Corporate Office:
(Detroit)		 220 Bagley Avenue, Suite 500
Detroit, Michigan 48226
Corporate Contact:

Helen M. Himes, P.E.
President/Engineering Manager
Contact Information:
Phone: (313) 963-6560
Fax: (313) 963-6960
Email: hhimes@hhengltd.com

Western MI Office:
(Grand Rapids)		 Regular Mail:
P.O. Box 348
Lowell, Michigan 49331

Overnight Mail:
2120 Parnell Avenue, SE
Ada, Michigan 49301
Western MI Contact: Alan Halbeisen, P.E.
Engineering Manager
Contact Information:
Phone: (616) 897-0074
Fax: (616) 897-1104
Email: ahalbeisen@hhengltd.com
DBE Status: Certified DBE by MDOT
MDOT Prequalified Categories: - Hydraulics Design
- Municipal Utilities Design
- Road & Street Design
- Roadway Rehabilitation & Rural Freeway Design
- Short & Medium Span Bridge Design
- Maintaining Traffic Plans & Provisions
- Pavement Marking Plans
- Bridge Project Scoping
Legal Status: Michigan Corporation
Federal ID#: 38-3041397
Approved Negotiator: Helen M. Himes, President