US Bridges

Cth a over Kelly Brook

Good

Oconto County, Wisconsin · 0.2M E JCT Cth K · Structure no. B42008100000000

Built
2002
23 years old
Condition
Good
inspected October 2024
Type
Culvert
Steel
Length
36 ft
3 main spans
Daily traffic
540
2022 count
Owner
County
County Highway Agency

About this bridge

Cth a over Kelly Brook is a steel culvert carrying Cth a over Kelly Brook in Oconto County, Wisconsin. It was built in 2002, so it is 23 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 540 vehicles a day, roughly 10% of them trucks, projected to reach 648 by 2042. The structure is 36 ft (11 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesCth a
CrossesKelly Brook
Location0.2M E JCT Cth K
RouteCounty Highway 0A
Coordinates44.96038, -88.21331
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (11 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 traffic540 (2022)
Projected traffic648 by 2042
Trucks10%
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 a over Kelly Brook built?

It was built in 2002, making it 23 years old in 2025.

What condition is Cth a over Kelly Brook 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 October 2024.

How much traffic does Cth a over Kelly Brook carry?

About 540 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Cth a over Kelly Brook?

The structure is 36 ft (11 m) long with a longest span of 9 ft (2.7 m).

Who owns Cth a over Kelly Brook?

It is owned by the County Highway Agency.