I-180 NB over Iais RR I & M Canal
PoorBureau County, Illinois · 0.74 MI S Il 26 · Structure no. 006005000000000
- Built
- 1968
- 57 years old
- Condition
- Poor
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 717 ft
- 12 main spans
- Daily traffic
- 2,075
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-180 NB over Iais RR I & M Canal is a prestressed concrete stringer/multi-beam or girder carrying I-180 NB over Iais RR I & M Canal in Bureau County, Illinois. It was built in 1968, so it is 57 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 2,075 vehicles a day, roughly 23% of them trucks, projected to reach 1,793 by 2046. The structure is 717 ft (218.5 m) long and 43 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 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 I-180 NB over Iais RR I & M Canal built?
It was built in 1968, making it 57 years old in 2025.
What condition is I-180 NB over Iais RR I & M Canal 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 June 2024.
How much traffic does I-180 NB over Iais RR I & M Canal carry?
About 2,075 vehicles per day (2023 count), of which roughly 23% are trucks.
How long is I-180 NB over Iais RR I & M Canal?
The structure is 717 ft (218.5 m) long with a longest span of 60 ft (18.4 m) and a deck 43 ft wide.
Who owns I-180 NB over Iais RR I & M Canal?
It is owned by the State Highway Agency.