SR 18 over Salamonie River
Blackford County, Indiana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 18 over Salamonie River in Blackford County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1924 and reconstructed in 2015, making it 101 years old at the 2025 inventory.
- It carries about 2,140 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 47 of the 73 inventoried bridges in Blackford County rated fair (64.4%); 3 (4.1%) are rated poor.
- 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 → (40.55466, -85.26147)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete deck arch |
| Length | about 225 ft |
| Location | 05.83 E SR 3 |
| NBI structure number | 004890 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Blackford County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 3 over Little Lick Creek | 1987 | 6,690 | Fair |
| SR 3 over Big Lick Creek | 1960 | 6,203 | Fair |
| SR 18 over Prairie Creek | 1976 | 3,003 | Fair |
| SR 18 over Greenlee Ditch | 2008 | 2,781 | Good |
| SR 26 over Little Lick Creek | 2009 | 2,339 | Fair |
| SR 3 over Prairie Creek | 1932 | 2,249 | Poor |
All bridges nearby: Blackford County, IN bridge conditions · every bridge in Blackford County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.