Lake Shore Drive over Main Br Chicago Riv
PoorPosted for loadCook County, Illinois · 402 N & 520 E · Structure no. 016603000000000
- Built
- 1937
- 88 years old, rebuilt 1988
- Condition
- Poor
- inspected September 2024
- Type
- Movable - Bascule
- Steel
- Length
- 352 ft
- 1 main span
- Daily traffic
- 102,000
- 2024 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Lake Shore Drive over Main Br Chicago Riv is a steel movable - bascule carrying Lake Shore Drive over Main Br Chicago Riv in Cook County, Illinois. It was built in 1937 and reconstructed in 1988, so it is 88 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. Its operating status is: posted for load restriction.
It carries about 102,000 vehicles a day, roughly 1% of them trucks, projected to reach 98,576 by 2046. The structure is 352 ft (107.4 m) long and 107 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Lake Shore Drive over Main Br Chicago Riv built?
It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1988.
What condition is Lake Shore Drive over Main 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 2024.
How much traffic does Lake Shore Drive over Main Br Chicago Riv carry?
About 102,000 vehicles per day (2024 count), of which roughly 1% are trucks.
How long is Lake Shore Drive over Main Br Chicago Riv?
The structure is 352 ft (107.4 m) long with a longest span of 264 ft (80.5 m) and a deck 107 ft wide.
Who owns Lake Shore Drive over Main Br Chicago Riv?
It is owned by the City or Municipal Highway Agency.