Here's a suggestion.
KRLD (1080 AM)does traffic updates every 10 minutes.
If you have an appointment and are not at the incall, have your radio on while getting ready for at least an hour ahead of time. I'd bet most providers might not want to listen to conservative talk radio prior to an appointment because it might be the polar opposite of their political leanings, but at least you might keep abreast of traffic conditions since it is much more likely that 635 is slow or closed than open most days, especially any time around rush hours. (Rush hour on 635 starts at 2pm and ends around 8pm)
The traffic is on the 8's so 4:08, 5:08 etc.
I knew 635 was closed at Marsh with traffic backed up to 75 when I was on my way to the bank and so I knew to avoid 635 well before I reached it.