When they take 4 lane roads (2 lanes in each direction) and restripe them for 3 lanes (1 lane in each direction and a bidirectional turn lane) and stripe for bicyclists, they are increasing the traffice load (weight, wear and tear) on the remaining lane. Doesn’t sound road smart.
The road to Black Hawk is a narrow two-lane road deep in a mountain valley. The developers had to blast out hillsides to build many of the casinos.