US Bridges

Cth a over Silver Creek

Fair

Green Lake County, Wisconsin · 1.2M N JCT Cth K · Structure no. B24000500000000

Built
1958
67 years old
Condition
Fair
inspected September 2023
Type
Frame
Concrete
Length
30 ft
1 main span
Daily traffic
3,200
2021 count
Owner
County
County Highway Agency

About this bridge

Cth a over Silver Creek is a concrete frame carrying Cth a over Silver Creek in Green Lake County, Wisconsin. It was built in 1958, so it is 67 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 3,200 vehicles a day, projected to reach 3,840 by 2041. The structure is 30 ft (9.2 m) long and 39 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

Location

Open in Google Maps
CarriesCth a
CrossesSilver Creek
Location1.2M N JCT Cth K
RouteCounty Highway 0A
CountyGreen Lake County
StateWisconsin
Coordinates43.82438, -88.92652
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.2 m)
Longest span29 ft (8.9 m)
Deck width39 ft (11.9 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2021)
Projected traffic3,840 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed15.5 mi (25 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 a over Silver Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Cth a over Silver 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 September 2023.

How much traffic does Cth a over Silver Creek carry?

About 3,200 vehicles per day (2021 count).

How long is Cth a over Silver Creek?

The structure is 30 ft (9.2 m) long with a longest span of 29 ft (8.9 m) and a deck 39 ft wide.

Who owns Cth a over Silver Creek?

It is owned by the County Highway Agency.