US Bridges

Green Bay RD over N Shore Channel

Fair

Cook County, Illinois · 0.2 M N Simpson · Structure no. 016028900000000

Built
1936
89 years old, rebuilt 1989
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
146 ft
3 main spans
Daily traffic
10,150
2022 count
Owner
State
State Highway Agency

About this bridge

Green Bay RD over N Shore Channel is a steel stringer/multi-beam or girder carrying Green Bay RD over N Shore Channel in Cook County, Illinois. It was built in 1936 and reconstructed in 1989, so it is 89 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 10,150 vehicles a day, roughly 4% of them trucks, projected to reach 20,806 by 2046. The structure is 146 ft (44.5 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGreen Bay RD
CrossesN Shore Channel
Location0.2 M N Simpson
CountyCook County
StateIllinois
Coordinates42.05927, -87.69455
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span70 ft (21.3 m)
Deck width62 ft (19 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,150 (2022)
Projected traffic20,806 by 2046
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$2.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Green Bay RD over N Shore Channel built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1989.

What condition is Green Bay RD over N Shore Channel 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 January 2024.

How much traffic does Green Bay RD over N Shore Channel carry?

About 10,150 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Green Bay RD over N Shore Channel?

The structure is 146 ft (44.5 m) long with a longest span of 70 ft (21.3 m) and a deck 62 ft wide.

Who owns Green Bay RD over N Shore Channel?

It is owned by the State Highway Agency.