US Bridges

US 45 over I- 80

Fair

Will County, Illinois · 3.2 M N of US-30 · Structure no. 099011500000000

Built
1967
58 years old, rebuilt 2003
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
283 ft
4 main spans
Daily traffic
46,600
2023 count
Owner
State
State Highway Agency

About this bridge

US 45 over I- 80 is a steel continuous stringer/multi-beam or girder carrying US 45 over I- 80 in Will County, Illinois. It was built in 1967 and reconstructed in 2003, 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 46,600 vehicles a day, roughly 7% of them trucks, projected to reach 63,792 by 2046. The structure is 283 ft (86.2 m) long and 108 ft wide.

CarriesUS 45
CrossesI- 80
Location3.2 M N of US-30
RouteU.S. Route 45
Coordinates41.55289, -87.85341
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating57.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length283 ft (86.2 m)
Longest span91 ft (27.6 m)
Deck width108 ft (33 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,600 (2023)
Projected traffic63,792 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 SystemYes

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 US 45 over I- 80 built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2003.

What condition is US 45 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 February 2023.

How much traffic does US 45 over I- 80 carry?

About 46,600 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US 45 over I- 80?

The structure is 283 ft (86.2 m) long with a longest span of 91 ft (27.6 m) and a deck 108 ft wide.

Who owns US 45 over I- 80?

It is owned by the State Highway Agency.