After conducting research, I was unable to find the exact specifications of the boat ramp named US 281 Benson County in North Dakota. However, I did find some information that could be helpful.

It appears that the boat ramp is located on the shore of Devils Lake, which is a large freshwater lake in North Dakota. Devils Lake is known for its excellent fishing opportunities for a variety of species such as walleye, pike, and perch.

Based on the location of the boat ramp and the fact that it services Devils Lake, it is likely that the ramp is designed for motorized watercraft. However, I was unable to confirm whether the boat ramp has any restrictions on the type or size of watercraft allowed.

In terms of width, I could not find any information on the exact dimensions. However, it is common for boat ramps to be at least 12-16 feet wide to accommodate larger boats and trailers.

In conclusion, while I was unable to find specific details about the boat ramp named US 281 Benson County in North Dakota, it appears that it services Devils Lake and is likely designed for motorized watercraft. It is advisable to check with local authorities for more information on the ramp's specifications and any restrictions on the type of watercraft allowed.