Cool Spring Road over Tobacco Run
Harford County, Maryland · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cool Spring Road over Tobacco Run in Harford County, Maryland, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1981, making it 44 years old at the 2025 inventory.
- It carries about 1,545 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 157 of the 276 inventoried bridges in Harford County rated fair (56.9%); 12 (4.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2023, 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.
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 39 ft |
| Location | 0.8 Miles W of Md 136 |
| NBI structure number | 200000H-0033020 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Maryland department of transportation.
Busiest bridges in Harford County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 over Winters Run Rd Winters R | 1963 | 161,591 | Fair |
| I-95 over James Run | 1963 | 130,492 | Fair |
| I-95 over Grays Run | 1963 | 116,162 | Good |
| I-95 over Carsins Run | 1963 | 100,386 | Good |
| I-95 over Swan Creek | 1963 | 100,386 | Fair |
| I-95 over Md 462 | 1963 | 95,675 | Fair |
All bridges nearby: Harford County, MD bridge conditions · every bridge in Harford County · Maryland bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.