At Tiernan & Patrylo, we understand that the key to our success is helping you achieve yours. Since 1984, we have built our reputation upon the key values of:

  • Do What Is Right
  • Do What You Say
  • Treat Others As You Want To Be Treated

Tiernan & Patrylo’s staff of professional engineers have participated in over a billion dollars of business. We have achieved this level of trust by:

  • Building Long-Term Relationships
  • Providing Innovative Solutions For Unique Challenges
  • Completing Projects With Quality, On Time And Within Budget

Tiernan & Patrylo is constantly seeking new opportunities to utilize our extensive experience and expertise.

We look forward to working with you to help you achieve success!

sign2John P. Tiernan, P.E.

President and CEO