I 90 WB over Mosquito Crk
FairBoone County, Illinois · 3 MI SE of Belvidere · Structure no. 004995800000000
- Built
- 2013
- 12 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 111 ft
- 1 main span
- Daily traffic
- 28,000
- 2023 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
I 90 WB over Mosquito Crk is a prestressed concrete stringer/multi-beam or girder carrying I 90 WB over Mosquito Crk in Boone County, Illinois. It was built in 2013, so it is 12 years old, younger 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 28,000 vehicles a day, roughly 24% of them trucks, projected to reach 23,296 by 2046. The structure is 111 ft (33.9 m) long and 69 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 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 WB over Mosquito Crk built?
It was built in 2013, making it 12 years old in 2025.
What condition is I 90 WB over Mosquito Crk 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 July 2024.
How much traffic does I 90 WB over Mosquito Crk carry?
About 28,000 vehicles per day (2023 count), of which roughly 24% are trucks.
How long is I 90 WB over Mosquito Crk?
The structure is 111 ft (33.9 m) long with a longest span of 107 ft (32.7 m) and a deck 69 ft wide.
Who owns I 90 WB over Mosquito Crk?
It is owned by the State Toll Authority.