Staff Members


Mary Roth
Managing Director
1910 Rockland Rd.
Wilmington, DE 19803
Phone: 302-655-7275


Mary brings more than 30 years of non-profit experience to Delaware Greenways, most recently with Make-A-Wish Mid-Atlantic.  As Managing Director, Mary works with a passionate staff, Board of Directors and other community volunteers  to move the organization forward in its mission to promote outdoor connections for healthy, vibrant communities. 

Mary resides in Wilmington with her husband Mike and their three Labrador retrievers.  Both Mary and Mike are Delaware natives and can often be found "outside" in New Castle or Sussex County.  Each considers Lewes, DE their second home and one day plan to make it "home"!


Jeff Greene, P.E.
Director of Preservation & Infrastructure
Transportation Planner
1910 Rockland Rd.
Wilmington, DE 19803
Phone: 302-655-7275


Jeff comes to Delaware Greenways with over 40 years experience in transportation planning and traffic engineering. His experience includes 17 years with the Pennsylvania Department of Transportation and 23 years with Orth-Rodgers and Associates, Inc, a transportation planning and engineering firm. At Delaware Greenways, he is responsible for transportation planning and traffic engineering initiatives and is currently managing the Scenic Conservation Plan for the Brandywine Valley.

Jeff holds a Bachelor of Science degree in Civil Engineering from the University of Pittsburgh and a Master of Civil Engineering degree from Villanova University and served as President of the Mid-Colonial District of the Institute of Transportation Engineers. He is a licensed Professional Engineer in Delaware, Pennsylvania, and New Jersey. He lives with his wife of 30 years in St. Davids, Pennsylvania. They have two grown daughters, four grandchildren and a great granddaughter.


Becca Manning
Manager,Historic Penn Farm
1910 Rockland Rd.
Wilmington, DE 19803
Phone: 302-655-7275


Becca graduated from the University of Delaware with a major in Wildlife Conservation.  After obtaining her degree, she persused her carreer as an artisinal cheese maker, studying in places such as Chile, Washington State and Vermont.  Becca is also the co-founder of The Table at Brandywine, a farm to table event planning business. Becca is excited to bring her knowledge of agricultural and passion for connecting communities to local, sustainable food to Historic Penn Farm.


Gabrielle Vicari
Community & Preservation Planner
1910 Rockland Rd.
Wilmington, DE 19803
Phone: 302-655-7275

Gabrielle brings her considerable experience in writing, editing, and content management to Delaware Greenways, as well as her knowledge of historic preservation planning, Delaware's historic narrative, and comprehensive research and survey methods.  She was previously employed as a research assistant for the Delaware Byways program at the Center for Historic Architecture and Design, where she worked intensively with heritage tourism planning, community engagement, and publication composition and design.  Her other projects have included public education curricula, primary and secondary source analysis, writing tutoring, and diverse broadcast assignments.

Gabrielle holds a B.A. in History with minors in English and Journalism and an M.A. in Historic Preservation, both from the University of Delaware.  She is also certified in the Section 106 review process.  She lives in Doylestown, Pennsylvania, and is an avid bookworm, knitter, and curator of her music collection.



Donna Deery Donna Deery
Administrative Coordinator
1910 Rockland Rd.
Wilmington, DE 19803
Phone: 302-655-7275


Donna provides all levels of administrative support for the Delaware Greenways office and volunteers.  Recently relocated from Central New Jersey with her husband and daughter, she previously worked as assistant to the Executive Director of Somerville, NJ where she was primarily responsible for coordinating 56+ events per year for the Main Street, USA community.  She also provided executive support to Mayor and Council and more than 200 businesses comprising the Special Improvement District (SID) of the town. 

Donna is an avid animal advocate and sat on the Board of Directors for the Friends of Somerset Animal Shelter (FOSRAS) for over 9 years.