Based on the information available online, the McKenzie Bridge Campground boat ramp is a concrete boat ramp located on the McKenzie River in Oregon. It appears to be a single-lane ramp and is reportedly wide enough to allow for two boats to launch simultaneously. The body of water it services is the McKenzie River, which is a popular spot for fishing, kayaking, and rafting. All kinds of watercraft are allowed on the river, including motorized boats, kayaks, canoes, and rafts. However, it should be noted that specific regulations may apply depending on the section of the river and the type of boat being used. It is always recommended to check with local authorities to ensure that all regulations and safety guidelines are being followed.