US Bridges

Cottage Grove Ave over North Creek

Fair

Cook County, Illinois · 0.5 M S 183rd P2 · Structure no. 016304100000000

Built
1940
85 years old, rebuilt 1971
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
135 ft
1 main span
Daily traffic
4,500
2022 count
Owner
County
County Highway Agency

About this bridge

Cottage Grove Ave over North Creek is a steel continuous stringer/multi-beam or girder carrying Cottage Grove Ave over North Creek in Cook County, Illinois. It was built in 1940 and reconstructed in 1971, 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 4,500 vehicles a day, roughly 5% of them trucks, projected to reach 3,889 by 2046. The structure is 135 ft (41.1 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCottage Grove Ave
CrossesNorth Creek
Location0.5 M S 183rd P2
CountyCook County
StateIllinois
Coordinates41.55656, -87.59598
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+3 approach)
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span52 ft (15.7 m)
Deck width59 ft (18 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2022)
Projected traffic3,889 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway 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 Cottage Grove Ave over North Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1971.

What condition is Cottage Grove Ave over North Creek 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 2023.

How much traffic does Cottage Grove Ave over North Creek carry?

About 4,500 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Cottage Grove Ave over North Creek?

The structure is 135 ft (41.1 m) long with a longest span of 52 ft (15.7 m) and a deck 59 ft wide.

Who owns Cottage Grove Ave over North Creek?

It is owned by the County Highway Agency.