Il 99 over Little Missouri Cr.
FairSchuyler County, Illinois · .25M N Brown County · Structure no. 085003100000000
- Built
- 1986
- 39 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 150 ft
- 3 main spans
- Daily traffic
- 500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 99 over Little Missouri Cr. is a prestressed concrete stringer/multi-beam or girder carrying Il 99 over Little Missouri Cr. in Schuyler County, Illinois. It was built in 1986, so it is 39 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 500 vehicles a day, roughly 10% of them trucks, projected to reach 455 by 2046. The structure is 150 ft (45.7 m) long and 35 ft wide. If it were closed, the detour would be 14.9 mi (24 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Il 99 over Little Missouri Cr. built?
It was built in 1986, making it 39 years old in 2025.
What condition is Il 99 over Little Missouri Cr. 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 April 2024.
How much traffic does Il 99 over Little Missouri Cr. carry?
About 500 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Il 99 over Little Missouri Cr.?
The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 35 ft wide.
Who owns Il 99 over Little Missouri Cr.?
It is owned by the State Highway Agency.