Ill 251 S B over UP RR
PoorWinnebago County, Illinois · 2.5 MI South Ill 75 · Structure no. 101002900000000
- Built
- 1967
- 58 years old
- Condition
- Poor
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 423 ft
- 5 main spans
- Daily traffic
- 13,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 251 S B over UP RR is a steel continuous stringer/multi-beam or girder carrying Ill 251 S B over UP RR 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 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 13,000 vehicles a day, roughly 5% of them trucks, projected to reach 6,767 by 2046. The structure is 423 ft (128.9 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 251 S B over UP RR built?
It was built in 1967, making it 58 years old in 2025.
What condition is Ill 251 S B over UP RR 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 February 2024.
How much traffic does Ill 251 S B over UP RR carry?
About 13,000 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Ill 251 S B over UP RR?
The structure is 423 ft (128.9 m) long with a longest span of 108 ft (32.9 m) and a deck 36 ft wide.
Who owns Ill 251 S B over UP RR?
It is owned by the State Highway Agency.