Can Invisalign Work For Front Teeth with Bridgework On The Back?

Your question implies that your upper jaw is somewhat narrow.  There are two viable options you should consider.

1. If you want to use just Invisalign to widen the arch, then the bridge has to be eliminated by removing the pontic (fake tooth between the teeth used with the bridge), only to be replaced (or use an implant) after Invisalign treatment.  Leaving the bridge will hamper the expansion of the arch on the side where the bridge exists.

2. If considerable narrowness exists, consider using Functional Facial Orthopedics, which uses the principal of slow palatal expansion with a removable treatment appliance, prior to Invisalign.  Because expansion occurs at the mid-palatal suture and not where the side teeth are, the bridge could remain while the expansion occurs and potentially be used later when finished with Invisalign or braces.

3. The third option of surgery, which some may present, should not be considered as the potential side effects are many, and surgery is not necessary to widen the arches.

If all you are looking to do would be to straighten your front teeth and you have bridgework in the back you shouldbe able to successfully straighten the front teeth using invisalign.  The bridgework would not move but the front teeth can be moved.  Consult your dentist to see about your ability to get invisalign done.