US Bridges

Cth M over Mill Creek

Fair

Monroe County, Wisconsin · 0.4M W JCT Ush 12 · Structure no. P41008600000000

Built
1980
45 years old
Condition
Fair
inspected July 2024
Type
Slab
Wood or Timber
Length
25 ft
1 main span
Daily traffic
316
2022 count
Owner
County
County Highway Agency

About this bridge

Cth M over Mill Creek is a wood or timber slab carrying Cth M over Mill Creek in Monroe County, Wisconsin. It was built in 1980, so it is 45 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 316 vehicles a day, projected to reach 347 by 2043. The structure is 25 ft (7.5 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCth M
CrossesMill Creek
Location0.4M W JCT Ush 12
RouteCounty Highway 0M
Coordinates44.0738, -90.5368
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating48.2 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length25 ft (7.5 m)
Longest span23 ft (7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic316 (2022)
Projected traffic347 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 1980, making it 45 years old in 2025.

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 July 2024.

How much traffic does Cth M over Mill Creek carry?

About 316 vehicles per day (2022 count).

How long is Cth M over Mill Creek?

The structure is 25 ft (7.5 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.

Who owns Cth M over Mill Creek?

It is owned by the County Highway Agency.