Ill 29 over Allens Grove Ditch
GoodMason County, Illinois · .5MI S JCT US136& 29 · Structure no. 063200500000000
- Built
- 1959
- 66 years old
- Condition
- Good
- inspected July 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 2,450
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 29 over Allens Grove Ditch is a concrete culvert carrying Ill 29 over Allens Grove Ditch in Mason County, Illinois. It was built in 1959, so it is 66 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,450 vehicles a day, roughly 30% of them trucks, projected to reach 1,690 by 2021. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 13 mi (21 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 29 over Allens Grove Ditch built?
It was built in 1959, making it 66 years old in 2025.
What condition is Ill 29 over Allens Grove Ditch in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.
How much traffic does Ill 29 over Allens Grove Ditch carry?
About 2,450 vehicles per day (2023 count), of which roughly 30% are trucks.
How long is Ill 29 over Allens Grove Ditch?
The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).
Who owns Ill 29 over Allens Grove Ditch?
It is owned by the State Highway Agency.