Greenhorne & O'Mara (G&O) Engineering Consultants

Washington, DC

This high-profile project entails developing a Master Plan for construction of the 4.5 million gross square foot Department of Homeland Security Headquarters. more

Construction Underway on Major Greenhorne & O'Mara Florida Flyover Project

LAUREL, MD - March 9, 2010 – Engineering consulting firm, Greenhorne & O'Mara, Inc., (G&O), announced that construction is underway on the $25.1 million SR 85 at SR 123 Flyover project located in Okaloosa County, FL. more

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Greenhorne & O'Mara is recruiting part-time employees to provide assistance to Federal Emergency Management Agency (FEMA) in time of natural disasters. Click here for details and to apply.

Engineering News Record (ENR)
In the 2009 Engineering News Record (ENR) survey of national engineering firms, G&O ranks 140th among the Top 500 Design Firms.

The Washington Business Journal 2009 Book of Lists placed G&O as the 12th largest engineering firm (ranked by billings) in the Washington, D.C. metropolitan area.

South Florida Business Journal
Ranked G&O #16 in Top South Florida Engineering Firms.