Md 450 over North River
Anne Arundel County, Maryland · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Md 450 over North River in Anne Arundel County, Maryland, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1989, making it 36 years old at the 2025 inventory.
- It carries about 6,927 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 124 of the 392 inventoried bridges in Anne Arundel County rated good (31.6%); 4 (1.0%) are rated poor.
- 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 → (38.98719, -76.62275)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 45 ft |
| Location | 2.89 Mile East of Md 424 |
| NBI structure number | 100000020073030 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Maryland department of transportation.
Busiest bridges in Anne Arundel County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 95/IS 495 Rmp P over Is 95/IS 495 Ramp B | 2005 | 191,981 | Good |
| Is 595 over Is 97 Ebr | 1987 | 159,360 | Fair |
| Is 95/495 Il Local over Is 95/IS 495 Ramp Q | 2006 | 141,180 | Good |
| Is 97 Nbr over Md 3 Business | 1990 | 135,900 | Good |
| Is 97 Sbr over Md 3 Business | 1990 | 135,900 | Fair |
| Is 695 over Md 168 | 1958 | 128,182 | Fair |
All bridges nearby: Anne Arundel County, MD bridge conditions · every bridge in Anne Arundel County · Maryland bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.