US Bridges

I-88 over I-355

Fair

DuPage County, Illinois · 0.4 M.N. of US-34 · Structure no. 022997200000000

Built
1989
36 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
278 ft
2 main spans
Daily traffic
169,900
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-88 over I-355 is a prestressed concrete continuous stringer/multi-beam or girder carrying I-88 over 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 169,900 vehicles a day, roughly 11% of them trucks, projected to reach 137,057 by 2046. The structure is 278 ft (84.7 m) long and 132 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-88
CrossesI-355
Location0.4 M.N. of US-34
RouteInterstate 88
CountyDuPage County
StateIllinois
Coordinates41.80991, -88.05103
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckOther
Main spans2
Design loadUnknown
Structure length278 ft (84.7 m)
Longest span139 ft (42.4 m)
Deck width132 ft (40.2 m)
Roadway width126 ft (38.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic169,900 (2023)
Projected traffic137,057 by 2046
Trucks11%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 over I-355 built?

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

What condition is I-88 over 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 September 2024.

How much traffic does I-88 over I-355 carry?

About 169,900 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is I-88 over I-355?

The structure is 278 ft (84.7 m) long with a longest span of 139 ft (42.4 m) and a deck 132 ft wide.

Who owns I-88 over I-355?

It is owned by the State Toll Authority.