US Bridges

55th ST WB Garfld over I- 90 94 Ryan & Cta

Fair

Cook County, Illinois · At 55th ST · Structure no. 016115300000000

Built
1962
63 years old, rebuilt 1999
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
273 ft
5 main spans
Daily traffic
22,900
2022 count
Owner
State
State Highway Agency

About this bridge

55th ST WB Garfld over I- 90 94 Ryan & Cta is a steel continuous stringer/multi-beam or girder carrying 55th ST WB Garfld over I- 90 94 Ryan & Cta in Cook County, Illinois. It was built in 1962 and reconstructed in 1999, so it is 63 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 22,900 vehicles a day, roughly 5% of them trucks, projected to reach 27,674 by 2046. The structure is 273 ft (83.3 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries55th ST WB Garfld
CrossesI- 90 94 Ryan & Cta
LocationAt 55th ST
CountyCook County
StateIllinois
Coordinates41.79418, -87.63078
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length273 ft (83.3 m)
Longest span72 ft (21.9 m)
Deck width67 ft (20.5 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,900 (2022)
Projected traffic27,674 by 2046
Trucks5%
Lanes on structure5
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was 55th ST WB Garfld over I- 90 94 Ryan & Cta built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1999.

What condition is 55th ST WB Garfld over I- 90 94 Ryan & Cta 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 September 2023.

How much traffic does 55th ST WB Garfld over I- 90 94 Ryan & Cta carry?

About 22,900 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 55th ST WB Garfld over I- 90 94 Ryan & Cta?

The structure is 273 ft (83.3 m) long with a longest span of 72 ft (21.9 m) and a deck 67 ft wide.

Who owns 55th ST WB Garfld over I- 90 94 Ryan & Cta?

It is owned by the State Highway Agency.