US Bridges

Cth D over Silver Creek

Fair

Kewaunee County, Wisconsin · 0.9M N JCT Cth S · Structure no. B31000600000000

Built
1954
71 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
364
2022 count
Owner
County
County Highway Agency

About this bridge

Cth D over Silver Creek is a steel stringer/multi-beam or girder carrying Cth D over Silver Creek in Kewaunee County, Wisconsin. It was built in 1954, so it is 71 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 364 vehicles a day, projected to reach 400 by 2043. The structure is 56 ft (17.2 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCth D
CrossesSilver Creek
Location0.9M N JCT Cth S
RouteCounty Highway 0D
CountyKewaunee County
StateWisconsin
Coordinates44.63036, -87.50092
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.6 US tons
Inventory rating23.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length56 ft (17.2 m)
Longest span56 ft (17.2 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic364 (2022)
Projected traffic400 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 D over Silver Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Cth D 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 June 2024.

How much traffic does Cth D over Silver Creek carry?

About 364 vehicles per day (2022 count).

How long is Cth D over Silver Creek?

The structure is 56 ft (17.2 m) long with a longest span of 56 ft (17.2 m) and a deck 27 ft wide.

Who owns Cth D over Silver Creek?

It is owned by the County Highway Agency.