US Bridges

I 90 WB over Kishwaukee River

Fair

Winnebago County, Illinois · .85 MI E of I 39 · Structure no. 101997300000000

Built
2013
12 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
553 ft
4 main spans
Daily traffic
26,100
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I 90 WB over Kishwaukee River is a steel continuous stringer/multi-beam or girder carrying I 90 WB over Kishwaukee River in Winnebago County, Illinois. It was built in 2013, so it is 12 years old, younger than the Illinois average of 45.3 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 26,100 vehicles a day, roughly 24% of them trucks, projected to reach 20,907 by 2046. The structure is 553 ft (168.7 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 90 WB
CrossesKishwaukee River
Location.85 MI E of I 39
RouteInterstate 90
CountyWinnebago County
StateIllinois
Coordinates42.24709, -88.94337
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length553 ft (168.7 m)
Longest span147 ft (44.8 m)
Deck width69 ft (21 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,100 (2023)
Projected traffic20,907 by 2046
Trucks24%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 I 90 WB over Kishwaukee River built?

It was built in 2013, making it 12 years old in 2025.

What condition is I 90 WB over Kishwaukee River 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 May 2023.

How much traffic does I 90 WB over Kishwaukee River carry?

About 26,100 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is I 90 WB over Kishwaukee River?

The structure is 553 ft (168.7 m) long with a longest span of 147 ft (44.8 m) and a deck 69 ft wide.

Who owns I 90 WB over Kishwaukee River?

It is owned by the State Toll Authority.