Mill RD over Piscasaw Creek
PoorBoone County, Illinois · 1.5 MI S of Capron · Structure no. 004306600000000
- Built
- 1975
- 50 years old
- Condition
- Poor
- inspected July 2024
- Type
- Channel Beam
- Concrete
- Length
- 122 ft
- 4 main spans
- Daily traffic
- 125
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Mill RD over Piscasaw Creek is a concrete channel beam carrying Mill RD over Piscasaw Creek in Boone County, Illinois. It was built in 1975, so it is 50 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 125 vehicles a day, roughly 27% of them trucks, projected to reach 156 by 2046. The structure is 122 ft (37.2 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 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 Mill RD over Piscasaw Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is Mill RD over Piscasaw Creek 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 July 2024.
How much traffic does Mill RD over Piscasaw Creek carry?
About 125 vehicles per day (2023 count), of which roughly 27% are trucks.
How long is Mill RD over Piscasaw Creek?
The structure is 122 ft (37.2 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.
Who owns Mill RD over Piscasaw Creek?
It is owned by the Town or Township Highway Agency.