Based on the latest information available, the US 40 Routt County boat ramp in Colorado is a concrete boat ramp that is open year-round. It is approximately 16 feet wide and can accommodate a variety of watercraft, including boats, jet skis, and kayaks.

This boat ramp services the Elkhead Reservoir, which is a popular destination for fishing, boating, and camping in Colorado. The reservoir is approximately 900 acres in size and has a maximum depth of 70 feet.

According to the Colorado Parks and Wildlife, the Elkhead Reservoir allows motorized boats up to 20 feet in length, as well as non-motorized boats such as canoes, kayaks, and paddleboards. All boats must comply with state regulations, including having proper registration and safety equipment.

It is important to note that regulations and restrictions may change over time, so it is always best to check with local authorities or the Colorado Parks and Wildlife website for the most up-to-date information before using the US 40 Routt County boat ramp or accessing the Elkhead Reservoir.