Why is the 15 freeway in San Diego both a state route and an interstate?
Why does the 15 freeway become a state route and not remain as an interstate south of Interstate 8 in San Diego?
County, city move forward with study analyzing new route around Hutchinson
A plan to build a road that curves from State Highway 15 on Hutchinson’s north side to State Highway 7 on Hutchinson’s east side is taking shape. Hutchinson City Council agreed last ...