US Bridges

Cth G over Br Sugar River

Fair

Dane County, Wisconsin · 1.6M E JCT Cth J · Structure no. B13048700000000

Built
1997
28 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
34 ft
1 main span
Daily traffic
2,141
2022 count
Owner
County
County Highway Agency

About this bridge

Cth G over Br Sugar River is a concrete slab carrying Cth G over Br Sugar River in Dane County, Wisconsin. It was built in 1997, so it is 28 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 2,141 vehicles a day, projected to reach 2,355 by 2043. The structure is 34 ft (10.5 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCth G
CrossesBr Sugar River
Location1.6M E JCT Cth J
RouteCounty Highway 0G
CountyDane County
StateWisconsin
Coordinates42.97367, -89.59969
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.5 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.5 m)
Longest span33 ft (10 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,141 (2022)
Projected traffic2,355 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 G over Br Sugar River built?

It was built in 1997, making it 28 years old in 2025.

What condition is Cth G over Br Sugar River 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 September 2024.

How much traffic does Cth G over Br Sugar River carry?

About 2,141 vehicles per day (2022 count).

How long is Cth G over Br Sugar River?

The structure is 34 ft (10.5 m) long with a longest span of 33 ft (10 m) and a deck 36 ft wide.

Who owns Cth G over Br Sugar River?

It is owned by the County Highway Agency.