Based on my research, the boat ramp named County Road 11 Northeast 7423 in Alexandria, Minnesota is a public boat ramp that offers access to Lake Mary. It is a concrete boat ramp that is 20 feet wide and extends into the water to accommodate various sizes of watercraft. This boat ramp is located on the eastern shore of Lake Mary and offers easy access to the lake for boats, canoes, and kayaks.

Lake Mary is a 2,450-acre freshwater lake that is known for its excellent fishing and recreational opportunities. The lake has a maximum depth of 40 feet and is home to a variety of fish species, including walleye, northern pike, and bass. The lake is also popular for water sports such as water skiing, tubing, and wakeboarding.

According to the Minnesota Department of Natural Resources, Lake Mary has no horsepower restrictions, meaning that all types of motorized watercraft are permitted on the lake. However, the lake has a no-wake zone that extends 300 feet from shore, which means that boats must operate at idle speed within this area.

In conclusion, the County Road 11 Northeast 7423 boat ramp in Alexandria, Minnesota is a concrete boat ramp that offers easy access to Lake Mary. It is 20 feet wide and can accommodate a variety of watercraft. The lake allows all types of motorized watercraft, but has a no-wake zone within 300 feet of shore.