Embassy Row Streetscape Design in Washington, DC | Massachusetts Avenue NW Roadway Rehabilitation

$18 million roadway rehabilitation project for 0.8 miles on Massachusetts Avenue NW.

Services:

Precision Systems, Inc. (PSI) led the design for the $18 million roadway rehabilitation of Massachusetts Avenue NW in Washington, DC, spanning 0.8 miles from Waterside Drive to 20th Street NW. This section, famously known as Embassy Row, required a context-sensitive and historically respectful approach due to its designation as a protected historic district, its high-volume traffic, and its appeal to tourists and international visitors.

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To enhance roadway safety and maintain the architectural character of this iconic corridor, PSI redesigned roadway geometry and proposed comprehensive upgrades, including:

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- Modernized street lighting

- Traffic signal improvements

- Enhanced sidewalks and landscaping

- Green infrastructure (GI) features

- Streetscape elements tailored to the historic and diplomatic setting

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By balancing modern infrastructure needs with historic preservation, PSI delivered a full-scale design solution that improves multimodal transportation, aesthetic cohesion, and public safety along one of Washington, DC’s most prominent corridors.

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At a Glance

ACEC Awarded Project

$18M Rehabilitation Project

MOT planning and execution for 103 traffic signal heads, 60 pedestrian signals, 9 control cabinets, 69 manholes, and 146 streetlight upgrades

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