US Bridges

Ush 12W-STH B26N-S over Rock River

Good

Jefferson County, Wisconsin · 0.1M W JCT Ush 12 to E · Structure no. B28007400000000

Built
1997
28 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
279 ft
5 main spans
Daily traffic
12,300
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ush 12W-STH B26N-S over Rock River is a prestressed concrete continuous stringer/multi-beam or girder carrying Ush 12W-STH B26N-S over Rock River in Jefferson 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 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 12,300 vehicles a day, roughly 4% of them trucks, projected to reach 14,760 by 2042. The structure is 279 ft (85.1 m) long and 72 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUsh 12W-STH B26N-S
CrossesRock River
Location0.1M W JCT Ush 12 to E
RouteU.S. Route 12
Coordinates42.92781, -88.83667
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating39.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length279 ft (85.1 m)
Longest span60 ft (18.3 m)
Deck width72 ft (21.9 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,300 (2022)
Projected traffic14,760 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Ush 12W-STH B26N-S over Rock River built?

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

What condition is Ush 12W-STH B26N-S over 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 Ush 12W-STH B26N-S over Rock River carry?

About 12,300 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Ush 12W-STH B26N-S over Rock River?

The structure is 279 ft (85.1 m) long with a longest span of 60 ft (18.3 m) and a deck 72 ft wide.

Who owns Ush 12W-STH B26N-S over Rock River?

It is owned by the City or Municipal Highway Agency.