US Bridges

I-294 SB over Des Plaines Riv RD

Good

Cook County, Illinois · 1.2 M N Ill 72 P11 · Structure no. 016977100000000

Built
1958
67 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
186 ft
2 main spans
Daily traffic
92,600
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-294 SB over Des Plaines Riv RD is a prestressed concrete stringer/multi-beam or girder carrying I-294 SB over Des Plaines Riv RD in Cook 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 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 92,600 vehicles a day, roughly 11% of them trucks, projected to reach 75,245 by 2046. The structure is 186 ft (56.7 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-294 SB
CrossesDes Plaines Riv RD
Location1.2 M N Ill 72 P11
RouteInterstate 294
CountyCook County
StateIllinois
Coordinates42.00875, -87.86862
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length186 ft (56.7 m)
Longest span86 ft (26.2 m)
Deck width67 ft (20.4 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic92,600 (2023)
Projected traffic75,245 by 2046
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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-294 SB over Des Plaines Riv RD built?

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

What condition is I-294 SB over Des Plaines Riv RD 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 April 2023.

How much traffic does I-294 SB over Des Plaines Riv RD carry?

About 92,600 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is I-294 SB over Des Plaines Riv RD?

The structure is 186 ft (56.7 m) long with a longest span of 86 ft (26.2 m) and a deck 67 ft wide.

Who owns I-294 SB over Des Plaines Riv RD?

It is owned by the State Toll Authority.