US Bridges

Lake Cook RD over Trib of Buffalo CR

Fair

Cook County, Illinois · 0.7 W Arl Hts P25 · Structure no. 016401100000000

Built
1978
47 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
39,000
2022 count
Owner
County
County Highway Agency

About this bridge

Lake Cook RD over Trib of Buffalo CR is a concrete continuous culvert carrying Lake Cook RD over Trib of Buffalo CR in Cook County, Illinois. It was built in 1978, so it is 47 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 39,000 vehicles a day, roughly 6% of them trucks, projected to reach 50,399 by 2046. The structure is 46 ft (13.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLake Cook RD
CrossesTrib of Buffalo CR
Location0.7 W Arl Hts P25
CountyCook County
StateIllinois
Coordinates42.15358, -87.99666
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating66 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length46 ft (13.9 m)
Longest span15 ft (4.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,000 (2022)
Projected traffic50,399 by 2046
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Lake Cook RD over Trib of Buffalo CR built?

It was built in 1978, making it 47 years old in 2025.

What condition is Lake Cook RD over Trib of Buffalo CR 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 September 2023.

How much traffic does Lake Cook RD over Trib of Buffalo CR carry?

About 39,000 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Lake Cook RD over Trib of Buffalo CR?

The structure is 46 ft (13.9 m) long with a longest span of 15 ft (4.7 m).

Who owns Lake Cook RD over Trib of Buffalo CR?

It is owned by the County Highway Agency.