100th ST over Calumet River
PoorCook County, Illinois · 3300 E 100th Street · Structure no. 016604200000000
- Built
- 1927
- 98 years old, rebuilt 1992
- Condition
- Poor
- inspected August 2023
- Type
- Movable - Bascule
- Steel
- Length
- 326 ft
- 1 main span
- Daily traffic
- 3,100
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
100th ST over Calumet River is a steel movable - bascule carrying 100th ST over Calumet River in Cook County, Illinois. It was built in 1927 and reconstructed in 1992, so it is 98 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 3,100 vehicles a day, roughly 7% of them trucks, projected to reach 4,040 by 2046. The structure is 326 ft (99.5 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 100th ST over Calumet River built?
It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1992.
What condition is 100th ST over Calumet River 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 2023.
How much traffic does 100th ST over Calumet River carry?
About 3,100 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is 100th ST over Calumet River?
The structure is 326 ft (99.5 m) long with a longest span of 234 ft (71.2 m) and a deck 62 ft wide.
Who owns 100th ST over Calumet River?
It is owned by the City or Municipal Highway Agency.