TR-173 (scott Rd) over Malgren Drain
PoorKane County, Illinois · 1.5 MI NW Big Rock · Structure no. 045311100000000
- Built
- 1978
- 47 years old
- Condition
- Poor
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 175
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR-173 (scott Rd) over Malgren Drain is a prestressed concrete box beam or girders - multiple carrying TR-173 (scott Rd) over Malgren Drain in Kane County, Illinois. It was built in 1978, so it is 47 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 4 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 175 vehicles a day, roughly 11% of them trucks, projected to reach 122 by 2046. The structure is 34 ft (10.5 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR-173 (scott Rd) over Malgren Drain built?
It was built in 1978, making it 47 years old in 2025.
What condition is TR-173 (scott Rd) over Malgren Drain 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 April 2023.
How much traffic does TR-173 (scott Rd) over Malgren Drain carry?
About 175 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is TR-173 (scott Rd) over Malgren Drain?
The structure is 34 ft (10.5 m) long with a longest span of 32 ft (9.7 m) and a deck 27 ft wide.
Who owns TR-173 (scott Rd) over Malgren Drain?
It is owned by the Town or Township Highway Agency.