According to the project website the bridge is still under construction, though I'm not sure how timely they are with updates: https://www.highway400dunlopannesunnidale.com/schedule.html

This news article says the expected completion is end of 2024: https://barrie.ctvnews.ca/bridge-demolished-to-pave-way-for-new-structure-over-highway-400-in-barrie-1.6528105