US Bridges

Cth G over Mill Creek

Fair

Portage County, Wisconsin · 2.1M S JCT Cty P · Structure no. B49007900000000

Built
1991
34 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
42 ft
1 main span
Daily traffic
174
2023 count
Owner
County
County Highway Agency

About this bridge

Cth G over Mill Creek is a concrete slab carrying Cth G over Mill Creek in Portage County, Wisconsin. It was built in 1991, so it is 34 years old, younger 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 174 vehicles a day, projected to reach 184 by 2042. The structure is 42 ft (12.7 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesCth G
CrossesMill Creek
Location2.1M S JCT Cty P
RouteCounty Highway 0G
CountyPortage County
StateWisconsin
Coordinates44.56315, -89.77762
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
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.7 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic174 (2023)
Projected traffic184 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 G over Mill Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Cth G 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 August 2023.

How much traffic does Cth G over Mill Creek carry?

About 174 vehicles per day (2023 count).

How long is Cth G over Mill Creek?

The structure is 42 ft (12.7 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns Cth G over Mill Creek?

It is owned by the County Highway Agency.