The Bismark Lake Road boat ramp is located in Custer County, South Dakota, at coordinates 43.77639008 latitude and -103.51265717 longitude. This boat ramp provides access to Bismark Lake, which is a small, 80-acre body of water located in the Black Hills National Forest.

According to the latest information available, the Bismark Lake Road boat ramp is a concrete ramp with a width of 10 feet. This ramp is suitable for launching small boats, canoes, and kayaks. However, it may not be suitable for larger boats or boats with trailers.

The South Dakota Game, Fish and Parks website provides additional information about Bismark Lake. According to this site, the lake is known for its excellent trout fishing opportunities, with rainbow, brown, and brook trout all present in the lake. The lake is also open to non-motorized watercraft such as canoes and kayaks.

In summary, the Bismark Lake Road boat ramp is a concrete ramp located in Custer County, South Dakota. It provides access to Bismark Lake, which is a small body of water suitable for small boats, canoes, and kayaks. The lake is known for its trout fishing opportunities and is open to non-motorized watercraft.