[ Detroit | Grand Rapids ]
	Corporate Office: (Detroit)	220 Bagley Avenue, Suite 500 Detroit, Michigan 48226
	Contact Person:	Helen M. Himes, P.E. President/Engineering Manager Phone:  (313) 963-6560 Fax:  (313) 963-6960 Email:  hhengltd@hhengltd.com
	Map/Directions: (clicking on map will open load this location in a new window.)
	Western MI Office: (Grand Rapids)	Regular Mail: P.O. Box 348 Lowell, MI 49331 Overnight Mail: 2120 Parnell Avenue, SE Ada, MI 49301
	Contact Person:	Alan Halbeisen, P.E. Engineering Manager Phone:  (616) 897-0074 Fax:  (616) 897-1104 Email:  hhengltd@hhengltd.com
	Map/Directions: (clicking on map will open load this location in a new window.)