Bolton & Menk, founded in 1949, provides professional engineering and surveying services to public clients in the upper Midwest and private clients throughout the world. The company has a wide range of experience in the areas of civil, environmental, municipal, water resources and transportation engineering, and land surveying, mapping, and planning. The firm, with offices in Minnesota and Iowa, has more than 250 employees, including a professional staff of over 100 engineers and land surveyors. Bolton & Menk has extensive construction survey experience ranging from basic construction surveys, like basic home construction layout, to staking for high-rise office buildings and complex site developments, such as malls and highway interchanges. It is headquartered in Mankato, Minn.