Natural Bridge was an attraction that I'm deeming to be a waterfall attraction because the Kicking Horse River actually disappeared before re-emerging through the natural span. However, the span kind of seemsed more like rocks being wedged together depending on the viewing angle. We were able to hear the roar of the disappearing water churning and ejecting beneath the bridge to further reinforce my move in making this a legitimate waterfall.
From the car park, there was a real short walk going on a bridge over the Kicking Horse River providing frontal views of the attraction backed by scenic mountains when the weather was fair (see photo above). Beyond the bridge, the short walking path curled left towards a viewing deck where we got more angled views of the natural span with different mountains serving as the backdrop.
We were very lucky that we happened to show up just when the bad weather finally cleared up to the point that we could see the river's powdery blue color as well as the scenic snowy mountains backing the whole scene. That color in the water, which seemed to be typical of the watercourses and lakes in this area, was a result of minerals and other deposits injected by glaciers prevalent in the area.
Directions: The car park is on the way to Emerald Lake and the Hamilton Falls. The well-signed car park for Natural Bridge is a little over 2km from the Emerald Lake turnoff deviating from Hwy 1. For details on getting to this turnoff from Lake Louise, see the Hamilton Falls page.