Ill 17 over Mazon R
FairLivingston County, Illinois · 3.76 MI W of Ill 47 · Structure no. 053200600000000
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected February 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 1,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 17 over Mazon R is a concrete continuous culvert carrying Ill 17 over Mazon R in Livingston County, Illinois. It was built in 1971, so it is 54 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,800 vehicles a day, roughly 23% of them trucks, projected to reach 1,616 by 2046. The structure is 25 ft (7.6 m) long and 56 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 17 over Mazon R built?
It was built in 1971, making it 54 years old in 2025.
What condition is Ill 17 over Mazon R in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.
How much traffic does Ill 17 over Mazon R carry?
About 1,800 vehicles per day (2023 count), of which roughly 23% are trucks.
How long is Ill 17 over Mazon R?
The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 56 ft wide.
Who owns Ill 17 over Mazon R?
It is owned by the State Highway Agency.