 Another realignment of Alt US 40 occurred in Eckhart Mines, where in 1969 the road, then designated as US 40, was realigned to the north, bypassing the section of the highway through Eckhart Mines, which has a lower speed limit and sharp curves.The speed limit on the old alignment is , and the new alignment has a speed limit of along most of the bypass.The new alignment intersects the old alignment, designated as MD 743, on the east end between MD 638 and MD 55.