US Bridges

Finley RD over I-88 & I-355

Fair

DuPage County, Illinois · 0.2 M.N. of US-34 · Structure no. 022996800000000

Built
1989
36 years old
Condition
Fair
inspected July 2024
Type
Segmental Box Girder
Prestressed Concrete
Length
550 ft
6 main spans
Daily traffic
8,700
2024 count
Owner
County
County Highway Agency

About this bridge

Finley RD over I-88 & I-355 is a prestressed concrete segmental box girder carrying Finley RD over I-88 & I-355 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 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 8,700 vehicles a day, roughly 3% of them trucks, projected to reach 5,505 by 2046. The structure is 550 ft (167.6 m) long and 29 ft wide.

Location

Open in Google Maps
CarriesFinley RD
CrossesI-88 & I-355
Location0.2 M.N. of US-34
CountyDuPage County
StateIllinois
Coordinates41.81032, -88.03618
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete
DeckOther
Main spans6
Design loadHS 20
Structure length550 ft (167.6 m)
Longest span159 ft (48.6 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2024)
Projected traffic5,505 by 2046
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Finley RD over I-88 & I-355 built?

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

What condition is Finley RD over I-88 & I-355 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 July 2024.

How much traffic does Finley RD over I-88 & I-355 carry?

About 8,700 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Finley RD over I-88 & I-355?

The structure is 550 ft (167.6 m) long with a longest span of 159 ft (48.6 m) and a deck 29 ft wide.

Who owns Finley RD over I-88 & I-355?

It is owned by the County Highway Agency.