US Bridges

Il 59 over RR - UP & Cn

Fair

DuPage County, Illinois · 1.25 M N of Il 38 · Structure no. 022014300000000

Built
1975
50 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
204 ft
3 main spans
Daily traffic
34,400
2023 count
Owner
State
State Highway Agency

About this bridge

Il 59 over RR - UP & Cn is a steel continuous stringer/multi-beam or girder carrying Il 59 over RR - UP & Cn in DuPage County, Illinois. It was built in 1975, so it is 50 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 34,400 vehicles a day, roughly 9% of them trucks, projected to reach 34,542 by 2046. The structure is 204 ft (62.2 m) long and 80 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesIl 59
CrossesRR - UP & Cn
Location1.25 M N of Il 38
RouteState Highway 59
CountyDuPage County
StateIllinois
Coordinates41.87964, -88.19463
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length204 ft (62.2 m)
Longest span74 ft (22.5 m)
Deck width80 ft (24.4 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,400 (2023)
Projected traffic34,542 by 2046
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

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 59 over RR - UP & Cn built?

It was built in 1975, making it 50 years old in 2025.

What condition is Il 59 over RR - UP & Cn 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 November 2024.

How much traffic does Il 59 over RR - UP & Cn carry?

About 34,400 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Il 59 over RR - UP & Cn?

The structure is 204 ft (62.2 m) long with a longest span of 74 ft (22.5 m) and a deck 80 ft wide.

Who owns Il 59 over RR - UP & Cn?

It is owned by the State Highway Agency.