| Business | Phone |
| Construction Engineering Svc 12 Pleasant St, Newburyport 1950 | (978) 465-2216 |
| Port Engineering Assoc Inc 1 Harris St # 2, Newburyport 1950 | (978) 465-8594 |
| Oak Engineers Inc 40 Merrimac St # R, Newburyport 1950 | (978) 465-9877 |
| G A Consultants 10 State St, Newburyport 1950 | (978) 462-7766 |
| Newbury Design 7 Park St, Newburyport 1950 | (978) 590-4271 |