US Bridges

Cth C over Otter Creek

Good

Sauk County, Wisconsin · 1.2M W JCT Ush 12 · Structure no. B56013000000000

Built
1996
29 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete
Length
37 ft
1 main span
Daily traffic
550
2024 count
Owner
County
County Highway Agency

About this bridge

Cth C over Otter Creek is a concrete slab carrying Cth C over Otter Creek in Sauk County, Wisconsin. It was built in 1996, so it is 29 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 550 vehicles a day, roughly 7% of them trucks, projected to reach 660 by 2041. The structure is 37 ft (11.4 m) long and 32 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesCth C
CrossesOtter Creek
Location1.2M W JCT Ush 12
RouteCounty Highway 0C
Coordinates43.35814, -89.79167
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span35 ft (10.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2024)
Projected traffic660 by 2041
Trucks7%
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 C over Otter Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Cth C over Otter Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Cth C over Otter Creek carry?

About 550 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Cth C over Otter Creek?

The structure is 37 ft (11.4 m) long with a longest span of 35 ft (10.7 m) and a deck 32 ft wide.

Who owns Cth C over Otter Creek?

It is owned by the County Highway Agency.