US Bridges

112th (monterey Av over I- 57

Fair

Cook County, Illinois · 2.3 M SW Il 1 · Structure no. 016098800000000

Built
1965
60 years old, rebuilt 2009
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
173 ft
2 main spans
Daily traffic
19,800
2022 count
Owner
State
State Highway Agency

About this bridge

112th (monterey Av over I- 57 is a steel continuous stringer/multi-beam or girder carrying 112th (monterey Av over I- 57 in Cook County, Illinois. It was built in 1965 and reconstructed in 2009, 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 6 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 19,800 vehicles a day, roughly 4% of them trucks, projected to reach 18,180 by 2046. The structure is 173 ft (52.7 m) long and 83 ft wide.

Location

Open in Google Maps
Carries112th (monterey Av
CrossesI- 57
Location2.3 M SW Il 1
CountyCook County
StateIllinois
Coordinates41.68928, -87.66121
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length173 ft (52.7 m)
Longest span86 ft (26.3 m)
Deck width83 ft (25.3 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,800 (2022)
Projected traffic18,180 by 2046
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 112th (monterey Av over I- 57 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2009.

What condition is 112th (monterey Av 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 112th (monterey Av over I- 57 carry?

About 19,800 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is 112th (monterey Av over I- 57?

The structure is 173 ft (52.7 m) long with a longest span of 86 ft (26.3 m) and a deck 83 ft wide.

Who owns 112th (monterey Av over I- 57?

It is owned by the State Highway Agency.