Background research at urbancreek.com continues on a near-daily basis. The great difficulty in telling stories about Minnehaha Falls is locating their edges. Bits of these tales come bobbing down the metaphorical creek, plunge over the lip of the cataract, and float downstream to meet the river. People and stories come to the Falls, though their tales might begin or end elsewhere. In that light, then, a bit about transportation. This is a big topic about which there is quite a lot to say.
Throughout the 19th century, and largely different from today, people approached the Falls from the south side. Upstream on the road–now Minnehaha Avenue–there was indeed a bridge over the creek, but the roadhouses and hotels and such were south of the creek, and the railroad depot (when the railroads came in) was put where the people were, on the south side. It was closer to the Fort, after all, and the Fort was the only legal settlement in the earliest years. Minnehaha Falls were within the military reservation at the beginning of European settlement in Minnesota.
Someone, some time in those early years, built a bridge to allow people to cross the creek below the Falls.