After completing a Bachelor of Science Degree in Mechanical Engineering, Mac Tarrosa joined Griffith Company in 2000 as a Project Engineer for the LA District (Southern Region). His first projects included the Berth 302-305 Backland Expansion with the Port of Los Angeles and the $71-million Pier T Marine Terminal with the Port of Long Beach. Mac went on to manage the $11-million Taxiway N Westerly Extension with Los Angeles World Airports and the $27-million Improvements to Runway 12-30 with the City of Long Beach. In 2005, He was asked to join Griffith Company’s Concrete Division to help grow the Division. Mac’s detail-oriented personality made him a good fit to manage and increase the volume of the Concrete Division.

Since joining, Mac has helped double the Division’s volume and expand operations by building curb and gutter work, sidewalk, driveways, ramps, PCC Paving, Rapid-Set Panel Replacement, Airport Paving, Pre-cast Slab Replacement, Decorative PCC Work, PCC Minor Structures & Pavers. Mac has been instrumental in making Griffith Company well known in the industry as a subcontractor for public and private contractors. Mac is a board member of the AGC California Construction Leadership Council and sits as a Trustee for the Cement Mason Health & Welfare Board.