US Bridges

Cth G over W Br Sugar River

PoorPosted for load

Dane County, Wisconsin · 1.6M S JCT Sth 92 · Structure no. B13003900000000

Built
1953
72 years old
Condition
Poor
inspected September 2024
Type
Slab
Concrete Continuous
Length
73 ft
3 main spans
Daily traffic
1,200
2022 count
Owner
County
County Highway Agency

About this bridge

Cth G over W Br Sugar River is a concrete continuous slab carrying Cth G over W Br Sugar River in Dane County, Wisconsin. It was built in 1953, so it is 72 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,200 vehicles a day, projected to reach 1,440 by 2042. The structure is 73 ft (22.1 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCth G
CrossesW Br Sugar River
Location1.6M S JCT Sth 92
RouteCounty Highway 0G
CountyDane County
StateWisconsin
Coordinates42.93089, -89.67689
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.2 US tons
Inventory rating14.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length73 ft (22.1 m)
Longest span28 ft (8.5 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2022)
Projected traffic1,440 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$425,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth G over W Br Sugar River built?

It was built in 1953, making it 72 years old in 2025.

What condition is Cth G over W Br Sugar River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

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

About 1,200 vehicles per day (2022 count).

How long is Cth G over W Br Sugar River?

The structure is 73 ft (22.1 m) long with a longest span of 28 ft (8.5 m) and a deck 29 ft wide.

Who owns Cth G over W Br Sugar River?

It is owned by the County Highway Agency.