Oh I will for sure, Thank you!
You can check, not sure from where? may CBSA website?. I believe they are 24/7/ . People from both sides (Canada to US and US to Canada) cross borders all time 24/7.
I had done the same for my mother in March 2017, I still remember i got passport back, i think in one week from CIC. Canada post mis-routed it.
I got PR for my mother waiting 7 years. My father passed away while waiting. Anyhow! The day I got passport and landing papers from CIC, I went to Niagara falls border flag pole.
It was snow storm warning that evening, Still I had started around 7:00 PM from GTA, and reached around 9:00/10:00PM in Niagara falls. It was snowing there as well. US side officer asked my "
What brings you here today" . I said "
I was waiting since 7 Years and was not able to wait anymore". The wait and dealing with CIC, MPs and Immigration minister/staff is nightmare. They can double your pain not less. Trust me.
US side officer was nice and all done in 10 minutes. Opened the door for my vehicle and showed me the way back to Canada. Although Canada side, CBSA officer get my papers immediately but put there in Pidgin hole for next officer to come and check. I and my mom has to wait there around 45 minutes. But all done with CBSA officer in 5 minutes.
PS: If I can still remember, don't get out of your vehicle on US side. I don't think they like it for some reason. Even you don't need to. For some reason i did . But over all US side officers were good.
Also do not forget to take YOUR PR card/Canadian Passport with you to enter back to Canada again. I could not recall if CBSA checked that for mine at that time. But technically you need it when you are entering back to Canada.
I wish all the best for you. Please let me know if you any questions.
Thanks