This is further South on this road, but Mapillary shows 45 St S, not 45 St SW. Maybe different parts of the road have different signs, or it could have changed since this imagery was taken in 2017. There's also no imagery facing the other direction to see what the other sign on the stop lights says.
https://www.mapillary.com/app/user/lvl5?lat=46.861806604975&lng=-96.862350394294&z=14.072132613525069&focus=photo&pKey=246122360622802