Greenhorne & O’Mara, Inc. (G&O)

Visiting address

2661 Riva Road, Suite 1000


Annapolis, MD

Postal address

2661 Riva Road, Suite 1000

Annapolis, MD , 21401

United States


Tel +1 301 261 8058

Fax + 1 301 970 2173

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Company information

Greenhorne & O’Mara, Inc. (G&O) is actively working with state departments of transportation and local transportation agencies to improve the conditions of roads, bridges, and interstate highways. With improved roadway, bridge, and transit systems, we help upgrade safety and reduce the stress associated with the daily commute. Through traffic engineering and traffic calming measures, we make neighborhoods safer. With our expertise in hiker/biker trails and greenways, we provide pleasure to drivers and recreational users. With our environmental capabilities, we work with clients and the public to develop community-sensitive designs.

Company information

Headquarters location 2661 Riva Road, Suite 1000
21401 Annapolis, MD
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  • Architects
  • Consultants Corner
  • Consulting Services
  • Design / Build