US Bridges

Cth S over Unnamed Tributary of Mil

Good

Portage County, Wisconsin · 0.7 Miles South of Cth N · Structure no. B49018400000000

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
31 ft
1 main span
Daily traffic
616
2023 count
Owner
County
County Highway Agency

About this bridge

Cth S over Unnamed Tributary of Mil is a concrete slab carrying Cth S over Unnamed Tributary of Mil in Portage County, Wisconsin. It was built in 2017, so it is 8 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 616 vehicles a day, projected to reach 900 by 2042. The structure is 31 ft (9.3 m) long and 36 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCth S
CrossesUnnamed Tributary of Mil
Location0.7 Miles South of Cth N
RouteCounty Highway 0S
CountyPortage County
StateWisconsin
Coordinates44.5748, -89.8451
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length31 ft (9.3 m)
Longest span28 ft (8.5 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic616 (2023)
Projected traffic900 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 S over Unnamed Tributary of Mil built?

It was built in 2017, making it 8 years old in 2025.

What condition is Cth S over Unnamed Tributary of Mil in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Cth S over Unnamed Tributary of Mil carry?

About 616 vehicles per day (2023 count).

How long is Cth S over Unnamed Tributary of Mil?

The structure is 31 ft (9.3 m) long with a longest span of 28 ft (8.5 m) and a deck 36 ft wide.

Who owns Cth S over Unnamed Tributary of Mil?

It is owned by the County Highway Agency.