US Bridges

IH 90 Eb-Ih 94 EB over Lrd Ishnala RD

Good

Sauk County, Wisconsin · 1.5M E JCT Sth 23 (b) · Structure no. B56004900000000

Built
1961
64 years old, rebuilt 1990
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
23,500
2021 count
Owner
State
State Highway Agency

About this bridge

IH 90 Eb-Ih 94 EB over Lrd Ishnala RD is a concrete continuous slab carrying IH 90 Eb-Ih 94 EB over Lrd Ishnala RD in Sauk County, Wisconsin. It was built in 1961 and reconstructed in 1990, so it is 64 years old, older 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 23,500 vehicles a day, roughly 13% of them trucks, projected to reach 28,200 by 2041. The structure is 120 ft (36.7 m) long and 43 ft wide.

CarriesIH 90 Eb-Ih 94 EB
CrossesLrd Ishnala RD
Location1.5M E JCT Sth 23 (b)
RouteInterstate 90
Coordinates43.57264, -89.79864
Functional classRural 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.7 m)
Longest span46 ft (14 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,500 (2021)
Projected traffic28,200 by 2041
Trucks13%
Lanes on structure2
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-Ih 94 EB over Lrd Ishnala RD built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1990.

What condition is IH 90 Eb-Ih 94 EB over Lrd Ishnala RD 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 Eb-Ih 94 EB over Lrd Ishnala RD carry?

About 23,500 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is IH 90 Eb-Ih 94 EB over Lrd Ishnala RD?

The structure is 120 ft (36.7 m) long with a longest span of 46 ft (14 m) and a deck 43 ft wide.

Who owns IH 90 Eb-Ih 94 EB over Lrd Ishnala RD?

It is owned by the State Highway Agency.