US Bridges

Cth Z (hill Road) over Plum Creek

Poor

Brown County, Wisconsin · 1.0M E JCT Cth D · Structure no. B05011800000000

Built
1969
56 years old
Condition
Poor
inspected September 2024
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
1,100
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Z (hill Road) over Plum Creek is a concrete continuous culvert carrying Cth Z (hill Road) over Plum Creek in Brown County, Wisconsin. It was built in 1969, so it is 56 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,100 vehicles a day, projected to reach 1,320 by 2042. The structure is 32 ft (9.9 m) long. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesCth Z (hill Road)
CrossesPlum Creek
Location1.0M E JCT Cth D
RouteCounty Highway 0Z
CountyBrown County
StateWisconsin
Coordinates44.27001, -88.15233
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length32 ft (9.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2022)
Projected traffic1,320 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$230,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Z (hill Road) over Plum Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Cth Z (hill Road) over Plum Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Cth Z (hill Road) over Plum Creek carry?

About 1,100 vehicles per day (2022 count).

How long is Cth Z (hill Road) over Plum Creek?

The structure is 32 ft (9.9 m) long with a longest span of 10 ft (3 m).

Who owns Cth Z (hill Road) over Plum Creek?

It is owned by the County Highway Agency.