Keystone Avenue over Howland Ditch
FairMarion County, Indiana · 00.15 N of 71st Street · Structure no. 4900490
- Built
- 1960
- 65 years old, rebuilt 1995
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 103 ft
- 3 main spans
- Daily traffic
- 54,496
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Keystone Avenue over Howland Ditch is a concrete continuous slab carrying Keystone Avenue over Howland Ditch in Marion County, Indiana. It was built in 1960 and reconstructed in 1995, so it is 65 years old, older than the Indiana average of 46.6 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 54,496 vehicles a day, roughly 5% of them trucks, projected to reach 80,980 by 2039. The structure is 103 ft (31.5 m) long and 94 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Keystone Avenue over Howland Ditch built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1995.
What condition is Keystone Avenue over Howland Ditch 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 July 2024.
How much traffic does Keystone Avenue over Howland Ditch carry?
About 54,496 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is Keystone Avenue over Howland Ditch?
The structure is 103 ft (31.5 m) long with a longest span of 42 ft (12.8 m) and a deck 94 ft wide.
Who owns Keystone Avenue over Howland Ditch?
It is owned by the City or Municipal Highway Agency.