US Bridges

445 Ave (fas 6355) over I090

Poor

McCook County, South Dakota · 4 E US 81 Interchange · Structure no. 000000044150126

Built
1964
61 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
254 ft
4 main spans
Daily traffic
328
2023 count
Owner
State
State Highway Agency

About this bridge

445 Ave (fas 6355) over I090 is a steel continuous stringer/multi-beam or girder carrying 445 Ave (fas 6355) over I090 in McCook County, South Dakota. It was built in 1964, so it is 61 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 328 vehicles a day, roughly 3% of them trucks, projected to reach 328 by 2043. The structure is 254 ft (77.4 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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Carries445 Ave (fas 6355)
CrossesI090
Location4 E US 81 Interchange
RouteCounty Highway 0
CountyMcCook County
StateSouth Dakota
Coordinates43.66695, -97.30789
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.8 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length254 ft (77.4 m)
Longest span70 ft (21.3 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic328 (2023)
Projected traffic328 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$184,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was 445 Ave (fas 6355) over I090 built?

It was built in 1964, making it 61 years old in 2025.

What condition is 445 Ave (fas 6355) over I090 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does 445 Ave (fas 6355) over I090 carry?

About 328 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 445 Ave (fas 6355) over I090?

The structure is 254 ft (77.4 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.

Who owns 445 Ave (fas 6355) over I090?

It is owned by the State Highway Agency.