121st Avenue over Niles Ditch
PoorPosted for loadLake County, Indiana · 00.20 E of Iowa ST · Structure no. 4500079
- Built
- 1977
- 48 years old, rebuilt 2008
- Condition
- Poor
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 125
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
121st Avenue over Niles Ditch is a prestressed concrete box beam or girders - multiple carrying 121st Avenue over Niles Ditch in Lake County, Indiana. It was built in 1977 and reconstructed in 2008, so it is 48 years old, older than the Indiana average of 46.6 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: posted for load restriction.
It carries about 125 vehicles a day, roughly 3% of them trucks, projected to reach 153 by 2041. The structure is 34 ft (10.3 m) long and 29 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 121st Avenue over Niles Ditch built?
It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2008.
What condition is 121st Avenue over Niles 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 August 2024.
How much traffic does 121st Avenue over Niles Ditch carry?
About 125 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is 121st Avenue over Niles Ditch?
The structure is 34 ft (10.3 m) long with a longest span of 32 ft (9.9 m) and a deck 29 ft wide.
Who owns 121st Avenue over Niles Ditch?
It is owned by the County Highway Agency.