I've never driven in the United States with a truck and it worries me a little bit. Do the weigh stations for trucks in the USA work the same way as they do in Canada? When I enter them with a truck, do they still have 2 lanes, one for the empty truck and the other one for the loaded trucks? Or we must all pass on the weigh scale?
It varies from state to state. Most probably have a bypass lane.
But there are some like the one on I-80 in NJ where bypass signal is on approach lane and it will direct you whether or not to enter a weigh station or re-enter the highway.
There are also bypass rules that exist for some states too which you can find online. There are also applications like: Drivewyze that provide bypass information.