US Bridges

Cth Z over German Valley Creek

Fair

Dane County, Wisconsin · 1.6M N JCT Sth 78 · Structure no. P13090600000000

Built
1932
93 years old, rebuilt 1975
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
22 ft
1 main span
Daily traffic
145
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Z over German Valley Creek is a wood or timber slab carrying Cth Z over German Valley Creek in Dane County, Wisconsin. It was built in 1932 and reconstructed in 1975, so it is 93 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 145 vehicles a day, projected to reach 190 by 2045. The structure is 22 ft (6.7 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCth Z
CrossesGerman Valley Creek
Location1.6M N JCT Sth 78
RouteCounty Highway 0Z
CountyDane County
StateWisconsin
Coordinates42.94158, -89.82922
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckOther
Main spans1
Design loadHL 93
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic145 (2022)
Projected traffic190 by 2045
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 Z over German Valley Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1975.

What condition is Cth Z over German Valley 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 September 2024.

How much traffic does Cth Z over German Valley Creek carry?

About 145 vehicles per day (2022 count).

How long is Cth Z over German Valley Creek?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 24 ft wide.

Who owns Cth Z over German Valley Creek?

It is owned by the County Highway Agency.