Concurrent bridging & routing on a channelized interface.

Is it possible to concurrently do bridging & IP routing on a DS3 channelized interface on a cisco router? Suppose I have a bunch of customers with T1 coming in through a DS3 channelized interface and they want to be part of a layer 2 VLAN & concurrently have other customers with T1 coming in with IP feeds to the Internet. Any help is appreciated. jld. :))