US Bridges

Sth 26 SB over Rock R

Good

Jefferson County, Wisconsin · 0.6 Mi. N of Cth Y · Structure no. B28016300000000

Built
2010
15 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
649 ft
4 main spans
Daily traffic
4,500
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 26 SB over Rock R is a concrete continuous stringer/multi-beam or girder carrying Sth 26 SB over Rock R in Jefferson County, Wisconsin. It was built in 2010, so it is 15 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 4,500 vehicles a day, projected to reach 5,400 by 2042. The structure is 649 ft (197.8 m) long and 43 ft wide.

CarriesSth 26 SB
CrossesRock R
Location0.6 Mi. N of Cth Y
RouteState Highway 26
Coordinates43.15981, -88.75533
Functional classRural Principal Arterial - Other

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 protection9 ExcellentNo problems noted.
Last inspectionJuly 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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating40 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length649 ft (197.8 m)
Longest span160 ft (48.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2022)
Projected traffic5,400 by 2042
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 26 SB over Rock R built?

It was built in 2010, making it 15 years old in 2025.

What condition is Sth 26 SB over Rock R 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 July 2024.

How much traffic does Sth 26 SB over Rock R carry?

About 4,500 vehicles per day (2022 count).

How long is Sth 26 SB over Rock R?

The structure is 649 ft (197.8 m) long with a longest span of 160 ft (48.8 m) and a deck 43 ft wide.

Who owns Sth 26 SB over Rock R?

It is owned by the State Highway Agency.