US Bridges

I- 80 WB over I- 55

Fair

Will County, Illinois · 4 M E Grundy CO Lin · Structure no. 099004500000000

Built
1960
65 years old, rebuilt 1993
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
239 ft
4 main spans
Daily traffic
20,400
2023 count
Owner
State
State Highway Agency

About this bridge

I- 80 WB over I- 55 is a steel continuous stringer/multi-beam or girder carrying I- 80 WB over I- 55 in Will County, Illinois. It was built in 1960 and reconstructed in 1993, so it is 65 years old, older 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 20,400 vehicles a day, roughly 39% of them trucks, projected to reach 45,072 by 2046. The structure is 239 ft (72.9 m) long and 51 ft wide.

CarriesI- 80 WB
CrossesI- 55
Location4 M E Grundy CO Lin
RouteInterstate 80
Coordinates41.48621, -88.1973
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.8 US tons
Inventory rating42.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length239 ft (72.9 m)
Longest span74 ft (22.5 m)
Deck width51 ft (15.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,400 (2023)
Projected traffic45,072 by 2046
Trucks39%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I- 80 WB over I- 55 built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1993.

What condition is I- 80 WB over I- 55 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 2024.

How much traffic does I- 80 WB over I- 55 carry?

About 20,400 vehicles per day (2023 count), of which roughly 39% are trucks.

How long is I- 80 WB over I- 55?

The structure is 239 ft (72.9 m) long with a longest span of 74 ft (22.5 m) and a deck 51 ft wide.

Who owns I- 80 WB over I- 55?

It is owned by the State Highway Agency.