NEW YORK - The MTA worked through the night to ensure a smooth Friday commute despite seeing several more inches of snow. 

According to a transportation spokesperson, some outdoor subway lines were briefly suspended so that snowblowers and de-icers could get to work on the rails. 

Subways and buses are operating on a normal schedule, except for some express trains running locally. All bridges and tunnels are open. 

The MTA also released a behind-the-scenes video of its snow operations, showing some of the heavy machinery crews have been using to keep all subway tracks clear.