US Bridges

Sth 26 NB over Rock R

Good

Jefferson County, Wisconsin · 2.3M N JCT Ush 18 · Structure no. B28015200000000

Built
2009
16 years old
Condition
Good
inspected April 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
966 ft
6 main spans
Daily traffic
6,200
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 26 NB over Rock R is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 26 NB over Rock R in Jefferson County, Wisconsin. It was built in 2009, so it is 16 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, projected to reach 7,440 by 2042. The structure is 966 ft (294.4 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSth 26 NB
CrossesRock R
Location2.3M N JCT Ush 18
RouteState Highway 26
CountyJefferson County
StateWisconsin
Coordinates43.03001, -88.81538
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2022
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 rating61.4 US tons
Inventory rating47.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length966 ft (294.4 m)
Longest span160 ft (48.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,200 (2022)
Projected traffic7,440 by 2042
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 26 NB over Rock R built?

It was built in 2009, making it 16 years old in 2025.

What condition is Sth 26 NB 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 April 2022.

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

About 6,200 vehicles per day (2022 count).

How long is Sth 26 NB over Rock R?

The structure is 966 ft (294.4 m) long with a longest span of 160 ft (48.9 m) and a deck 43 ft wide.

Who owns Sth 26 NB over Rock R?

It is owned by the State Highway Agency.