US Bridges

Cth Cs over Silver Creek

PoorPosted for load

Manitowoc County, Wisconsin · 1.2M N JCT Ush 151 · Structure no. P36014500000000

Built
1969
56 years old
Condition
Poor
inspected November 2024
Type
Channel Beam
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
1,800
2021 count
Owner
County
County Highway Agency

About this bridge

Cth Cs over Silver Creek is a prestressed concrete channel beam carrying Cth Cs over Silver Creek in Manitowoc County, Wisconsin. It was built in 1969, so it is 56 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. Its operating status is: posted for load restriction.

It carries about 1,800 vehicles a day, projected to reach 2,160 by 2041. The structure is 34 ft (10.5 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesCth Cs
CrossesSilver Creek
Location1.2M N JCT Ush 151
RouteCounty Highway 0CS
Coordinates44.08228, -87.74657
Functional classRural Local

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.6 US tons
Inventory rating16.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length34 ft (10.5 m)
Longest span33 ft (10.1 m)
Deck width33 ft (10.1 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2021)
Projected traffic2,160 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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$239,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Cs over Silver Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Cth Cs over Silver Creek 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 November 2024.

How much traffic does Cth Cs over Silver Creek carry?

About 1,800 vehicles per day (2021 count).

How long is Cth Cs over Silver Creek?

The structure is 34 ft (10.5 m) long with a longest span of 33 ft (10.1 m) and a deck 33 ft wide.

Who owns Cth Cs over Silver Creek?

It is owned by the County Highway Agency.