CR 550S over Big Walnut Creek
Putnam County, Indiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR 550S over Big Walnut Creek in Putnam County, Indiana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1880 and reconstructed in 2014, making it 145 years old at the 2025 inventory.
- Its listed owner is the county highway agency.
- It is one of 90 of the 293 inventoried bridges in Putnam County rated good (30.7%); 51 (17.4%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated March 2023, on a 48-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (39.58221, -86.93862)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Timber through truss |
| Length | about 206 ft |
| Location | 00.10 E of CR 500 W |
| NBI structure number | 6700111 |
| Condition class | Good |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | March 2023 |
| Inspection interval (item 91) | 48 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 Putnam County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-70 EB over Vermillion Creek | 1965 | 41,402 | Fair |
| I-70 WB over Vermillion Creek | 1965 | 41,402 | Fair |
| I-70 EB over US 231 Sb/nb | 1965 | 39,268 | Good |
| I-70 WB over US 231 Sb/nb | 1965 | 39,268 | Good |
| I-70 EB over CSX RR | 1965 | 36,717 | Fair |
| I-70 WB over Knight Road | 1966 | 34,117 | Fair |
All bridges nearby: Putnam County, IN bridge conditions · every bridge in Putnam County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.