This hill is above a 30% grade.  Can't remember how steep exactly.  Actually looks above a 45% grade. 

Anyway I tried to see if I could ride up it on my bike. 

Got a start by the speed limit sign so I could be moving when I hit the base.  I gave it all I had, stood up at the end, pushed until I hurt and barely made it to that third driveway on the right (the highest driveway, but not quite halfway up). 

By the time I got there I was almost standing still as I stood up on my bike pedaling, but had lost all forward movement and I just barely made it to the edge of the bottom of the driveway to steer my bike in before I fell over on the street from no forward movement. 

This is one of the steepest hills I have seen in many years.  Out by Aledo, TX.

Maybe if I was half my age and not riding a 29 pound steel touring bike loaded with other gadgets ... and maybe if I wasn't 66 years old at the time in 2017.  :-)

Aledo TX Killer Hill