Civil Engineering and Surveying for the Kansas City Region
Affinis is a civil engineering, surveying, and consulting practice headquartered in Overland Park, Kansas. Founded in 2001 under the name Larkin Group Consulting Engineers and renamed Affinis in 2002, it has built its practice around long-term client partnerships and constructible infrastructure design. It provides roadway, traffic, stormwater, structural, geotechnical, and aerial survey services to municipal, state, federal, and private clients throughout the Kansas City region. With a 96 percent repeat-client rate and sustained recognition as an employer of choice in civil engineering, the organization focuses on collaborative solutions that move communities forward.
Jason DavisPrincipal, President
Kristen Leathers-GrattonPrincipal, Operations Manager and Transportation Practice Leader
Mike McKennaPrincipal, Community Leader
Linda RottinghausPrincipal
Robert UbbenPrincipal
Aubrey MeyerPrincipal
Brandon GannPrincipal
Sam BriscoeFederal Services Team Lead
Allison SperberGeotechnical Team Lead
Nick McCreadyStormwater Team Lead
Wayne GudenkaufRoadway Team Lead
Designing transportation corridors that enhance safety, support economic development, and improve community quality of life.
Developing concepts and analyzing corridor alternatives using field-collected data to enhance safety and vehicular capacity.
Delivering watershed and drainage designs that maximize available budgets while minimizing construction disruption to local residents.
Providing structural designs that reduce project risk and create resilient physical infrastructure to protect long-term investments.
Combining traditional land surveying techniques with advanced aerial drone capture to map existing site conditions.
Conducting subterranean investigations and soil analysis to support stable infrastructure design and construction.
Providing multi-discipline civil engineering, consulting, and project management tailored to federal government agencies.
Government · Federal · Highways & Roads · Transportation · Stormwater & Flood Control · Land Development
Prairie Village, KS · Transportation · 2026 · Client: City of Prairie Village
Realignment of the misaligned intersection at Cambridge Street and State Line Road bordering Kansas City and Prairie Village. The project began with topographic and boundary surveying to design a safer corridor and improve traffic flow for residents and local businesses.
De Soto, KS · Sports & Recreation · Client: City of De Soto
Design of an ADA-accessible pedestrian and bicycle track providing De Soto High School students and Panasonic employees access to Lexington Park under complex site constraints.
Prairie Village, KS · Stormwater & Flood Control · Client: City of Prairie Village
Stormwater design and drainage improvements along Brush Creek to mitigate flooding and protect residential homes in Prairie Village.
Overland Park, KS · Highways & Roads · Client: City of Overland Park
Neighborhood street and roadway reinvestment project to improve local infrastructure and safety for residents.