US Bridges

Cth K over Kelly Brook

Fair

Oconto County, Wisconsin · 0.3M N JCT Cth a · Structure no. P42092000000000

Built
1992
33 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
35 ft
3 main spans
Daily traffic
320
2022 count
Owner
County
County Highway Agency

About this bridge

Cth K over Kelly Brook is a steel culvert carrying Cth K over Kelly Brook in Oconto County, Wisconsin. It was built in 1992, so it is 33 years old, younger 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 6 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 320 vehicles a day, projected to reach 384 by 2042. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCth K
CrossesKelly Brook
Location0.3M N JCT Cth a
RouteCounty Highway 0K
CountyOconto County
StateWisconsin
Coordinates44.96568, -88.21542
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckCorrugated steel
Main spans3
Design loadHS 15
Structure length35 ft (10.7 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2022)
Projected traffic384 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 K over Kelly Brook built?

It was built in 1992, making it 33 years old in 2025.

What condition is Cth K over Kelly Brook 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 K over Kelly Brook carry?

About 320 vehicles per day (2022 count).

How long is Cth K over Kelly Brook?

The structure is 35 ft (10.7 m) long with a longest span of 9 ft (2.7 m).

Who owns Cth K over Kelly Brook?

It is owned by the County Highway Agency.