US Bridges

Il 37 over Ic RR

Fair

Marion County, Illinois · 4.25 MI N Salem · Structure no. 061001800000000

Built
1930
95 years old, rebuilt 1983
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
219 ft
3 main spans
Daily traffic
2,350
2023 count
Owner
State
State Highway Agency

About this bridge

Il 37 over Ic RR is a steel continuous stringer/multi-beam or girder carrying Il 37 over Ic RR in Marion County, Illinois. It was built in 1930 and reconstructed in 1983, so it is 95 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 2,350 vehicles a day, roughly 11% of them trucks, projected to reach 2,879 by 2046. The structure is 219 ft (66.8 m) long and 35 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesIl 37
CrossesIc RR
Location4.25 MI N Salem
RouteState Highway 37
CountyMarion County
StateIllinois
Coordinates38.69613, -88.94008
Functional classRural Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 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
Structure length219 ft (66.8 m)
Longest span93 ft (28.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,350 (2023)
Projected traffic2,879 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed14.3 mi (23 km)
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 Il 37 over Ic RR built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1983.

What condition is Il 37 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 April 2024.

How much traffic does Il 37 over Ic RR carry?

About 2,350 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Il 37 over Ic RR?

The structure is 219 ft (66.8 m) long with a longest span of 93 ft (28.3 m) and a deck 35 ft wide.

Who owns Il 37 over Ic RR?

It is owned by the State Highway Agency.