US Bridges

Il 176 over N Br Chicago River

Fair

Lake County, Illinois · 0.7 M E of I-94 · Structure no. 049016900000000

Built
1990
35 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
27 ft
3 main spans
Daily traffic
15,800
2023 count
Owner
State
State Highway Agency

About this bridge

Il 176 over N Br Chicago River is a concrete continuous culvert carrying Il 176 over N Br Chicago River in Lake County, Illinois. It was built in 1990, so it is 35 years old, younger 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 15,800 vehicles a day, roughly 3% of them trucks, projected to reach 14,544 by 2046. The structure is 27 ft (8.2 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIl 176
CrossesN Br Chicago River
Location0.7 M E of I-94
RouteState Highway 176
CountyLake County
StateIllinois
Coordinates42.28001, -87.89853
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,800 (2023)
Projected traffic14,544 by 2046
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$272,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 176 over N Br Chicago River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Il 176 over N Br Chicago River 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 June 2023.

How much traffic does Il 176 over N Br Chicago River carry?

About 15,800 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Il 176 over N Br Chicago River?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m) and a deck 44 ft wide.

Who owns Il 176 over N Br Chicago River?

It is owned by the State Highway Agency.