Ill 18 over Drainage Ditch
PoorPutnam County, Illinois · 0.65 MI E of Ill 26 · Structure no. 078001300000000
- Built
- 1932
- 93 years old, rebuilt 1979
- Condition
- Poor
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 68 ft
- 3 main spans
- Daily traffic
- 2,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 18 over Drainage Ditch is a concrete continuous slab carrying Ill 18 over Drainage Ditch in Putnam County, Illinois. It was built in 1932 and reconstructed in 1979, so it is 93 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 3 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 2,100 vehicles a day, roughly 12% of them trucks, projected to reach 2,600 by 2046. The structure is 68 ft (20.7 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Ill 18 over Drainage Ditch built?
It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1979.
What condition is Ill 18 over Drainage Ditch 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 January 2024.
How much traffic does Ill 18 over Drainage Ditch carry?
About 2,100 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is Ill 18 over Drainage Ditch?
The structure is 68 ft (20.7 m) long with a longest span of 22 ft (6.7 m) and a deck 32 ft wide.
Who owns Ill 18 over Drainage Ditch?
It is owned by the State Highway Agency.