Mill Road over Mill Creek
PoorOgle County, Illinois · 1.7 MI NW of Byron · Structure no. 071324200000000
- Built
- 1980
- 45 years old
- Condition
- Poor
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 110 ft
- 3 main spans
- Daily traffic
- 600
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Mill Road over Mill Creek is a prestressed concrete box beam or girders - multiple carrying Mill Road over Mill Creek in Ogle County, Illinois. It was built in 1980, so it is 45 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 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 600 vehicles a day, roughly 9% of them trucks, projected to reach 546 by 2046. The structure is 110 ft (33.5 m) long and 24 ft wide. If it were closed, the detour would be 39.8 mi (64 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mill Road over Mill Creek built?
It was built in 1980, making it 45 years old in 2025.
What condition is Mill Road over Mill 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 August 2023.
How much traffic does Mill Road over Mill Creek carry?
About 600 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is Mill Road over Mill Creek?
The structure is 110 ft (33.5 m) long with a longest span of 36 ft (11 m) and a deck 24 ft wide.
Who owns Mill Road over Mill Creek?
It is owned by the Town or Township Highway Agency.