US Bridges

Lake Shore DR over Montrose Ave

Fair

Cook County, Illinois · 4400 N.& 646 W. · Structure no. 016618500000000

Built
1940
85 years old, rebuilt 1967
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
83,800
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lake Shore DR over Montrose Ave is a steel stringer/multi-beam or girder carrying Lake Shore DR over Montrose Ave in Cook County, Illinois. It was built in 1940 and reconstructed in 1967, so it is 85 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 83,800 vehicles a day, roughly 2% of them trucks, projected to reach 83,729 by 2046. The structure is 65 ft (19.7 m) long and 130 ft wide.

Location

Open in Google Maps
CarriesLake Shore DR
CrossesMontrose Ave
Location4400 N.& 646 W.
RouteU.S. Route 41
CountyCook County
StateIllinois
Coordinates41.96204, -87.64648
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length65 ft (19.7 m)
Longest span61 ft (18.7 m)
Deck width130 ft (39.7 m)
Roadway width118 ft (36 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83,800 (2024)
Projected traffic83,729 by 2046
Trucks2%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Lake Shore DR over Montrose Ave built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1967.

What condition is Lake Shore DR over Montrose Ave 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 July 2024.

How much traffic does Lake Shore DR over Montrose Ave carry?

About 83,800 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Lake Shore DR over Montrose Ave?

The structure is 65 ft (19.7 m) long with a longest span of 61 ft (18.7 m) and a deck 130 ft wide.

Who owns Lake Shore DR over Montrose Ave?

It is owned by the City or Municipal Highway Agency.