Ill 53 FAP 846 over Mazon River
FairGrundy County, Illinois · 1.3 M N of Gardner · Structure no. 032002300000000
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 200 ft
- 4 main spans
- Daily traffic
- 1,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 53 FAP 846 over Mazon River is a steel continuous stringer/multi-beam or girder carrying Ill 53 FAP 846 over Mazon River in Grundy County, Illinois. It was built in 1969, so it is 56 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 5 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 1,400 vehicles a day, roughly 14% of them trucks, projected to reach 1,740 by 2046. The structure is 200 ft (61.1 m) long and 46 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 |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Ill 53 FAP 846 over Mazon River built?
It was built in 1969, making it 56 years old in 2025.
What condition is Ill 53 FAP 846 over Mazon River 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 January 2024.
How much traffic does Ill 53 FAP 846 over Mazon River carry?
About 1,400 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is Ill 53 FAP 846 over Mazon River?
The structure is 200 ft (61.1 m) long with a longest span of 53 ft (16.2 m) and a deck 46 ft wide.
Who owns Ill 53 FAP 846 over Mazon River?
It is owned by the State Highway Agency.