US Bridges

Cth G over IH 41

Fair

Winnebago County, Wisconsin · 1.4M W JCT Cth a · Structure no. B70006700000000

Built
1975
50 years old, rebuilt 2013
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
442 ft
4 main spans
Daily traffic
1,700
2023 count
Owner
State
State Highway Agency

About this bridge

Cth G over IH 41 is a steel continuous stringer/multi-beam or girder carrying Cth G over IH 41 in Winnebago County, Wisconsin. It was built in 1975 and reconstructed in 2013, so it is 50 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 1,700 vehicles a day, roughly 9% of them trucks, projected to reach 92,510 by 2042. The structure is 442 ft (134.6 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCth G
CrossesIH 41
Location1.4M W JCT Cth a
RouteCounty Highway 0G
CountyWinnebago County
StateWisconsin
Coordinates44.14179, -88.49111
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length442 ft (134.6 m)
Longest span119 ft (36.3 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2023)
Projected traffic92,510 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed5 mi (8 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 G over IH 41 built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2013.

What condition is Cth G over IH 41 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 June 2023.

How much traffic does Cth G over IH 41 carry?

About 1,700 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Cth G over IH 41?

The structure is 442 ft (134.6 m) long with a longest span of 119 ft (36.3 m) and a deck 42 ft wide.

Who owns Cth G over IH 41?

It is owned by the State Highway Agency.