KOA Corporation, a Lochner Company, specializes in transportation engineering, mobility planning, and construction management for public agencies and private sector clients. KOA’s mission is to create a safe, accessible, and sustainable transportation environment that embodies diversity, equity, and inclusion for future generations, coupled with a vision of advancing and connecting communities in Southern California through a commitment to providing exceptional service to clients. KOA provides professional consulting services for some of California’s largest public-works and planning projects, across all modes of transportation.
Lochner acquired KOA in December 2022. The 100+person firm has offices in Monterey Park, Orange, Ontario, San Diego, and Culver City, California.
Armstrong Consultants, a Lochner Company, specializes exclusively in airport planning, engineering, and construction administration services. Serving the airport community since 1985, Armstrong has completed over 3,000 improvement projects at more than 130 airports, ranging from small rural general aviation airports to business jet executive airports, commercial service airports, and military airfields throughout the western United States.
Lochner acquired Armstrong Consultants in December 2022. The 45+person firm has offices in Grand Junction, CO; Albuquerque, NM; Casper, WY; Denver, CO; Phoenix, AZ; Reno, NV; and Santa Rosa, CA.