Stopped on the Interstate

We were driving on I-90, right near mile marker 40.5 - and all of a sudden we were at a dead stop due to traffic.  There was a block in place because further down the road some numbskull went ahead and had a DUI crash.  We sat for a full 55 minutes before we were allowed to move again.  So, I was able to be "on" an interstate for the first time.