CR 600S over Rattlesnake Creek
Montgomery County, Indiana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR 600S over Rattlesnake Creek in Montgomery County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- It carries about 2,980 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 123 of the 252 inventoried bridges in Montgomery County rated fair (48.8%); 8 (3.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 6 to 5.
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (39.95241, -86.90644)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 59 ft |
| Location | 00.20 W of US 231 |
| NBI structure number | 5400093 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Montgomery County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-74 over Remley Ditch | 1964 | 20,469 | Fair |
| I-74 WB over CSX RR | 1964 | 17,540 | Good |
| I-74 EB over SR 47 | 1964 | 17,525 | Fair |
| I-74 WB over SR 47 | 1964 | 17,525 | Fair |
| US 231 over Dry Branch | 1931 | 17,443 | Good |
| I-74 EB over Sugar Creek | 1964 | 17,400 | Fair |
All bridges nearby: Montgomery County, IN bridge conditions · every bridge in Montgomery County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.