Gwmp (SB) over Spout Run & Spout Run Pa
Arlington County, Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Gwmp (SB) over Spout Run & Spout Run Pa in Arlington County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1959 and reconstructed in 1991, making it 66 years old at the 2025 inventory.
- It carries about 27,400 vehicles a day (traffic count year 2019).
- It is one of 152 of the 183 inventoried bridges in Arlington County rated fair (83.1%); 6 (3.3%) 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 April 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.
View this bridge on a map → (38.9015, -77.08267)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete deck arch |
| Length | about 334 ft |
| Location | 7.8 Miles South of I-495. |
| NBI structure number | 3300010P0000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Virginia department of transportation.
Busiest bridges in Arlington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-395 SB over Potomac River & Ohio Dr. | 1960 | 178,242 | Fair |
| H.g.shirley Mem Hy over Glebe Road (route 120) | 1973 | 176,778 | Fair |
| Shirley Mem.hwy. over I-395 (ramp G) | 1973 | 176,778 | Fair |
| Shirley Hwy Ar Nvy over Long Branch | 1973 | 176,778 | Fair |
| Shirley Mem.hiway over Boundary Channel Drive | 1950 | 126,751 | Fair |
| 395 Express Lanes over Eads St. & Express Ramp | 1976 | 126,751 | Fair |
All bridges nearby: Arlington County, VA bridge conditions · every bridge in Arlington County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.