th Avenue over Crow Creek Ditch?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns 408th Avenue over Crow Creek Ditch?

It is owned by the County Highway Agency.