US Bridges

I-88 WB to I-355 N over Finley RD

Fair

DuPage County, Illinois · 1.1 M.N. of US-34 · Structure no. 022996700000000

Built
1989
36 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
174 ft
3 main spans
Daily traffic
8,800
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-88 WB to I-355 N over Finley RD is a prestressed concrete stringer/multi-beam or girder carrying I-88 WB to I-355 N over Finley RD in DuPage County, Illinois. It was built in 1989, so it is 36 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 8,800 vehicles a day, roughly 13% of them trucks, projected to reach 7,373 by 2046. The structure is 174 ft (53 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-88 WB to I-355 N
CrossesFinley RD
Location1.1 M.N. of US-34
CountyDuPage County
StateIllinois
Coordinates41.82411, -88.02524
Functional classUrban Principal Arterial - Interstate

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.
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 inspectionSeptember 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length174 ft (53 m)
Longest span77 ft (23.5 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (2023)
Projected traffic7,373 by 2046
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 I-88 WB to I-355 N over Finley RD built?

It was built in 1989, making it 36 years old in 2025.

What condition is I-88 WB to I-355 N over Finley RD 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 I-88 WB to I-355 N over Finley RD carry?

About 8,800 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is I-88 WB to I-355 N over Finley RD?

The structure is 174 ft (53 m) long with a longest span of 77 ft (23.5 m) and a deck 36 ft wide.

Who owns I-88 WB to I-355 N over Finley RD?

It is owned by the State Toll Authority.