US Bridges

I-57 NB over Cn Railroad

Fair

Kankakee County, Illinois · 0.3 MI NW of Il 50 · Structure no. 046014700000000

Built
2012
13 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
170 ft
3 main spans
Daily traffic
13,700
2023 count
Owner
State
State Highway Agency

About this bridge

I-57 NB over Cn Railroad is a steel continuous stringer/multi-beam or girder carrying I-57 NB over Cn Railroad 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 13,700 vehicles a day, roughly 31% of them trucks, projected to reach 16,677 by 2046. The structure is 170 ft (51.8 m) long and 74 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-57 NB
CrossesCn Railroad
Location0.3 MI NW of Il 50
RouteInterstate 57
CountyKankakee County
StateIllinois
Coordinates41.16969, -87.85612
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.8 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span67 ft (20.5 m)
Deck width74 ft (22.6 m)
Roadway width71 ft (21.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,700 (2023)
Projected traffic16,677 by 2046
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-57 NB over Cn Railroad built?

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

What condition is I-57 NB over Cn Railroad 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 NB over Cn Railroad carry?

About 13,700 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is I-57 NB over Cn Railroad?

The structure is 170 ft (51.8 m) long with a longest span of 67 ft (20.5 m) and a deck 74 ft wide.

Who owns I-57 NB over Cn Railroad?

It is owned by the State Highway Agency.