US Bridges

Cth Jg over Unnamed Waterway

Good

Dane County, Wisconsin · 4.670 Miles North of Cth · Structure no. B13092000000000

Built
2023
2 years old
Condition
Good
inspected September 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
26 ft
1 main span
Daily traffic
590
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Jg over Unnamed Waterway is a aluminum, wrought iron, or cast iron culvert carrying Cth Jg over Unnamed Waterway in Dane County, Wisconsin. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 590 vehicles a day, projected to reach 708 by 2042. The structure is 26 ft (7.8 m) long and 54 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCth Jg
CrossesUnnamed Waterway
Location4.670 Miles North of Cth
RouteCounty Highway 0JG
CountyDane County
StateWisconsin
Coordinates42.94306, -89.71936
Functional classRural Minor 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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating56.4 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadHL 93
Structure length26 ft (7.8 m)
Longest span25 ft (7.7 m)
Deck width54 ft (16.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic590 (2022)
Projected traffic708 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Jg over Unnamed Waterway built?

It was built in 2023, making it 2 years old in 2025.

What condition is Cth Jg over Unnamed Waterway 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 September 2023.

How much traffic does Cth Jg over Unnamed Waterway carry?

About 590 vehicles per day (2022 count).

How long is Cth Jg over Unnamed Waterway?

The structure is 26 ft (7.8 m) long with a longest span of 25 ft (7.7 m) and a deck 54 ft wide.

Who owns Cth Jg over Unnamed Waterway?

It is owned by the County Highway Agency.