US Bridges

I-90 (wb) over Ill. Rte. 31

Good

Kane County, Illinois · 1.5 Mi. W. of Il 25 · Structure no. 045999200000000

Built
2015
10 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
129 ft
1 main span
Daily traffic
52,600
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 (wb) over Ill. Rte. 31 is a prestressed concrete stringer/multi-beam or girder carrying I-90 (wb) over Ill. Rte. 31 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 8 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 14% of them trucks, projected to reach 52,460 by 2046. The structure is 129 ft (39.4 m) long and 93 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-90 (wb)
CrossesIll. Rte. 31
Location1.5 Mi. W. of Il 25
RouteInterstate 90
CountyKane County
StateIllinois
Coordinates42.06724, -88.29183
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length129 ft (39.4 m)
Longest span126 ft (38.3 m)
Deck width93 ft (28.2 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,600 (2023)
Projected traffic52,460 by 2046
Trucks14%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 (wb) over Ill. Rte. 31 built?

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

What condition is I-90 (wb) over Ill. Rte. 31 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 August 2024.

How much traffic does I-90 (wb) over Ill. Rte. 31 carry?

About 52,600 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I-90 (wb) over Ill. Rte. 31?

The structure is 129 ft (39.4 m) long with a longest span of 126 ft (38.3 m) and a deck 93 ft wide.

Who owns I-90 (wb) over Ill. Rte. 31?

It is owned by the State Toll Authority.