US Bridges

Northgate Pkwy. over Buffalo Creek

Fair

Cook County, Illinois · 0.11M.N. IL-68 · Structure no. 016821200000000

Built
1988
37 years old, rebuilt 2013
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
90 ft
3 main spans
Daily traffic
8,100
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Northgate Pkwy. over Buffalo Creek is a concrete slab carrying Northgate Pkwy. over Buffalo Creek in Cook County, Illinois. It was built in 1988 and reconstructed in 2013, so it is 37 years old, younger 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 8,100 vehicles a day, roughly 9% of them trucks, projected to reach 8,181 by 2046. The structure is 90 ft (27.3 m) long and 55 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNorthgate Pkwy.
CrossesBuffalo Creek
Location0.11M.N. IL-68
RouteCity Street 0
CountyCook County
StateIllinois
Coordinates42.14085, -87.92583
Functional classRural Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length90 ft (27.3 m)
Longest span33 ft (10.2 m)
Deck width55 ft (16.9 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,100 (2018)
Projected traffic8,181 by 2046
Trucks9%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Northgate Pkwy. over Buffalo Creek built?

It was built in 1988, making it 37 years old in 2025. It was reconstructed in 2013.

What condition is Northgate Pkwy. over Buffalo 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 March 2023.

How much traffic does Northgate Pkwy. over Buffalo Creek carry?

About 8,100 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is Northgate Pkwy. over Buffalo Creek?

The structure is 90 ft (27.3 m) long with a longest span of 33 ft (10.2 m) and a deck 55 ft wide.

Who owns Northgate Pkwy. over Buffalo Creek?

It is owned by the City or Municipal Highway Agency.