US Bridges

Cth M over Mill Creek

Fair

Shawano County, Wisconsin · 0.7M W JCT Cth U · Structure no. B58072300000000

Built
1930
95 years old, rebuilt 1985
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
34 ft
1 main span
Daily traffic
650
2022 count
Owner
County
County Highway Agency

About this bridge

Cth M over Mill Creek is a concrete stringer/multi-beam or girder carrying Cth M over Mill Creek in Shawano County, Wisconsin. It was built in 1930 and reconstructed in 1985, so it is 95 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 5 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 650 vehicles a day, projected to reach 780 by 2042. The structure is 34 ft (10.5 m) long and 32 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

Location

Open in Google Maps
CarriesCth M
CrossesMill Creek
Location0.7M W JCT Cth U
RouteCounty Highway 0M
CountyShawano County
StateWisconsin
Coordinates44.76278, -88.77667
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.8 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length34 ft (10.5 m)
Longest span30 ft (9.2 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2022)
Projected traffic780 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed15.5 mi (25 km)
TollOn a free road
National Highway SystemNo

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 M over Mill Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1985.

What condition is Cth M over Mill Creek 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 September 2023.

How much traffic does Cth M over Mill Creek carry?

About 650 vehicles per day (2022 count).

How long is Cth M over Mill Creek?

The structure is 34 ft (10.5 m) long with a longest span of 30 ft (9.2 m) and a deck 32 ft wide.

Who owns Cth M over Mill Creek?

It is owned by the County Highway Agency.