US Bridges

I-355 SB to I-80 E over I- 80

Fair

Will County, Illinois · I-80 & I-355 Interch · Structure no. 099031800000000

Built
2007
18 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
246 ft
2 main spans
Daily traffic
24,350
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-355 SB to I-80 E over I- 80 is a prestressed concrete continuous stringer/multi-beam or girder carrying I-355 SB to I-80 E over I- 80 in Will County, Illinois. It was built in 2007, so it is 18 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 24,350 vehicles a day, roughly 20% of them trucks, projected to reach 19,944 by 2046. The structure is 246 ft (75 m) long and 43 ft wide.

Location

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CarriesI-355 SB to I-80 E
CrossesI- 80
LocationI-80 & I-355 Interch
RouteInterstate 355
CountyWill County
StateIllinois
Coordinates41.53847, -87.9623
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 rating67.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length246 ft (75 m)
Longest span123 ft (37.5 m)
Deck width43 ft (13.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,350 (2023)
Projected traffic19,944 by 2046
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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-355 SB to I-80 E over I- 80 built?

It was built in 2007, making it 18 years old in 2025.

What condition is I-355 SB to I-80 E over I- 80 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 I-355 SB to I-80 E over I- 80 carry?

About 24,350 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is I-355 SB to I-80 E over I- 80?

The structure is 246 ft (75 m) long with a longest span of 123 ft (37.5 m) and a deck 43 ft wide.

Who owns I-355 SB to I-80 E over I- 80?

It is owned by the State Toll Authority.