Glen Arm Road over Long Green Creek
Baltimore County, Maryland · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Glen Arm Road over Long Green Creek in Baltimore County, Maryland, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1987, making it 38 years old at the 2025 inventory.
- It carries about 7,740 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (39.45714, -76.48078)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 4 | Poor condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Steel through truss |
| Length | about 77 ft |
| Location | 1.52 Miles NW of Md 147 |
| NBI structure number | 200000B-0222010 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Maryland department of transportation.
All bridges nearby: Baltimore County, MD bridge conditions · Maryland bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.