US Bridges

Cth N over Bear Creek

Fair

Sauk County, Wisconsin · 0.1M E JCT Sth 130 · Structure no. B56006000000000

Built
1978
47 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
92 ft
2 main spans
Daily traffic
230
2024 count
Owner
County
County Highway Agency

About this bridge

Cth N over Bear Creek is a concrete continuous slab carrying Cth N over Bear Creek in Sauk 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 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 230 vehicles a day, projected to reach 276 by 2041. The structure is 92 ft (28 m) long and 30 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesCth N
CrossesBear Creek
Location0.1M E JCT Sth 130
RouteCounty Highway 0N
CountySauk County
StateWisconsin
Coordinates43.32729, -90.17589
Functional classRural Major 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
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 protection7 GoodSome minor problems.
Last inspectionOctober 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 adequacy6: Equal to present minimum 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 length92 ft (28 m)
Longest span45 ft (13.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2024)
Projected traffic276 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 N over Bear Creek built?

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

What condition is Cth N over Bear 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 October 2024.

How much traffic does Cth N over Bear Creek carry?

About 230 vehicles per day (2024 count).

How long is Cth N over Bear Creek?

The structure is 92 ft (28 m) long with a longest span of 45 ft (13.7 m) and a deck 30 ft wide.

Who owns Cth N over Bear Creek?

It is owned by the County Highway Agency.