US Bridges

I-57 SB over Il 50

Fair

Kankakee County, Illinois · I-57 & Il 50 Intrchg · Structure no. 046014400000000

Built
2012
13 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
230 ft
4 main spans
Daily traffic
14,450
2023 count
Owner
State
State Highway Agency

About this bridge

I-57 SB over Il 50 is a steel continuous stringer/multi-beam or girder carrying I-57 SB over Il 50 in Kankakee County, Illinois. It was built in 2012, so it is 13 years old, younger 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 14,450 vehicles a day, roughly 25% of them trucks, projected to reach 15,045 by 2046. The structure is 230 ft (70 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-57 SB
CrossesIl 50
LocationI-57 & Il 50 Intrchg
RouteInterstate 57
CountyKankakee County
StateIllinois
Coordinates41.16871, -87.85107
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length230 ft (70 m)
Longest span68 ft (20.7 m)
Deck width62 ft (19 m)
Roadway width59 ft (17.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,450 (2023)
Projected traffic15,045 by 2046
Trucks25%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-57 SB over Il 50 built?

It was built in 2012, making it 13 years old in 2025.

What condition is I-57 SB over Il 50 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 2024.

How much traffic does I-57 SB over Il 50 carry?

About 14,450 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is I-57 SB over Il 50?

The structure is 230 ft (70 m) long with a longest span of 68 ft (20.7 m) and a deck 62 ft wide.

Who owns I-57 SB over Il 50?

It is owned by the State Highway Agency.