US Bridges

Kinzie ST over N Br Chicago Riv

Poor

Cook County, Illinois · 423 W Kinzie · Structure no. 016602800000000

Built
1909
116 years old, rebuilt 1999
Condition
Poor
inspected September 2023
Type
Movable - Bascule
Steel
Length
197 ft
1 main span
Daily traffic
6,350
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Kinzie ST over N Br Chicago Riv is a steel movable - bascule carrying Kinzie ST over N Br Chicago Riv in Cook County, Illinois. It was built in 1909 and reconstructed in 1999, so it is 116 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,350 vehicles a day, roughly 13% of them trucks, projected to reach 7,474 by 2046. The structure is 197 ft (60 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesKinzie ST
CrossesN Br Chicago Riv
Location423 W Kinzie
Coordinates41.88907, -87.63941
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckOpen grating
Main spans1 (+2 approach)
Design loadHS 20
Structure length197 ft (60 m)
Longest span136 ft (41.5 m)
Deck width60 ft (18.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deck12 ft (3.5 m)

Traffic and service

Average daily traffic6,350 (2022)
Projected traffic7,474 by 2046
Trucks13%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$927,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Kinzie ST over N Br Chicago Riv built?

It was built in 1909, making it 116 years old in 2025. It was reconstructed in 1999.

What condition is Kinzie ST over N Br Chicago Riv in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does Kinzie ST over N Br Chicago Riv carry?

About 6,350 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Kinzie ST over N Br Chicago Riv?

The structure is 197 ft (60 m) long with a longest span of 136 ft (41.5 m) and a deck 60 ft wide.

Who owns Kinzie ST over N Br Chicago Riv?

It is owned by the City or Municipal Highway Agency.