CR 350 South over Amity Ditch
Johnson County, Indiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR 350 South over Amity Ditch in Johnson County, Indiana, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- It carries about 65 vehicles a day (traffic count year 2017).
- Its listed owner is the county highway agency.
- It is one of 23 of the 230 inventoried bridges in Johnson County rated poor (10.0%); 23 (10.0%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2024, on a 12-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (39.42614, -86.00485)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete channel beam |
| Length | about 23 ft |
| Location | 0.05 W of US 31 |
| NBI structure number | 4100087 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Johnson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-65 over Drainage Ditch | 1971 | 92,074 | Good |
| I-65 over Drainage Ditch | 1969 | 55,807 | Fair |
| SR 37 Sbl over Bluff Creek | 2023 | 47,800 | Good |
| SR 37 Nbsb over North Bluff Creek | 2022 | 47,800 | Good |
| I-65 NB over Hurricane Creek | 2017 | 38,171 | Good |
| I-65 NB over Greenwood RD/950 N | 2016 | 37,414 | Good |
All bridges nearby: Johnson County, IN bridge conditions · every bridge in Johnson County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.