A hint for tracking the bridge across the state ...

If you go to the DOT page with the Google Map / GPS tracker, leave the window open and let it run.

The GPS unit updates the map every 5 minutes. This means that every 5 minutes a new waypoint is put onto the map, but the old ones stay behind. You see what kind of progress it makes in each 5 minute interval.

Also, the points are clickable. Click on one and you'll see the time it was taken as well as the bearing and speed of the truck (Bearing is pretty easy to figure out on your own).

Speed is interesting. At 1:51 pm, it was doing 24 miles an hour on I-90. Ouch.

As far as I can tell, it only works if you leave the page running, so don't navigate away! It's pretty cool to follow.