South Waterside Dr over Rock Creek Parkway (NB)
District of Columbia, District of Columbia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- South Waterside Dr over Rock Creek Parkway (NB) in District of Columbia, District of Columbia, 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 1940, making it 85 years old at the 2025 inventory.
- It carries about 15,152 vehicles a day (traffic count year 2019).
- It is one of 166 of the 261 inventoried bridges in District of Columbia rated fair (63.6%); 5 (1.9%) 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 → (38.91376, -77.05499)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 84 ft |
| Location | 0.4 Miles From P Street. |
| NBI structure number | 3450034P0000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the District of Columbia department of transportation.
Busiest bridges in District of Columbia
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Anacostia Freeway over Good Hope Road | 1964 | 295,046 | Fair |
| Southwest Freeway over Half St to 2ND St SW | 1963 | 252,820 | Fair |
| Southeast Frwy over CSX RR NJ & VA Ave | 1964 | 252,800 | Fair |
| NB I-395 over Potomac River & Ohio Dr. | 1950 | 249,000 | Fair |
| SB I-395 over Potomac R. and Ohio Dr. | 1960 | 249,000 | Fair |
| Southwest Freeway over Wash Channel & Maine | 1961 | 183,000 | Fair |
All bridges nearby: District of Columbia, DC bridge conditions · every bridge in District of Columbia · District of Columbia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.