US Bridges

405th Avenue over Firesteel Ck

Fair

Davison County, South Dakota · 2 S Loomis · Structure no. 000000018110056

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Channel Beam
Concrete
Length
91 ft
3 main spans
Daily traffic
218
2022 count
Owner
County
County Highway Agency

About this bridge

405th Avenue over Firesteel Ck is a concrete channel beam carrying 405th Avenue over Firesteel Ck in Davison County, South Dakota. It was built in 1967, so it is 58 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 218 vehicles a day, roughly 3% of them trucks, projected to reach 218 by 2032. The structure is 91 ft (27.7 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries405th Avenue
CrossesFiresteel Ck
Location2 S Loomis
RouteCounty Highway 0
Coordinates43.76653, -98.10601
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadUnknown
Structure length91 ft (27.7 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic218 (2022)
Projected traffic218 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 405th Avenue over Firesteel Ck built?

It was built in 1967, making it 58 years old in 2025.

What condition is 405th Avenue over Firesteel Ck 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 July 2024.

How much traffic does 405th Avenue over Firesteel Ck carry?

About 218 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 405th Avenue over Firesteel Ck?

The structure is 91 ft (27.7 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns 405th Avenue over Firesteel Ck?

It is owned by the County Highway Agency.