M Street N.W. over Parkway & Rock Creek
GoodDistrict of Columbia, District of Columbia · M St. over Parkway N.W. · Structure no. 0035
- Built
- 1928
- 97 years old, rebuilt 1999
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 232 ft
- 3 main spans
- Daily traffic
- 16,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
M Street N.W. over Parkway & Rock Creek is a steel stringer/multi-beam or girder carrying M Street N.W. over Parkway & Rock Creek in District of Columbia, District of Columbia. It was built in 1928 and reconstructed in 1999, so it is 97 years old, older than the District of Columbia average of 63.7 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 16,000 vehicles a day, roughly 1% of them trucks, projected to reach 16,000 by 2027. The structure is 232 ft (70.7 m) long and 59 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M Street N.W. over Parkway & Rock Creek built?
It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1999.
What condition is M Street N.W. over Parkway & Rock Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.
How much traffic does M Street N.W. over Parkway & Rock Creek carry?
About 16,000 vehicles per day (2018 count), of which roughly 1% are trucks.
How long is M Street N.W. over Parkway & Rock Creek?
The structure is 232 ft (70.7 m) long with a longest span of 78 ft (23.8 m) and a deck 59 ft wide.
Who owns M Street N.W. over Parkway & Rock Creek?
It is owned by the State Highway Agency.