I don't know if this is considered a steep overpass, but the Oak Street bridge in Hinsdale, Illinois that goes over the BNSF rail line.
I once had to go to Hinsdale Hospital and I remember crossing the bridge and it's really weird because you go up on a steep incline and down on a steep decline.
Also this bridge is so narrow there's a stoplight that allows one side of traffic to cross the bridge at once.