7200 E. Hampden Ave., Suite 300, Denver, CO 80224 | 303.298.1644

Who We Are

We are group of Civil Engineers that are inspired by transforming land to shape the environment and become an extension of its natural surroundings.

lonnyLonny E. Phelps, P.E.

As Owner and President of Phelps Engineering Services, Inc, Lonny is responsible for overall project management, client relations and providing quality control and assurance. Phelps Engineering Services, Inc. has been in business since 1998 designing and managing civil engineering projects. Lonny has managed engineering projects ranging from water transmission/storage to a 6300 acre development with infrastructure planning to five miles of roadway design of a major arterial. His experience, knowledge and understanding of engineering principles bring a wealth of information to his assignments. Lonny’s clear project understanding of engineering design and construction parameters/tolerances are critical to the success of every project. His strong construction management background gives him the foresight and practical vision with the civil design related work.

His mission at Phelps Engineering Services is to combine quality engineering professionals with superior project management to guide client projects in all related fields

Professional Engineer, Colorado #31346
Professional Engineer, New Mexico #20073
Professional Engineer, Wyoming #12483
Professional Engineer, Montana #20060
Professional Engineer, Utah #8129959-2202
Professional Engineer, Connecticut #29284
Professional Engineer, Texas #115029


Frank FeeroFrank Feero, P.E.
Senior Project Engineer

Mr. Feero is an experienced Professional Civil Engineer having over thirteen years of experience with Engineering Design and Project Management in the fields of Land Development and Public Works Transportation. He brings extensive experience with engineering design concepts and review processes for site plans and construction plans maintaining projects within clients established budgets and time lines. Frank has several specialties ranging from stormwater management, designing storm water drainage systems along with erosion control (SWMP) plans and design of utilities.