US Bridges

I- 55 WB over Joliet RD EB

Fair

Cook County, Illinois · 2.1 M SW US 45 · Structure no. 016000100000000

Built
1962
63 years old, rebuilt 1996
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
276 ft
3 main spans
Daily traffic
62,000
2024 count
Owner
State
State Highway Agency

About this bridge

I- 55 WB over Joliet RD EB is a steel continuous stringer/multi-beam or girder carrying I- 55 WB over Joliet RD EB in Cook County, Illinois. It was built in 1962 and reconstructed in 1996, so it is 63 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 62,000 vehicles a day, roughly 11% of them trucks, projected to reach 61,151 by 2046. The structure is 276 ft (84 m) long and 63 ft wide.

CarriesI- 55 WB
CrossesJoliet RD EB
Location2.1 M SW US 45
RouteInterstate 55
Coordinates41.75925, -87.90792
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.7 US tons
Inventory rating56.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length276 ft (84 m)
Longest span93 ft (28.2 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62,000 (2024)
Projected traffic61,151 by 2046
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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- 55 WB over Joliet RD EB built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1996.

What condition is I- 55 WB over Joliet RD EB 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 December 2024.

How much traffic does I- 55 WB over Joliet RD EB carry?

About 62,000 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is I- 55 WB over Joliet RD EB?

The structure is 276 ft (84 m) long with a longest span of 93 ft (28.2 m) and a deck 63 ft wide.

Who owns I- 55 WB over Joliet RD EB?

It is owned by the State Highway Agency.