Engineering Vibrant Communities

We provide public agencies and private business interests with comprehensive engineering and planning support to improve the quality of life within the communities we serve. Our core services include civil and structural engineering, planning, survey, landscape architecture, environmental and water resources, and construction observation.



In April 1977, Dennis Snyder and Stephen Rowe founded Snyder & Associates, a small engineering and planning firm in downtown Oskaloosa, IA. Driven by challenge, their founding vision was to become known and respected throughout Iowa as a comprehensive engineering and planning firm. With an emphasis on responsive, personal service tailored to meet individual client needs, they sought a small town image and shied away from the thought of becoming known as a ‘big city’ firm.

After a few months of survey work, the firm received its first big break in July 1977—the Polk City Water Treatment Plant. Due to the distance between Oskaloosa and Polk City, a second office was opened on the north side of Ankeny. The same day it opened, Dennis and Steve hired their first three employees: a secretary, surveyor, and an inspector.

A short time later, the University Avenue widening project was awarded to the firm by the city of Clive. The project, which transformed University Avenue from a two-lane street to the four-lane corridor it is today, provided valuable transportation engineering experience.

By 1979, Snyder & Associates had been hired as the City Engineer for both Polk City and Clive. The firm had outgrown its original office with a team of 25 employees, new clients, and additional projects. In just two short years, Dennis and Stephen’s vision became a reality.

Responsive Expertise. Innovative Solutions.

Today, we remain true to our founding vision while striving to improve the quality of life within the communities we serve. In order to overcome 21st-century challenges and meet the evolving needs of our clients, we’ve expanded our services to offer complete planning, design, and construction capabilities.

Beginning with a long-term approach, our professionals facilitate growth through planning to produce lasting results. Strong emphasis is placed on incorporating creative, sustainable, and economical design solutions.

By thinking beyond engineering, we bring communities together, manage the public involvement process, and coordinate with government entities.

Constrained resources and complex challenges do not break our stride — they inspire us to persevere and innovate.



Nearly 40 years since its inception, Snyder & Associates has grown to become the largest civil engineering and planning firm in central Iowa, with locations throughout the Midwest. Clients continue to receive the responsive, personal service of a small firm while utilizing the expertise of over 250 professionals and associates.

As a result, over 90% of our clients continue to trust us as an extension of their staff.

We design and maintain infrastructure for a variety of clients including:

  • Municipal and county governments
  • State and federal governments
  • Aviation authorities
  • Utility providers
  • Parks and recreation
  • Private developers and industries
  • Institutional campuses
  • Wind energy developers