Roscoe RD over Rock River
PoorWinnebago County, Illinois · 0.2 Mi. W. Il 251 · Structure no. 101301600000000
- Built
- 1967
- 58 years old
- Condition
- Poor
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 581 ft
- 5 main spans
- Daily traffic
- 10,700
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Roscoe RD over Rock River is a steel continuous stringer/multi-beam or girder carrying Roscoe RD over Rock River in Winnebago County, Illinois. It was built in 1967, so it is 58 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 2 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. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 10,700 vehicles a day, roughly 1% of them trucks, projected to reach 9,949 by 2046. The structure is 581 ft (177.1 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Roscoe RD over Rock River built?
It was built in 1967, making it 58 years old in 2025.
What condition is Roscoe RD over Rock River 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 Roscoe RD over Rock River carry?
About 10,700 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Roscoe RD over Rock River?
The structure is 581 ft (177.1 m) long with a longest span of 115 ft (35.1 m) and a deck 36 ft wide.
Who owns Roscoe RD over Rock River?
It is owned by the County Highway Agency.