US Bridges

Ill 37 over BNSF RR

Good

Williamson County, Illinois · 1.7 MI N of Ill 148 · Structure no. 100009000000000

Built
2009
16 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
175 ft
3 main spans
Daily traffic
3,350
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 37 over BNSF RR is a steel continuous stringer/multi-beam or girder carrying Ill 37 over BNSF RR in Williamson County, Illinois. It was built in 2009, so it is 16 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,350 vehicles a day, roughly 16% of them trucks, projected to reach 3,283 by 2046. The structure is 175 ft (53.3 m) long and 43 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesIll 37
CrossesBNSF RR
Location1.7 MI N of Ill 148
RouteState Highway 37
Coordinates37.63514, -88.96223
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating46.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length175 ft (53.3 m)
Longest span78 ft (23.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,350 (2023)
Projected traffic3,283 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.9 mi (16 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 Ill 37 over BNSF RR built?

It was built in 2009, making it 16 years old in 2025.

What condition is Ill 37 over BNSF RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Ill 37 over BNSF RR carry?

About 3,350 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Ill 37 over BNSF RR?

The structure is 175 ft (53.3 m) long with a longest span of 78 ft (23.8 m) and a deck 43 ft wide.

Who owns Ill 37 over BNSF RR?

It is owned by the State Highway Agency.