Old Mazon RD TR 12 over W Fk Mazon River
PoorGrundy County, Illinois · .4 MI S Sucker Road · Structure no. 032503100000000
- Built
- 1983
- 42 years old
- Condition
- Poor
- inspected October 2024
- Type
- Channel Beam
- Concrete
- Length
- 134 ft
- 4 main spans
- Daily traffic
- 75
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Old Mazon RD TR 12 over W Fk Mazon River is a concrete channel beam carrying Old Mazon RD TR 12 over W Fk Mazon River in Grundy County, Illinois. It was built in 1983, so it is 42 years old, younger 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 3 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 75 vehicles a day, roughly 28% of them trucks, projected to reach 330 by 2046. The structure is 134 ft (40.8 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Mazon RD TR 12 over W Fk Mazon River built?
It was built in 1983, making it 42 years old in 2025.
What condition is Old Mazon RD TR 12 over W Fk Mazon 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 October 2024.
How much traffic does Old Mazon RD TR 12 over W Fk Mazon River carry?
About 75 vehicles per day (2024 count), of which roughly 28% are trucks.
How long is Old Mazon RD TR 12 over W Fk Mazon River?
The structure is 134 ft (40.8 m) long with a longest span of 34 ft (10.4 m) and a deck 26 ft wide.
Who owns Old Mazon RD TR 12 over W Fk Mazon River?
It is owned by the Town or Township Highway Agency.