US Bridges

I-90 over Stream

Fair

Boone County, Illinois · 1.9 MI E Winn CO LN · Structure no. 004995100000000

Built
1958
67 years old, rebuilt 2014
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
25,700
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 over Stream is a concrete culvert carrying I-90 over Stream in Boone County, Illinois. It was built in 1958 and reconstructed in 2014, 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 25,700 vehicles a day, roughly 25% of them trucks, projected to reach 21,528 by 2046. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-90
CrossesStream
Location1.9 MI E Winn CO LN
RouteInterstate 90
CountyBoone County
StateIllinois
Coordinates42.2349, -88.90981
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.1 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,700 (2023)
Projected traffic21,528 by 2046
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 over Stream built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2014.

What condition is I-90 over Stream 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 July 2023.

How much traffic does I-90 over Stream carry?

About 25,700 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is I-90 over Stream?

The structure is 27 ft (8.1 m) long with a longest span of 11 ft (3.4 m).

Who owns I-90 over Stream?

It is owned by the State Toll Authority.