Harlem Ave NB Ill over San & Ship Canal
PoorCook County, Illinois · 0.1 M N I55 · Structure no. 016031500000000
- Built
- 1931
- 94 years old, rebuilt 1990
- Condition
- Poor
- inspected August 2024
- Type
- Movable - Bascule
- Steel
- Length
- 456 ft
- 1 main span
- Daily traffic
- 35,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Harlem Ave NB Ill over San & Ship Canal is a steel movable - bascule carrying Harlem Ave NB Ill over San & Ship Canal in Cook County, Illinois. It was built in 1931 and reconstructed in 1990, so it is 94 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 4 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 35,500 vehicles a day, roughly 5% of them trucks, projected to reach 18,079 by 2046. The structure is 456 ft (139.1 m) long and 73 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
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.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Harlem Ave NB Ill over San & Ship Canal built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1990.
What condition is Harlem Ave NB Ill over San & Ship Canal 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 August 2024.
How much traffic does Harlem Ave NB Ill over San & Ship Canal carry?
About 35,500 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Harlem Ave NB Ill over San & Ship Canal?
The structure is 456 ft (139.1 m) long with a longest span of 224 ft (68.3 m) and a deck 73 ft wide.
Who owns Harlem Ave NB Ill over San & Ship Canal?
It is owned by the State Highway Agency.