US Bridges

Cth Z over Billings Creek

Poor

Monroe County, Wisconsin · 2.8M S JCT Cth P to E · Structure no. P41013400000000

Built
1978
47 years old
Condition
Poor
inspected June 2024
Type
Channel Beam
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
54
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Z over Billings Creek is a prestressed concrete channel beam carrying Cth Z over Billings Creek in Monroe County, Wisconsin. It was built in 1978, so it is 47 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 3 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 54 vehicles a day, projected to reach 59 by 2043. The structure is 52 ft (16 m) long and 30 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesCth Z
CrossesBillings Creek
Location2.8M S JCT Cth P to E
RouteCounty Highway 0Z
CountyMonroe County
StateWisconsin
Coordinates43.73302, -90.49188
Functional classRural Local

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.6 US tons
Inventory rating16.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length52 ft (16 m)
Longest span52 ft (15.7 m)
Deck width30 ft (9.2 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54 (2022)
Projected traffic59 by 2043
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$236,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Z over Billings Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Cth Z over Billings 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 June 2024.

How much traffic does Cth Z over Billings Creek carry?

About 54 vehicles per day (2022 count).

How long is Cth Z over Billings Creek?

The structure is 52 ft (16 m) long with a longest span of 52 ft (15.7 m) and a deck 30 ft wide.

Who owns Cth Z over Billings Creek?

It is owned by the County Highway Agency.