US Bridges

Cth Y/Mequon RD over IH 41/USH 45

Fair

Washington County, Wisconsin · 0.7 MI N JCT Sth 167 · Structure no. B66003400000000

Built
1969
56 years old, rebuilt 2023
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
563 ft
4 main spans
Daily traffic
4,400
2022 count
Owner
State
State Highway Agency

About this bridge

Cth Y/Mequon RD over IH 41/USH 45 is a steel continuous stringer/multi-beam or girder carrying Cth Y/Mequon RD over IH 41/USH 45 in Washington County, Wisconsin. It was built in 1969 and reconstructed in 2023, so it is 56 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 4,400 vehicles a day, projected to reach 5,400 by 2039. The structure is 563 ft (171.5 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesCth Y/Mequon RD
CrossesIH 41/USH 45
Location0.7 MI N JCT Sth 167
RouteCounty Highway 0Y
CountyWashington County
StateWisconsin
Coordinates43.22127, -88.15769
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
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 21 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum 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 rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length563 ft (171.5 m)
Longest span168 ft (51.2 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2022)
Projected traffic5,400 by 2039
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cth Y/Mequon RD over IH 41/USH 45 built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2023.

What condition is Cth Y/Mequon RD over IH 41/USH 45 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 December 2023.

How much traffic does Cth Y/Mequon RD over IH 41/USH 45 carry?

About 4,400 vehicles per day (2022 count).

How long is Cth Y/Mequon RD over IH 41/USH 45?

The structure is 563 ft (171.5 m) long with a longest span of 168 ft (51.2 m) and a deck 40 ft wide.

Who owns Cth Y/Mequon RD over IH 41/USH 45?

It is owned by the State Highway Agency.