The highway was completely rebuilt, starting in 1989, to its modern form. The reconstruction reduced the maximum grade from 11% to 8% and re-graded the switchbacks to be on level ground to eliminate the blind corners.
The highway underwent a comprehensive makeover, starting in 1989, to bring it up to date. The reconstruction lowered the maximum tilt from 11% to 8% and re-designed the hairpin turns to be on flat ground to remove the blind spots.