US Bridges

Cth D over Br Rock River

Good

Rock County, Wisconsin · 2.5M N JCT Cth Q · Structure no. B53005500000000

Built
1959
66 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
3,331
2024 count
Owner
County
County Highway Agency

About this bridge

Cth D over Br Rock River is a concrete continuous culvert carrying Cth D over Br Rock River in Rock County, Wisconsin. It was built in 1959, so it is 66 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,331 vehicles a day, projected to reach 3,554 by 2043. The structure is 26 ft (8 m) long. If it were closed, the detour would be 15.5 mi (25 km).

Location

Open in Google Maps
CarriesCth D
CrossesBr Rock River
Location2.5M N JCT Cth Q
RouteCounty Highway 0D
CountyRock County
StateWisconsin
Coordinates42.57761, -89.07033
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length26 ft (8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,331 (2024)
Projected traffic3,554 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 D over Br Rock River built?

It was built in 1959, making it 66 years old in 2025.

What condition is Cth D over Br Rock River 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 August 2024.

How much traffic does Cth D over Br Rock River carry?

About 3,331 vehicles per day (2024 count).

How long is Cth D over Br Rock River?

The structure is 26 ft (8 m) long with a longest span of 12 ft (3.7 m).

Who owns Cth D over Br Rock River?

It is owned by the County Highway Agency.