US Bridges

Cth K (20th Ave) over IH 41

Good

Winnebago County, Wisconsin · At IH 41 · Structure no. B70028200000000

Built
2010
15 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
244 ft
2 main spans
Daily traffic
11,200
2023 count
Owner
State
State Highway Agency

About this bridge

Cth K (20th Ave) over IH 41 is a concrete continuous stringer/multi-beam or girder carrying Cth K (20th Ave) over IH 41 in Winnebago County, Wisconsin. It was built in 2010, so it is 15 years old, younger than the Wisconsin average of 40.3 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 11,200 vehicles a day, projected to reach 23,700 by 2042. The structure is 244 ft (74.3 m) long and 66 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCth K (20th Ave)
CrossesIH 41
LocationAt IH 41
RouteCounty Highway 0K
CountyWinnebago County
StateWisconsin
Coordinates43.99637, -88.58297
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length244 ft (74.3 m)
Longest span130 ft (39.6 m)
Deck width66 ft (20.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,200 (2023)
Projected traffic23,700 by 2042
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cth K (20th Ave) over IH 41 built?

It was built in 2010, making it 15 years old in 2025.

What condition is Cth K (20th Ave) over IH 41 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 June 2023.

How much traffic does Cth K (20th Ave) over IH 41 carry?

About 11,200 vehicles per day (2023 count).

How long is Cth K (20th Ave) over IH 41?

The structure is 244 ft (74.3 m) long with a longest span of 130 ft (39.6 m) and a deck 66 ft wide.

Who owns Cth K (20th Ave) over IH 41?

It is owned by the State Highway Agency.