The Steelers and tight end Darnell Washington have reached agreement on a four-year, $42M extension

What was the longest time the Steelers stuck with a QB before moving on after Bradshaw?

The QBs drafted in the first 3 rounds after Bradshaw:

B. Brister - 7 yrs
M. Kruczek - 4 yrs (while drafted high, he was only really a backup)
M. Malone - 7 yrs
N. O'Donnell - 5 yrs
K. Stewart - 8 yrs

Crazy part is that the one QB they kept the second shortest was also the one that took them to a SB. I guess Cowher decided after that loss it was time to start over.

(The recent Pickett pick set a precedent. But you have to wonder if it really was Pickett forcing himself off the team.)