US Bridges

55th ST over Il 83

Fair

DuPage County, Illinois · 1.5 M S US 34 · Structure no. 022012600000000

Built
1967
58 years old, rebuilt 2004
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
216 ft
4 main spans
Daily traffic
25,100
2024 count
Owner
State
State Highway Agency

About this bridge

55th ST over Il 83 is a steel continuous stringer/multi-beam or girder carrying 55th ST over Il 83 in DuPage County, Illinois. It was built in 1967 and reconstructed in 2004, so it is 58 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 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 25,100 vehicles a day, roughly 7% of them trucks, projected to reach 21,210 by 2046. The structure is 216 ft (65.9 m) long and 95 ft wide.

Carries55th ST
CrossesIl 83
Location1.5 M S US 34
Coordinates41.78862, -87.94706
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 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 rating79.7 US tons
Inventory rating47.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length216 ft (65.9 m)
Longest span64 ft (19.4 m)
Deck width95 ft (29 m)
Roadway width70 ft (21.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,100 (2024)
Projected traffic21,210 by 2046
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 55th ST over Il 83 built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2004.

What condition is 55th ST over Il 83 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 November 2023.

How much traffic does 55th ST over Il 83 carry?

About 25,100 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is 55th ST over Il 83?

The structure is 216 ft (65.9 m) long with a longest span of 64 ft (19.4 m) and a deck 95 ft wide.

Who owns 55th ST over Il 83?

It is owned by the State Highway Agency.