US Bridges

Lake-Cook Road over Des Plaines River

Fair

Cook County, Illinois · 0.2 M E of US-45 · Structure no. 016325800000000

Built
1994
31 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
194 ft
2 main spans
Daily traffic
34,300
2022 count
Owner
County
County Highway Agency

About this bridge

Lake-Cook Road over Des Plaines River is a prestressed concrete continuous stringer/multi-beam or girder carrying Lake-Cook Road over Des Plaines River in Cook County, Illinois. It was built in 1994, so it is 31 years old, younger 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 34,300 vehicles a day, roughly 5% of them trucks, projected to reach 46,258 by 2046. The structure is 194 ft (59.2 m) long and 152 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLake-Cook Road
CrossesDes Plaines River
Location0.2 M E of US-45
Coordinates42.15308, -87.91189
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length194 ft (59.2 m)
Longest span96 ft (29.3 m)
Deck width152 ft (46.3 m)
Roadway width132 ft (40.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,300 (2022)
Projected traffic46,258 by 2046
Trucks5%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
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 Lake-Cook Road over Des Plaines River built?

It was built in 1994, making it 31 years old in 2025.

What condition is Lake-Cook Road over Des Plaines River 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 2024.

How much traffic does Lake-Cook Road over Des Plaines River carry?

About 34,300 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Lake-Cook Road over Des Plaines River?

The structure is 194 ft (59.2 m) long with a longest span of 96 ft (29.3 m) and a deck 152 ft wide.

Who owns Lake-Cook Road over Des Plaines River?

It is owned by the County Highway Agency.