US Bridges

Main ST over N Shore Channel

Fair

Cook County, Illinois · Evanston P6 · Structure no. 016970000000000

Built
1908
117 years old, rebuilt 1959
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
224 ft
3 main spans
Daily traffic
11,400
2022 count
Owner
Local
Other Local Agency

About this bridge

Main ST over N Shore Channel is a steel continuous stringer/multi-beam or girder carrying Main ST over N Shore Channel in Cook County, Illinois. It was built in 1908 and reconstructed in 1959, so it is 117 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 11,400 vehicles a day, roughly 2% of them trucks, projected to reach 11,514 by 2046. The structure is 224 ft (68.3 m) long and 56 ft wide.

Location

Open in Google Maps
CarriesMain ST
CrossesN Shore Channel
LocationEvanston P6
CountyCook County
StateIllinois
Coordinates42.03368, -87.71023
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length224 ft (68.3 m)
Longest span87 ft (26.5 m)
Deck width56 ft (17.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,400 (2022)
Projected traffic11,514 by 2046
Trucks2%
Lanes on structure4
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over N Shore Channel built?

It was built in 1908, making it 117 years old in 2025. It was reconstructed in 1959.

What condition is Main ST 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 Main ST over N Shore Channel carry?

About 11,400 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Main ST over N Shore Channel?

The structure is 224 ft (68.3 m) long with a longest span of 87 ft (26.5 m) and a deck 56 ft wide.

Who owns Main ST over N Shore Channel?

It is owned by the Other Local Agency.