looks like Silver Maple. It's possible it could be Sugar Maple too (like Upstate said), but check out Silver Maple. Unfortunately Silver Maples are pretty weak, it may be the weakest Maple in North America. I've seen Sugar Maples with flakey bark, usually more furrowed, darker and black staining. Another give away is the way it has codominate liters(main trunks); splitting off into two or more big sections. Which is unlike Sugar Maple. Also look at the buds if you can, The budding action in your pics also shows Silver M. It screams Silver to me.
Below, the first two pics are of Silver maple bark. The last picture is Sugar Maple with two variations of how the bark can be on those. From the pics you posted not only does the bark look like Silver Maple, the way it has grown is very typical for Silver Maples. Sugar Maples don't grow like that, Maybe once in a while, but I've never seen or heard of it.
Take care,
