US Bridges

I- 55 WB Stevenson over Il 50 (cicero Ave)

Fair

Cook County, Illinois · 5.7 M SW I94 · Structure no. 016001700000000

Built
1963
62 years old, rebuilt 2000
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
203 ft
3 main spans
Daily traffic
68,750
2024 count
Owner
State
State Highway Agency

About this bridge

I- 55 WB Stevenson over Il 50 (cicero Ave) is a steel stringer/multi-beam or girder carrying I- 55 WB Stevenson over Il 50 (cicero Ave) in Cook County, Illinois. It was built in 1963 and reconstructed in 2000, so it is 62 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 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 68,750 vehicles a day, roughly 9% of them trucks, projected to reach 67,901 by 2046. The structure is 203 ft (61.8 m) long and 59 ft wide.

Location

Open in Google Maps
CarriesI- 55 WB Stevenson
CrossesIl 50 (cicero Ave)
Location5.7 M SW I94
RouteInterstate 55
CountyCook County
StateIllinois
Coordinates41.81706, -87.74366
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating59.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length203 ft (61.8 m)
Longest span113 ft (34.5 m)
Deck width59 ft (18.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68,750 (2024)
Projected traffic67,901 by 2046
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I- 55 WB Stevenson over Il 50 (cicero Ave) built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2000.

What condition is I- 55 WB Stevenson over Il 50 (cicero Ave) 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 December 2024.

How much traffic does I- 55 WB Stevenson over Il 50 (cicero Ave) carry?

About 68,750 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is I- 55 WB Stevenson over Il 50 (cicero Ave)?

The structure is 203 ft (61.8 m) long with a longest span of 113 ft (34.5 m) and a deck 59 ft wide.

Who owns I- 55 WB Stevenson over Il 50 (cicero Ave)?

It is owned by the State Highway Agency.