« Reply #44 on: May 15, 2022, 10:00:08 PM »
I-75 is an unusual one for this topic. It is 2 lanes (except aux lanes and climbing lanes) from Bay City up to the Soo, approx 230 miles. But, only northbound. Southbound you pick up a third lane from Grayling (the sb Biz 75 entrance) to the I-75/US-127 split. You could say this is an auxiliary lane. However, this is a long distance, plus their is an exit in-between, 4-mile Road. So, southbound I-75 has about a 5 mile gap, but not northbound.
Logged
2DI's traveled: 5, 8, 10, 12, 15, 20, 24, 30, 35, 39, 40, 41, 43, 44, 45, 49, 55, 57, 59, 64, 65, 66, 68, 69, 70, 71, 72, 74, 75, 76, 77, 78, 79, 80, 81, 85, 87, 88, 90, 93, 94, 95, 96