US Bridges

FAU-1485 (diehl RD over W. Br. Dupage River

Fair

DuPage County, Illinois · 0.6 MI W Winfield RD · Structure no. 022310100000000

Built
1990
35 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
186 ft
3 main spans
Daily traffic
10,300
2024 count
Owner
County
County Highway Agency

About this bridge

FAU-1485 (diehl RD over W. Br. Dupage River is a prestressed concrete continuous stringer/multi-beam or girder carrying FAU-1485 (diehl RD over W. Br. Dupage River in DuPage County, Illinois. It was built in 1990, so it is 35 years old, younger 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 6 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 10,300 vehicles a day, roughly 4% of them trucks, projected to reach 8,181 by 2046. The structure is 186 ft (56.8 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFAU-1485 (diehl RD
CrossesW. Br. Dupage River
Location0.6 MI W Winfield RD
CountyDuPage County
StateIllinois
Coordinates41.80504, -88.17769
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating71.8 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length186 ft (56.8 m)
Longest span60 ft (18.3 m)
Deck width66 ft (20.1 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,300 (2024)
Projected traffic8,181 by 2046
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU-1485 (diehl RD over W. Br. Dupage River built?

It was built in 1990, making it 35 years old in 2025.

What condition is FAU-1485 (diehl RD over W. Br. Dupage River 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 September 2024.

How much traffic does FAU-1485 (diehl RD over W. Br. Dupage River carry?

About 10,300 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is FAU-1485 (diehl RD over W. Br. Dupage River?

The structure is 186 ft (56.8 m) long with a longest span of 60 ft (18.3 m) and a deck 66 ft wide.

Who owns FAU-1485 (diehl RD over W. Br. Dupage River?

It is owned by the County Highway Agency.