What kind of animal is this? Amphibian or Reptile

I was sitting outside having dinner last night at a Bloomington, Indiana eatery (Upland Brewery) and I noticed this peculiar creature crawling up the side of the building.  It looks like either a lizard or a salamander.  The problem I have is that it was much bigger than I’ve ever scene an Indiana salamander get, and I’ve never heard of lizards like this occurring this far North.

I’d say it was about 6-8 inches long.  Its skin didn’t look like it was very slimy like you’d expect in a salamander.  I snapped a few pictures with my iPhone camera.  Can anyone tell me what kind of animal this is?