US Bridges

175th ST over I- 57

Fair

Cook County, Illinois · 0.4 M N I-80 · Structure no. 016109500000000

Built
1965
60 years old, rebuilt 2022
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
269 ft
2 main spans
Daily traffic
2,900
2022 count
Owner
State
State Highway Agency

About this bridge

175th ST over I- 57 is a steel continuous stringer/multi-beam or girder carrying 175th ST over I- 57 in Cook County, Illinois. It was built in 1965 and reconstructed in 2022, so it is 60 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 2,900 vehicles a day, roughly 4% of them trucks, projected to reach 4,495 by 2046. The structure is 269 ft (82.1 m) long and 70 ft wide.

Location

Open in Google Maps
Carries175th ST
CrossesI- 57
Location0.4 M N I-80
CountyCook County
StateIllinois
Coordinates41.57163, -87.74366
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMarch 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 rating38.6 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length269 ft (82.1 m)
Longest span108 ft (33 m)
Deck width70 ft (21.3 m)
Roadway width45 ft (13.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2022)
Projected traffic4,495 by 2046
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 175th ST over I- 57 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2022.

What condition is 175th ST over I- 57 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 March 2023.

How much traffic does 175th ST over I- 57 carry?

About 2,900 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is 175th ST over I- 57?

The structure is 269 ft (82.1 m) long with a longest span of 108 ft (33 m) and a deck 70 ft wide.

Who owns 175th ST over I- 57?

It is owned by the State Highway Agency.