US Bridges

Il 171 EB Archer a over I-294

Good

Cook County, Illinois · 0.5 M E of US-12/45 · Structure no. 016187000000000

Built
2021
4 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
319 ft
2 main spans
Daily traffic
19,500
2023 count
Owner
State
State Highway Agency

About this bridge

Il 171 EB Archer a over I-294 is a steel continuous stringer/multi-beam or girder carrying Il 171 EB Archer a over I-294 in Cook County, Illinois. It was built in 2021, so it is 4 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 19,500 vehicles a day, roughly 11% of them trucks, projected to reach 18,483 by 2046. The structure is 319 ft (97.1 m) long and 50 ft wide.

Location

Open in Google Maps
CarriesIl 171 EB Archer a
CrossesI-294
Location0.5 M E of US-12/45
RouteState Highway 171
CountyCook County
StateIllinois
Coordinates41.74614, -87.84385
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length319 ft (97.1 m)
Longest span166 ft (50.6 m)
Deck width50 ft (15.3 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2023)
Projected traffic18,483 by 2046
Trucks11%
Lanes on structure3
Traffic directionOne-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 Il 171 EB Archer a over I-294 built?

It was built in 2021, making it 4 years old in 2025.

What condition is Il 171 EB Archer a over I-294 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does Il 171 EB Archer a over I-294 carry?

About 19,500 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Il 171 EB Archer a over I-294?

The structure is 319 ft (97.1 m) long with a longest span of 166 ft (50.6 m) and a deck 50 ft wide.

Who owns Il 171 EB Archer a over I-294?

It is owned by the State Highway Agency.