Reading from the "Mountain Directory - West" (highly recommended) "It is a good two lane road with passing lanes during the clumbs. Eastbound descent from the summit of Washington Pass - 7% grade over 7 miles - 30-40mph curves. Use caution.
Westbound descent - 4 mi of 6-7% grade. At this point the climb to the summit of Rainy Pass begins. The summit is reached after a 1 1/2 mile 5-6% climb.
Westbound from Rainy Pass - 6% grade 4 miles. Then a 3 mile flat section and another 3 mile 3-5% downhill grade followed by a 1 mile flat section and then a sign 'steep 5-6% grade next 3 miles'. There is a lot of downhill left until Newhalem is reached 26 miles from this sign."
