Il 100/106 over Illinois River
PoorPosted for loadScott County, Illinois · E Edge Florence · Structure no. 086000100000000
- Built
- 1929
- 96 years old, rebuilt 2004
- Condition
- Poor
- inspected May 2024
- Type
- Movable - Lift
- Steel
- Length
- 3,179 ft
- 1 main span
- Daily traffic
- 1,850
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Il 100/106 over Illinois River is a steel movable - lift carrying Il 100/106 over Illinois River in Scott County, Illinois. It was built in 1929 and reconstructed in 2004, so it is 96 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 2 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. Its operating status is: posted for load restriction.
It carries about 1,850 vehicles a day, roughly 20% of them trucks, projected to reach 1,869 by 2046. The structure is 3,179 ft (968.9 m) long and 25 ft wide. If it were closed, the detour would be 14.3 mi (23 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 | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 100/106 over Illinois River built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 2004.
What condition is Il 100/106 over Illinois River 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 May 2024.
How much traffic does Il 100/106 over Illinois River carry?
About 1,850 vehicles per day (2021 count), of which roughly 20% are trucks.
How long is Il 100/106 over Illinois River?
The structure is 3,179 ft (968.9 m) long with a longest span of 217 ft (66.1 m) and a deck 25 ft wide.
Who owns Il 100/106 over Illinois River?
It is owned by the State Highway Agency.