South Tollgate Roa over Plumtree Run
Harford County, Maryland · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- South Tollgate Roa over Plumtree Run in Harford County, Maryland, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2019, making it 6 years old at the 2025 inventory.
- It carries about 225 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 107 of the 276 inventoried bridges in Harford County rated good (38.8%); 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 September 2023, on a 24-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 → (39.50431, -76.04056)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Concrete deck arch |
| Length | about 36 ft |
| Location | 0.38 Mi. N. Plumtree Rd. |
| NBI structure number | 200000H-0233010 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 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.