Ahneman Kirby, LLC is the result of a merger between two outstanding firms and traditions:  Ahneman Associates started in 1988 by Edward and Thomas G. Ahneman in Greenwich, CT and J.A. Kirby Company started in 1871 by Joseph Andrew Kirby in Port Chester, New YorkJoseph Kirby’s  legacy includes the Boston Post Road (Rte.1) bridge that spans the Byram River at the “Gateway to New England” – the State of Connecticut Boundary.

J.A. Kirby’s surveys, sewer designs, road designs, and storm water designs shaped the Village of Port Chester at the end of the 19th century.  Many of his maps and designs are in use today and Ahneman Kirby, LLC is the proud steward of Kirby’s records, and continues the J. A. Kirby tradition of time tested civil engineering work. 

Ahneman Associates founders Ed, Jr. and Tom G. Ahneman are second and third generation civil engineers.  Edward Ahneman, Sr. was a civil engineer on the team that built the Kensico Dam in North White Plains, New York, the New York City water supply reservoirs, and was chief engineer overseeing the construction of New York City water supply aqueduct tunnels 5 and 5A which are still in use today.
Principal, Thomas G. Ahneman, P.E. has extensive engineering experience in structural designs.  He obtained his B.S. in Civil Engineering from UCONN in 1981 focusing on structural and geotechnical disciplines.  He worked for a NYC consultant designing high rise structures while performing coursework toward a Master’s Degree at City College CUNY.  He joined his father in Greenwich, CT in 1985 to provide structural expertise to the firm.


Ahneman Kirby is built on a foundation of three centuries of engineering, surveying, and land planning.  Knowledge, experience, tradition, and innovation are the underpinnings of our work.  Services include:

  • Civil and Structural Engineering, Site Analysis/Engineering Design, Permit Coordination, Facility Planning and Design,  Land Surveying, Waste Water Management, Public and Private Water Supply and Water Quality Mgt Planning, among others.

We serve our clients proudly with a reputation for reliability.  We have completed an extensive list of projects for our clientele in the tri-state area. Please see a sample of list of clients at http://www.ahnemankirby.com/clients.php

Teamwork is the backbone of our organization.  Response and follow-up are our strengths.  We respond with a solution tailored to the client’s needs, be it design development or regulatory review. 

A family-oriented firm, we are a close-knit group of professionals who can rely on each other for support and assistance during the life of a project.  Most of our projects involve a team of people who individually bring expertise to the project through fieldwork, design, and oversight. 

Our clients receive personal attention in every project detail.  Every project is overseen by a licensed professional whose goal is to meet the client’s objectives in a timely and cost effective manner.

Over the years, we have developed long-standing professional relationships with local municipalities, which allow us to present the client goals effectively in the review and approval process.  We encourage municipal interaction early in the design development stage.

With our excellent working knowledge of the area (Westchester and Fairfield Counties) we can identify early on the accessory issues that often arise in land development projects.  We are the trusted advisor.  We get close to out clients.  We respect their needs and goals.  We are able to work closely with clients to negotiate a “best” result.

We have a varied client base, serving private, public, and municipal clients.  Our diversity of experience brings creative solutions to both large and small projects.


1171 East Putnam Avenue, Suite 1A, Riverside, CT 06878| Tel: 203-869-7707 | Fax: 203-869-4606
401 North Main Street Port Chester, NY 10573 Tel: 914-939-0224 | Fax: 914-939-3407
Copyright: 2009 by Ahneman Kirby