US Bridges

US 34 over RR - Cn

Good

DuPage County, Illinois · 1.5 M SW of Il 59 · Structure no. 022051200000000

Built
2014
11 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
293 ft
3 main spans
Daily traffic
30,100
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over RR - Cn is a steel continuous stringer/multi-beam or girder carrying US 34 over RR - Cn in DuPage County, Illinois. It was built in 2014, so it is 11 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 30,100 vehicles a day, roughly 9% of them trucks, projected to reach 34,946 by 2046. The structure is 293 ft (89.3 m) long and 97 ft wide.

CarriesUS 34
CrossesRR - Cn
Location1.5 M SW of Il 59
RouteU.S. Route 34
Coordinates41.74466, -88.23326
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length293 ft (89.3 m)
Longest span101 ft (30.7 m)
Deck width97 ft (29.6 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,100 (2023)
Projected traffic34,946 by 2046
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed—
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 US 34 over RR - Cn built?

It was built in 2014, making it 11 years old in 2025.

What condition is US 34 over RR - Cn 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 March 2024.

How much traffic does US 34 over RR - Cn carry?

About 30,100 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US 34 over RR - Cn?

The structure is 293 ft (89.3 m) long with a longest span of 101 ft (30.7 m) and a deck 97 ft wide.

Who owns US 34 over RR - Cn?

It is owned by the State Highway Agency.