The Strava segment is .37 miles and average grade of 10.5%, although the hill continues at a much shallower grade for a couple more blocks. The steepest part of it is around 18% grade. The fastest time on that segment is 1:14. My friend did it the other day in 3:49, at mile 45 of his ride. He's a pretty fit cyclist and is training for a cycling trip to Italy.
I have walked up it to watch the pro race and it's hard on the calves, just walking up the sidewalk in the steepest section.