US Bridges

IH 90 WB over Sth 30 EB

Good

Dane County, Wisconsin · 4.0M W JCT Ush 12 to E · Structure no. B13030900000000

Built
1997
28 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
119 ft
3 main spans
Daily traffic
29,200
2022 count
Owner
State
State Highway Agency

About this bridge

IH 90 WB over Sth 30 EB is a prestressed concrete continuous stringer/multi-beam or girder carrying IH 90 WB over Sth 30 EB in Dane 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 29,200 vehicles a day, roughly 11% of them trucks, projected to reach 54,041 by 2042. The structure is 119 ft (36.2 m) long and 71 ft wide.

Location

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CarriesIH 90 WB
CrossesSth 30 EB
Location4.0M W JCT Ush 12 to E
RouteInterstate 90
CountyDane County
StateWisconsin
Coordinates43.10143, -89.28277
Functional classUrban Principal Arterial - Interstate

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.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length119 ft (36.2 m)
Longest span52 ft (15.8 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,200 (2022)
Projected traffic54,041 by 2042
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 90 WB over Sth 30 EB built?

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

What condition is IH 90 WB over Sth 30 EB 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 May 2023.

How much traffic does IH 90 WB over Sth 30 EB carry?

About 29,200 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is IH 90 WB over Sth 30 EB?

The structure is 119 ft (36.2 m) long with a longest span of 52 ft (15.8 m) and a deck 71 ft wide.

Who owns IH 90 WB over Sth 30 EB?

It is owned by the State Highway Agency.