US Bridges

I-90 (wb) over Fox River/Duncan Ave

Good

Kane County, Illinois · 1 Mi. E. of Il 31 · Structure no. 045999500000000

Built
2015
10 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,316 ft
8 main spans
Daily traffic
52,600
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 (wb) over Fox River/Duncan Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying I-90 (wb) over Fox River/Duncan Ave in Kane County, Illinois. It was built in 2015, so it is 10 years old, younger than the Illinois average of 45.3 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 52,600 vehicles a day, roughly 17% of them trucks, projected to reach 61,427 by 2046. The structure is 1,316 ft (401 m) long and 83 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-90 (wb)
CrossesFox River/Duncan Ave
Location1 Mi. E. of Il 31
RouteInterstate 90
CountyKane County
StateIllinois
Coordinates42.06639, -88.26968
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating57.1 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 25 or greater
Structure length1,316 ft (401 m)
Longest span0 ft (0 m)
Deck width83 ft (25.4 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,600 (2023)
Projected traffic61,427 by 2046
Trucks17%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a toll 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 Fox River/Duncan Ave built?

It was built in 2015, making it 10 years old in 2025.

What condition is I-90 (wb) over Fox River/Duncan Ave 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 I-90 (wb) over Fox River/Duncan Ave carry?

About 52,600 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is I-90 (wb) over Fox River/Duncan Ave?

The structure is 1,316 ft (401 m) long and a deck 83 ft wide.

Who owns I-90 (wb) over Fox River/Duncan Ave?

It is owned by the State Toll Authority.