US Bridges

I90 EB On-Off Rp over I90 (nw Toll)

Good

Kane County, Illinois · 1.7 M S Mchenry CO L · Structure no. 045992600000000

Built
1958
67 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
228 ft
4 main spans
Daily traffic
1,750
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I90 EB On-Off Rp over I90 (nw Toll) is a prestressed concrete stringer/multi-beam or girder carrying I90 EB On-Off Rp over I90 (nw Toll) in Kane County, Illinois. It was built in 1958, so it is 67 years old, older 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 1,750 vehicles a day, projected to reach 1,769 by 2046. The structure is 228 ft (69.5 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI90 EB On-Off Rp
CrossesI90 (nw Toll)
Location1.7 M S Mchenry CO L
CountyKane County
StateIllinois
Coordinates42.14443, -88.5144
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.1 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length228 ft (69.5 m)
Longest span80 ft (24.4 m)
Deck width37 ft (11.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2023)
Projected traffic1,769 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 I90 EB On-Off Rp over I90 (nw Toll) built?

It was built in 1958, making it 67 years old in 2025.

What condition is I90 EB On-Off Rp over I90 (nw Toll) 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 July 2023.

How much traffic does I90 EB On-Off Rp over I90 (nw Toll) carry?

About 1,750 vehicles per day (2023 count).

How long is I90 EB On-Off Rp over I90 (nw Toll)?

The structure is 228 ft (69.5 m) long with a longest span of 80 ft (24.4 m) and a deck 37 ft wide.

Who owns I90 EB On-Off Rp over I90 (nw Toll)?

It is owned by the State Toll Authority.