The first two work quite nicely, the subtle HDR in the first doesn't jump out at you. It seems more like just a fabulously exposed image, good composition as well.
The second one looks more like a black and white photo that used a red filter. As far as IR goes, I don't see the tell tale white vegetation or black skies. However, I think it's still a very successful image.
The third, i feel wasn't so successful. The bridge looks great, no problems there, and HDR can produce some amazing effects, but combining the color on the (virtually) B&W IR just looks like selective coloring to me, an effect which I am not a big fan of.
Very nice series!