US Bridges

75th ST over W. Br. Dupage River

Fair

DuPage County, Illinois · 0.1M E of Wash ST · Structure no. 022311800000000

Built
2010
15 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
156 ft
3 main spans
Daily traffic
36,800
2024 count
Owner
County
County Highway Agency

About this bridge

75th ST over W. Br. Dupage River is a steel continuous stringer/multi-beam or girder carrying 75th ST over W. Br. Dupage River in DuPage County, Illinois. It was built in 2010, so it is 15 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 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 36,800 vehicles a day, roughly 7% of them trucks, projected to reach 31,613 by 2046. The structure is 156 ft (47.5 m) long and 138 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries75th ST
CrossesW. Br. Dupage River
Location0.1M E of Wash ST
CountyDuPage County
StateIllinois
Coordinates41.74828, -88.12944
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 alignment9: Superior to present desirable criteria
Operating rating105.1 US tons
Inventory rating63.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span60 ft (18.4 m)
Deck width138 ft (42.1 m)
Roadway width115 ft (35.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,800 (2024)
Projected traffic31,613 by 2046
Trucks7%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 75th ST over W. Br. Dupage River built?

It was built in 2010, making it 15 years old in 2025.

What condition is 75th ST 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 April 2023.

How much traffic does 75th ST over W. Br. Dupage River carry?

About 36,800 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is 75th ST over W. Br. Dupage River?

The structure is 156 ft (47.5 m) long with a longest span of 60 ft (18.4 m) and a deck 138 ft wide.

Who owns 75th ST over W. Br. Dupage River?

It is owned by the County Highway Agency.