US Bridges

Maple Ave over N Shore Channel

Fair

Cook County, Illinois · Wilmette · Structure no. 016995900000000

Built
1909
116 years old
Condition
Fair
inspected November 2022
Type
Girder and Floorbeam System
Steel
Length
144 ft
3 main spans
Daily traffic
400
2022 count
Owner
Local
Other Local Agency

About this bridge

Maple Ave over N Shore Channel is a steel girder and floorbeam system carrying Maple Ave over N Shore Channel in Cook County, Illinois. It was built in 1909, so it is 116 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. Its operating status is: open, posting recommended but not legally implemented.

It carries about 400 vehicles a day, roughly 6% of them trucks, projected to reach 202 by 2046. The structure is 144 ft (43.9 m) long and 39 ft wide.

Location

Open in Google Maps
CarriesMaple Ave
CrossesN Shore Channel
LocationWilmette
RouteCity Street 0
CountyCook County
StateIllinois
Coordinates42.07119, -87.68667
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating24.3 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckOpen grating
Main spans3
Design loadUnknown
Structure length144 ft (43.9 m)
Longest span71 ft (21.6 m)
Deck width39 ft (11.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2022)
Projected traffic202 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Maple Ave over N Shore Channel built?

It was built in 1909, making it 116 years old in 2025.

What condition is Maple Ave 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 November 2022.

How much traffic does Maple Ave over N Shore Channel carry?

About 400 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Maple Ave over N Shore Channel?

The structure is 144 ft (43.9 m) long with a longest span of 71 ft (21.6 m) and a deck 39 ft wide.

Who owns Maple Ave over N Shore Channel?

It is owned by the Other Local Agency.