US Bridges

Mill RD over I-290

Fair

DuPage County, Illinois · 2.6 M W Il 83 · Structure no. 022010900000000

Built
1971
54 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
294 ft
2 main spans
Daily traffic
1,350
2024 count
Owner
State
State Highway Agency

About this bridge

Mill RD over I-290 is a steel continuous stringer/multi-beam or girder carrying Mill RD over I-290 in DuPage County, Illinois. It was built in 1971, so it is 54 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 1,350 vehicles a day, roughly 3% of them trucks, projected to reach 2,374 by 2046. The structure is 294 ft (89.6 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMill RD
CrossesI-290
Location2.6 M W Il 83
Coordinates41.94874, -88.00332
Functional classUrban Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating37.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length294 ft (89.6 m)
Longest span105 ft (32 m)
Deck width46 ft (14 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2024)
Projected traffic2,374 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 Mill RD over I-290 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Mill RD over I-290 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 August 2023.

How much traffic does Mill RD over I-290 carry?

About 1,350 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Mill RD over I-290?

The structure is 294 ft (89.6 m) long with a longest span of 105 ft (32 m) and a deck 46 ft wide.

Who owns Mill RD over I-290?

It is owned by the State Highway Agency.