FAS 1273/DUPONT RD over Armstrong Run
PoorGrundy County, Illinois · 0.27 MI E CO Line · Structure no. 032311500000000
- Built
- 2006
- 19 years old
- Condition
- Poor
- inspected September 2024
- Type
- Channel Beam
- Concrete
- Length
- 95 ft
- 3 main spans
- Daily traffic
- 250
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
FAS 1273/DUPONT RD over Armstrong Run is a concrete channel beam carrying FAS 1273/DUPONT RD over Armstrong Run in Grundy County, Illinois. It was built in 2006, so it is 19 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 250 vehicles a day, roughly 52% of them trucks, projected to reach 1,380 by 2046. The structure is 95 ft (29 m) long and 30 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 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 | 8 Very Good | No problems noted. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAS 1273/DUPONT RD over Armstrong Run built?
It was built in 2006, making it 19 years old in 2025.
What condition is FAS 1273/DUPONT RD over Armstrong Run 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 September 2024.
How much traffic does FAS 1273/DUPONT RD over Armstrong Run carry?
About 250 vehicles per day (2024 count), of which roughly 52% are trucks.
How long is FAS 1273/DUPONT RD over Armstrong Run?
The structure is 95 ft (29 m) long with a longest span of 31 ft (9.4 m) and a deck 30 ft wide.
Who owns FAS 1273/DUPONT RD over Armstrong Run?
It is owned by the County Highway Agency.