US Bridges

I-355 NB & SB over IL-38

Fair

DuPage County, Illinois · 1M.E.OF IL-53 · Structure no. 022996200000000

Built
1989
36 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
232 ft
2 main spans
Daily traffic
126,000
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-355 NB & SB over IL-38 is a prestressed concrete stringer/multi-beam or girder carrying I-355 NB & SB over IL-38 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 126,000 vehicles a day, roughly 10% of them trucks, projected to reach 96,455 by 2046. The structure is 232 ft (70.7 m) long and 128 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-355 NB & SB
CrossesIL-38
Location1M.E.OF IL-53
RouteInterstate 355
CountyDuPage County
StateIllinois
Coordinates41.85934, -88.04165
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length232 ft (70.7 m)
Longest span116 ft (35.4 m)
Deck width128 ft (39 m)
Roadway width120 ft (36.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic126,000 (2023)
Projected traffic96,455 by 2046
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$570,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-355 NB & SB over IL-38 built?

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

What condition is I-355 NB & SB over IL-38 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-355 NB & SB over IL-38 carry?

About 126,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is I-355 NB & SB over IL-38?

The structure is 232 ft (70.7 m) long with a longest span of 116 ft (35.4 m) and a deck 128 ft wide.

Who owns I-355 NB & SB over IL-38?

It is owned by the State Toll Authority.