US Bridges

Sth 69 over Sugar River

Good

Dane County, Wisconsin · 1.9M N JCT Cth Pb to S · Structure no. B13043400000000

Built
1998
27 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
112 ft
3 main spans
Daily traffic
6,200
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 69 over Sugar River is a concrete continuous slab carrying Sth 69 over Sugar River in Dane County, Wisconsin. It was built in 1998, so it is 27 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 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 6,200 vehicles a day, roughly 4% of them trucks, projected to reach 7,440 by 2043. The structure is 112 ft (34.1 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSth 69
CrossesSugar River
Location1.9M N JCT Cth Pb to S
RouteState Highway 69
Coordinates42.94894, -89.54415
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 within limits of footing or piles
Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating80.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length112 ft (34.1 m)
Longest span44 ft (13.4 m)
Deck width42 ft (12.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,200 (2022)
Projected traffic7,440 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Sth 69 over Sugar River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Sth 69 over Sugar 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 September 2024.

How much traffic does Sth 69 over Sugar River carry?

About 6,200 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Sth 69 over Sugar River?

The structure is 112 ft (34.1 m) long with a longest span of 44 ft (13.4 m) and a deck 42 ft wide.

Who owns Sth 69 over Sugar River?

It is owned by the State Highway Agency.