US Bridges

I-90 S B over Stonebridge Trail

Fair

Winnebago County, Illinois · 1 MI E of Roscoe · Structure no. 101990300000000

Built
1958
67 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
162 ft
3 main spans
Daily traffic
29,400
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 S B over Stonebridge Trail is a prestressed concrete stringer/multi-beam or girder carrying I-90 S B over Stonebridge Trail 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 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 29,400 vehicles a day, roughly 29% of them trucks, projected to reach 23,634 by 2046. The structure is 162 ft (49.4 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-90 S B
CrossesStonebridge Trail
Location1 MI E of Roscoe
RouteInterstate 39
CountyWinnebago County
StateIllinois
Coordinates42.41124, -88.98561
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span61 ft (18.6 m)
Deck width41 ft (12.4 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,400 (2023)
Projected traffic23,634 by 2046
Trucks29%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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 S B over Stonebridge Trail built?

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

What condition is I-90 S B over Stonebridge Trail 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 S B over Stonebridge Trail carry?

About 29,400 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is I-90 S B over Stonebridge Trail?

The structure is 162 ft (49.4 m) long with a longest span of 61 ft (18.6 m) and a deck 41 ft wide.

Who owns I-90 S B over Stonebridge Trail?

It is owned by the State Toll Authority.