I-90 NB over Ill RTE 173
GoodWinnebago County, Illinois · 3 MI S of Roscoe · Structure no. 101996300000000
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 208 ft
- 2 main spans
- Daily traffic
- 31,600
- 2023 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
I-90 NB over Ill RTE 173 is a prestressed concrete stringer/multi-beam or girder carrying I-90 NB over Ill RTE 173 in Winnebago County, Illinois. It was built in 2007, so it is 18 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 31,600 vehicles a day, roughly 27% of them trucks, projected to reach 25,503 by 2046. The structure is 208 ft (63.4 m) long and 77 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-90 NB over Ill RTE 173 built?
It was built in 2007, making it 18 years old in 2025.
What condition is I-90 NB over Ill RTE 173 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.
How much traffic does I-90 NB over Ill RTE 173 carry?
About 31,600 vehicles per day (2023 count), of which roughly 27% are trucks.
How long is I-90 NB over Ill RTE 173?
The structure is 208 ft (63.4 m) long with a longest span of 106 ft (32.3 m) and a deck 77 ft wide.
Who owns I-90 NB over Ill RTE 173?
It is owned by the State Toll Authority.