US Bridges

Cth Z over N Br Crawfish River

Poor

Columbia County, Wisconsin · 0.8M W JCT Cth Cd · Structure no. P11090900000000

Built
1966
59 years old
Condition
Poor
inspected August 2024
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
99
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Z over N Br Crawfish River is a wood or timber slab carrying Cth Z over N Br Crawfish River in Columbia County, Wisconsin. It was built in 1966, so it is 59 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 99 vehicles a day, projected to reach 108 by 2043. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesCth Z
CrossesN Br Crawfish River
Location0.8M W JCT Cth Cd
RouteCounty Highway 0Z
CountyColumbia County
StateWisconsin
Coordinates43.42832, -89.0893
Functional classRural Minor 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
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width28 ft (8.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2022)
Projected traffic108 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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$177,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Z over N Br Crawfish River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Cth Z over N Br Crawfish River 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 August 2024.

How much traffic does Cth Z over N Br Crawfish River carry?

About 99 vehicles per day (2022 count).

How long is Cth Z over N Br Crawfish River?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 28 ft wide.

Who owns Cth Z over N Br Crawfish River?

It is owned by the County Highway Agency.