TR159A Stonewall R over Trib E Fk Mazon Riv
PoorGrundy County, Illinois · 0.30 MI W of CH-16 · Structure no. 032591500000000
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected October 2024
- Type
- Channel Beam
- Concrete
- Length
- 86 ft
- 3 main spans
- Daily traffic
- 50
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR159A Stonewall R over Trib E Fk Mazon Riv is a concrete channel beam carrying TR159A Stonewall R over Trib E Fk Mazon Riv in Grundy 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 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 50 vehicles a day, roughly 20% of them trucks, projected to reach 60 by 2046. The structure is 86 ft (26.2 m) long and 23 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR159A Stonewall R over Trib E Fk Mazon Riv built?
It was built in 1974, making it 51 years old in 2025.
What condition is TR159A Stonewall R over Trib E Fk Mazon Riv 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 TR159A Stonewall R over Trib E Fk Mazon Riv carry?
About 50 vehicles per day (2024 count), of which roughly 20% are trucks.
How long is TR159A Stonewall R over Trib E Fk Mazon Riv?
The structure is 86 ft (26.2 m) long with a longest span of 28 ft (8.5 m) and a deck 23 ft wide.
Who owns TR159A Stonewall R over Trib E Fk Mazon Riv?
It is owned by the Town or Township Highway Agency.