Md 320 over Northwest Branch
Prince George's County, Maryland · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Md 320 over Northwest Branch in Prince George's County, Maryland, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1910 and reconstructed in 1955, making it 115 years old at the 2025 inventory.
- It carries about 21,112 vehicles a day (traffic count year 2009).
- Its listed owner is the state highway agency.
- It is one of 345 of the 576 inventoried bridges in Prince George's County rated fair (59.9%); 18 (3.1%) 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 → (39.00158, -76.98321)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete deck arch |
| Length | about 60 ft |
| Location | 0.05 Mile South of Md 650 |
| NBI structure number | 100000160065010 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Maryland department of transportation.
Busiest bridges in Prince George's County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 95 over Little Paint Branch | 1963 | 226,340 | Fair |
| I-495 I.l. over Amtrak | 1964 | 226,100 | Fair |
| I-495 O.l. over Amtrak | 1964 | 226,100 | Fair |
| Is 95/495 over Md 214 | 2020 | 224,775 | Good |
| Is 95/495 over Md 214 | 2020 | 224,775 | Good |
| Is 95 Il over Md 193 | 1963 | 220,640 | Fair |
All bridges nearby: Prince George's County, MD bridge conditions · every bridge in Prince George's County · Maryland bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.