US Bridges

Winnetka RD over Skokie River

Good

Cook County, Illinois · 0.3 M E I-94 · Structure no. 016116200000000

Built
1935
90 years old, rebuilt 2019
Condition
Good
inspected February 2022
Type
Slab
Concrete Continuous
Length
73 ft
3 main spans
Daily traffic
6,700
2022 count
Owner
County
County Highway Agency

About this bridge

Winnetka RD over Skokie River is a concrete continuous slab carrying Winnetka RD over Skokie River in Cook County, Illinois. It was built in 1935 and reconstructed in 2019, so it is 90 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 6,700 vehicles a day, roughly 2% of them trucks, projected to reach 7,525 by 2046. The structure is 73 ft (22.3 m) long and 62 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesWinnetka RD
CrossesSkokie River
Location0.3 M E I-94
CountyCook County
StateIllinois
Coordinates42.09402, -87.75715
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating42.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length73 ft (22.3 m)
Longest span35 ft (10.6 m)
Deck width62 ft (18.9 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,700 (2022)
Projected traffic7,525 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$960,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Winnetka RD over Skokie River built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2019.

What condition is Winnetka RD over Skokie River 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 February 2022.

How much traffic does Winnetka RD over Skokie River carry?

About 6,700 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Winnetka RD over Skokie River?

The structure is 73 ft (22.3 m) long with a longest span of 35 ft (10.6 m) and a deck 62 ft wide.

Who owns Winnetka RD over Skokie River?

It is owned by the County Highway Agency.