Ill 18 over Ill River Cromwell DR
PoorMarshall County, Illinois · 1.22 MI E of Ill 29 · Structure no. 062003600000000
- Built
- 1934
- 91 years old, rebuilt 1988
- Condition
- Poor
- inspected April 2024
- Type
- Truss - Thru
- Steel
- Length
- 1,719 ft
- 1 main span
- Daily traffic
- 2,200
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 18 over Ill River Cromwell DR is a steel truss - thru carrying Ill 18 over Ill River Cromwell DR in Marshall County, Illinois. It was built in 1934 and reconstructed in 1988, so it is 91 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. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 2,200 vehicles a day, roughly 8% of them trucks, projected to reach 2,222 by 2046. The structure is 1,719 ft (524 m) long and 23 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 Ill 18 over Ill River Cromwell DR built?
It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1988.
What condition is Ill 18 over Ill River Cromwell DR 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 April 2024.
How much traffic does Ill 18 over Ill River Cromwell DR carry?
About 2,200 vehicles per day (2021 count), of which roughly 8% are trucks.
How long is Ill 18 over Ill River Cromwell DR?
The structure is 1,719 ft (524 m) long with a longest span of 364 ft (111 m) and a deck 23 ft wide.
Who owns Ill 18 over Ill River Cromwell DR?
It is owned by the State Highway Agency.