US Bridges

Cth Es (main St) over Mukwonago River

Fair

Waukesha County, Wisconsin · 0.4M S JCT Sth 83 · Structure no. B67020400000000

Built
1984
41 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
38 ft
1 main span
Daily traffic
6,200
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Es (main St) over Mukwonago River is a concrete slab carrying Cth Es (main St) over Mukwonago River in Waukesha County, Wisconsin. It was built in 1984, so it is 41 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 6,200 vehicles a day, projected to reach 7,440 by 2042. The structure is 38 ft (11.5 m) long and 51 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

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CarriesCth Es (main St)
CrossesMukwonago River
Location0.4M S JCT Sth 83
RouteCounty Highway 0ES
CountyWaukesha County
StateWisconsin
Coordinates42.85609, -88.33221
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length38 ft (11.5 m)
Longest span36 ft (11 m)
Deck width51 ft (15.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,200 (2022)
Projected traffic7,440 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed12.4 mi (20 km)
TollOn a free road
National Highway SystemYes

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 Cth Es (main St) over Mukwonago River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Cth Es (main St) over Mukwonago River 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 October 2024.

How much traffic does Cth Es (main St) over Mukwonago River carry?

About 6,200 vehicles per day (2022 count).

How long is Cth Es (main St) over Mukwonago River?

The structure is 38 ft (11.5 m) long with a longest span of 36 ft (11 m) and a deck 51 ft wide.

Who owns Cth Es (main St) over Mukwonago River?

It is owned by the County Highway Agency.