NHTSA Complaint #11549794 — 2022 FORD F-550 SD

I was driving about 57 mph headed NW on I270 in the north Denver metro area. I went over a bridge abutment and the vehicle started shaking violently in the front end. I let off the gas but the extreme vibration/shaking continued until I slowed down to around 20 mph. I thought I had lost something in the front end. Then it happened again when I was driving between I70 and US 50 in western Colorado. I was only going 30 miles an hour and hit a rotomilled section of asphalt(a perfect edge drop to the rotomilled pavement) and the violent shaking started but ended much quicker as I slowed down to about 10 mph. First incident was 8/12/23 and second incident was 8/21/23