21st ST over Addison CR
PoorPosted for loadCook County, Illinois · 0.22MI.W. of 17th Av · Structure no. 016665000000000
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected November 2022
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 82 ft
- 3 main spans
- Daily traffic
- 900
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
21st ST over Addison CR is a prestressed concrete box beam or girders - multiple carrying 21st ST over Addison CR in Cook County, Illinois. It was built in 1974, so it is 51 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 2 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 900 vehicles a day, roughly 7% of them trucks, projected to reach 859 by 2046. The structure is 82 ft (25 m) long and 48 ft wide.
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 | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Superstructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 21st ST over Addison CR built?
It was built in 1974, making it 51 years old in 2025.
What condition is 21st ST over Addison CR 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 November 2022.
How much traffic does 21st ST over Addison CR carry?
About 900 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is 21st ST over Addison CR?
The structure is 82 ft (25 m) long with a longest span of 31 ft (9.4 m) and a deck 48 ft wide.
Who owns 21st ST over Addison CR?
It is owned by the City or Municipal Highway Agency.