1946

- Morrison, Hershfield, Millman and Huggins founded in Toronto, ON

1968 

- Office opened in Edmonton, AB

1970

- Company name changes to Morrison Hershfield Burgess and Huggins

1974

- Company founder Carson Morrison, P.Eng., awarded Professional Engineers Ontario Gold Medal

1982

 - Company name changed to Morrison Hershfield

1983

 - Maxim Engineering Inc. founded in Edmonton, AB

1985

 - Morrison Hershfield opens an office in Ottawa, ON

1990

-  Morrison Hershfield opens an office in Calgary, AB

1992

- Morrison Hershfield opens office in Vancouver, BC

1993

- Addition of Rolf Jensen and Associates brings fire prevention and code consulting services

1996

- Morrison Hershfield celebrates 50th Anniversary

1998

- Morrison Hershfield and Maunder Britnell merge
- Morrison Hershfield Corporation opens an office in Atlanta, GA

1999

- Merger results in Alberta firm Maxim Morrison Hershfield Limited

2000

- Morrison Hershfield Corporation opens an office in Fort Lauderdale, FL

2001 

 - Morrison Hershfield Corporation opens an office in Seattle, WA
 - Maxim Morrison Hershfield Limited name changed to Morrison Hershfield Limited

2002

- Company Chairman Art Johns, P.Eng., receives Gold Medal from Professional Engineers Ontario 
- Morrison Hershfield Unveils DualPole, The Ultimate Monopole Reinforcing Solution

2003

- Morrison Hershfield receives APWA Public Works Project of the Year Award and the CEA Award of Merit

2004

- Art Johns, P.Eng. presented with Canadian Council of Professional Engineers Gold Medal and inducted into the University of Toronto's Faculty of Applied Science and Engineering Hall of  Distinction 
- Offices opened in San Francisco, CA and Burlington, ON
- Life Sciences Added to Diverse Range of Specialties

2005  

- Office opened in Portland, OR 
- Morrison Hershfield receives three awards for the Alberta SuperNet project

2006

- Morrison Hershfield celebrates 60 years in business

2007 

- Offices opened in Charlotte, NC and Victoria, BC
- Draycott Environmental Inc. and Mitchell, Pound & Braddock join Morrison Hershfield
- Morrison Hershfield given "Employer Award for Career Enhancement and Success of Women as Technology Professionals"

2008

- Ruys & Company and Suncord Engineering Limited join forces with Morrison Hershfield
- Morrison Hershfield named one of the "Best Places to Work" by Calgary Inc. magazine