The default IP of the bridge is 192.168.1.250
You should just be able to type that into the address bar of your browser if you haven't changed anything.
But i'm just echoing the manual. I'm not sure if you've already read it, but you can check out section 5.6.1 of
http://usfirst.org/uploadedFiles/5-FRC_Control_System-Configuration-0-5c.pdf
for more info