US Bridges

Cth Bb over N Br Manitowoc River

Fair

Calumet County, Wisconsin · 1.2M N JCT Cth B · Structure no. B08001500000000

Built
1982
43 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
70 ft
2 main spans
Daily traffic
870
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Bb over N Br Manitowoc River is a concrete continuous slab carrying Cth Bb over N Br Manitowoc River in Calumet County, Wisconsin. It was built in 1982, so it is 43 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 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 870 vehicles a day, projected to reach 101 by 2043. The structure is 70 ft (21.3 m) long and 36 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesCth Bb
CrossesN Br Manitowoc River
Location1.2M N JCT Cth B
RouteCounty Highway 0BB
CountyCalumet County
StateWisconsin
Coordinates44.18472, -88.20389
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 protection8 Very GoodNo problems noted.
Last inspectionMay 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length70 ft (21.3 m)
Longest span34 ft (10.4 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic870 (2022)
Projected traffic101 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Bb over N Br Manitowoc River built?

It was built in 1982, making it 43 years old in 2025.

What condition is Cth Bb over N Br Manitowoc River 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 May 2024.

How much traffic does Cth Bb over N Br Manitowoc River carry?

About 870 vehicles per day (2022 count).

How long is Cth Bb over N Br Manitowoc River?

The structure is 70 ft (21.3 m) long with a longest span of 34 ft (10.4 m) and a deck 36 ft wide.

Who owns Cth Bb over N Br Manitowoc River?

It is owned by the County Highway Agency.