US Bridges

NB I-294 over I-55

Good

Cook County, Illinois · I294 at I55 · Structure no. 016952100000000

Built
2023
2 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
687 ft
4 main spans
Daily traffic
76,550
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

NB I-294 over I-55 is a steel continuous stringer/multi-beam or girder carrying NB I-294 over I-55 in Cook County, Illinois. It was built in 2023, so it is 2 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 76,550 vehicles a day, roughly 19% of them trucks, projected to reach 193,690 by 2040. The structure is 687 ft (209.4 m) long and 95 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNB I-294
CrossesI-55
LocationI294 at I55
RouteInterstate 294
CountyCook County
StateIllinois
Coordinates41.76071, -87.8927
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.9 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length687 ft (209.4 m)
Longest span179 ft (54.7 m)
Deck width95 ft (29 m)
Roadway width92 ft (28 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,550 (2023)
Projected traffic193,690 by 2040
Trucks19%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 NB I-294 over I-55 built?

It was built in 2023, making it 2 years old in 2025.

What condition is NB I-294 over I-55 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 2024.

How much traffic does NB I-294 over I-55 carry?

About 76,550 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is NB I-294 over I-55?

The structure is 687 ft (209.4 m) long with a longest span of 179 ft (54.7 m) and a deck 95 ft wide.

Who owns NB I-294 over I-55?

It is owned by the State Toll Authority.