M Street N.w. over Parkway & Rock Creek
Good Condition98 years old16,000 vehicles/day
Location
| State | District of Columbia |
| County | District of Columbia |
| Location | M St. Over Parkway N.w. |
| Carries | M Street N.w. |
| Crosses | Parkway & Rock Creek |
| Coordinates | 38.90526, -77.05586 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 232.0 ft (70.7 m) |
| Max Span | 78.1 ft (23.8 m) |
| Deck Width | 59.1 ft (18 m) |
| Deck Area | 1272.6 sq m |
| Main Spans | 3 |
| Year Built | 1928 (reconstructed 1999) |
Traffic
| Avg Daily Traffic | 16,000 (2018) |
| Truck Traffic | 1% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 0035 |