US Bridges

Il 390 WB over US Il RTE 83

Good

DuPage County, Illinois · N Thorndale & RTE 83 · Structure no. 022901300000000

Built
2018
7 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
260 ft
2 main spans
Daily traffic
17,200
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Il 390 WB over US Il RTE 83 is a steel continuous stringer/multi-beam or girder carrying Il 390 WB over US Il RTE 83 in DuPage County, Illinois. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 17,200 vehicles a day, roughly 17% of them trucks, projected to reach 10,807 by 2046. The structure is 260 ft (79.3 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIl 390 WB
CrossesUS Il RTE 83
LocationN Thorndale & RTE 83
RouteState Highway 390
Coordinates41.9828, -87.9598
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating55.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length260 ft (79.3 m)
Longest span142 ft (43.2 m)
Deck width66 ft (20 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,200 (2023)
Projected traffic10,807 by 2046
Trucks17%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 390 WB over US Il RTE 83 built?

It was built in 2018, making it 7 years old in 2025.

What condition is Il 390 WB over US Il RTE 83 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 April 2023.

How much traffic does Il 390 WB over US Il RTE 83 carry?

About 17,200 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Il 390 WB over US Il RTE 83?

The structure is 260 ft (79.3 m) long with a longest span of 142 ft (43.2 m) and a deck 66 ft wide.

Who owns Il 390 WB over US Il RTE 83?

It is owned by the State Toll Authority.