Massaro & Welsh was founded in 1974 by Richard O. Massaro and Paul T. Welsh in San Bernardino, California.

Since its founding, this firm has prized quality above quantity, integrity and a good reputation above profits. We are licensed professionals, who not only have the theoretical knowledge, but have the practical experience as well, to perform work which is economically justified and feasible.

Massaro & Welsh is a multidisciplinary firm offering in-house capabilities and professional services in the fields of engineering (civil, transportation, sanitary, and structural), planning, land surveying, and construction management


Our Address:

34840 Yucaipa Blvd. Yucaipa, CA 92399


34.033945821218, -117.04435408115