The historical Siuslaw Bridge in Florence is experiencing traffic today and until August 18 from 8:00 am until 5:00 pm according to the news. But on the radio news it says, they will be like that for 24 hrs/day. Waiting period would likely be from 30-45 mins. It is unusual to wait long in this small town.
So be patient and plan your time accordingly.
Going into town took us about 25 minutes to wait then going back about 20 minutes.. not bad at all because i was busy clicking the camera. One way to make myself busy and not bored.