US Bridges

IH 90 EB over Sth 30 EB

Fair

Dane County, Wisconsin · 0.5M E JCT IH 94 to E · Structure no. B13033400000000

Built
1997
28 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
174 ft
4 main spans
Daily traffic
38,100
2022 count
Owner
State
State Highway Agency

About this bridge

IH 90 EB over Sth 30 EB is a prestressed concrete continuous stringer/multi-beam or girder carrying IH 90 EB 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 38,100 vehicles a day, projected to reach 36,696 by 2043. The structure is 174 ft (53 m) long and 68 ft wide.

Location

Open in Google Maps
CarriesIH 90 EB
CrossesSth 30 EB
Location0.5M E JCT IH 94 to E
RouteInterstate 90
CountyDane County
StateWisconsin
Coordinates43.10171, -89.28582
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum 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 spans4
Design loadHS 20
Structure length174 ft (53 m)
Longest span52 ft (15.8 m)
Deck width68 ft (20.8 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,100 (2022)
Projected traffic36,696 by 2043
Trucks0%
Lanes on structure4
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 EB over Sth 30 EB built?

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

What condition is IH 90 EB over Sth 30 EB in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

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

About 38,100 vehicles per day (2022 count).

How long is IH 90 EB over Sth 30 EB?

The structure is 174 ft (53 m) long with a longest span of 52 ft (15.8 m) and a deck 68 ft wide.

Who owns IH 90 EB over Sth 30 EB?

It is owned by the State Highway Agency.