US Bridges

I-57 NB over Ic RR

Fair

Marion County, Illinois · 3 MI N Salem Int · Structure no. 061005500000000

Built
1968
57 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
226 ft
3 main spans
Daily traffic
8,350
2023 count
Owner
State
State Highway Agency

About this bridge

I-57 NB over Ic RR is a steel continuous stringer/multi-beam or girder carrying I-57 NB over Ic RR in Marion County, Illinois. It was built in 1968, so it is 57 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 8,350 vehicles a day, roughly 62% of them trucks, projected to reach 11,009 by 2046. The structure is 226 ft (68.9 m) long and 42 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesI-57 NB
CrossesIc RR
Location3 MI N Salem Int
RouteInterstate 57
CountyMarion County
StateIllinois
Coordinates38.66898, -88.97248
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length226 ft (68.9 m)
Longest span86 ft (26.2 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,350 (2023)
Projected traffic11,009 by 2046
Trucks62%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed13 mi (21 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 NB over Ic RR built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-57 NB over Ic RR 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 August 2023.

How much traffic does I-57 NB over Ic RR carry?

About 8,350 vehicles per day (2023 count), of which roughly 62% are trucks.

How long is I-57 NB over Ic RR?

The structure is 226 ft (68.9 m) long with a longest span of 86 ft (26.2 m) and a deck 42 ft wide.

Who owns I-57 NB over Ic RR?

It is owned by the State Highway Agency.