Alpine RD over Cn Railroad
FairWinnebago County, Illinois · 0.5 MI S Harrison Av · Structure no. 101010200000000
- Built
- 1963
- 62 years old, rebuilt 2001
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 152 ft
- 3 main spans
- Daily traffic
- 21,200
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Alpine RD over Cn Railroad is a steel continuous stringer/multi-beam or girder carrying Alpine RD over Cn Railroad in Winnebago County, Illinois. It was built in 1963 and reconstructed in 2001, so it is 62 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 21,200 vehicles a day, roughly 6% of them trucks, projected to reach 24,240 by 2046. The structure is 152 ft (46.2 m) long and 68 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Alpine RD over Cn Railroad built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2001.
What condition is Alpine RD over Cn Railroad in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.
How much traffic does Alpine RD over Cn Railroad carry?
About 21,200 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is Alpine RD over Cn Railroad?
The structure is 152 ft (46.2 m) long with a longest span of 54 ft (16.5 m) and a deck 68 ft wide.
Who owns Alpine RD over Cn Railroad?
It is owned by the State Highway Agency.