Chinese elm then? (Small serrated leaves, as compared to the American Elm, which has leaves ~4x bigger than Chinese Elm). The bark doesn't say American Elm to me - not deep enough.
I grew up on streets lined with Ulmus Americana, a most beautiful canopy covering the street.
The bark looked like this:

I grew up on streets lined with Ulmus Americana, a most beautiful canopy covering the street.
The bark looked like this:











