US Bridges

I-90 Ramp over I-90

Fair

Winnebago County, Illinois · .25 MI N of 20 Br · Structure no. 101991100000000

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

About this bridge

I-90 Ramp over I-90 is a prestressed concrete stringer/multi-beam or girder carrying I-90 Ramp over I-90 in Winnebago 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 fair condition with a lowest component rating of 5 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 4,750 vehicles a day, projected to reach 10,100 by 2046. The structure is 228 ft (69.5 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-90 Ramp
CrossesI-90
Location.25 MI N of 20 Br
CountyWinnebago County
StateIllinois
Coordinates42.27542, -88.96498
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating45.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length228 ft (69.5 m)
Longest span78 ft (23.8 m)
Deck width44 ft (13.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,750 (2023)
Projected traffic10,100 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 toll 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 I-90 Ramp over I-90 built?

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

What condition is I-90 Ramp over I-90 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 June 2023.

How much traffic does I-90 Ramp over I-90 carry?

About 4,750 vehicles per day (2023 count).

How long is I-90 Ramp over I-90?

The structure is 228 ft (69.5 m) long with a longest span of 78 ft (23.8 m) and a deck 44 ft wide.

Who owns I-90 Ramp over I-90?

It is owned by the State Toll Authority.