I think for DOT that under 140/90 is acceptable. Between the 140-160/90-99 range you will still be approved but for one year rather than two. 160-180/100-109 you are given a 3-month card and are expected to reduce your BP to the acceptable level. Only above 180/110 is someone automatically disqualified.
142-80 should be fine. They might only give you the year card though, and you'll want to work on getting it a little lower, though, working as a drivers helper should help, especially if you have been somewhat sedentary.
I think you only need the DOT card to be a driver, though, so you may have had a different physical.