The proprietor of our cabin - Pai Homey - recommended a driver to us and he took us around for a good part of a day to see the bridge as well as the giant Buddha and the land split. It was inexpensive and a nice way to see sights close to town. We did see people renting motor bikes to visit some of the same places but didn't feel we knew the area well enough to do that.

The rice is just turning in my village, so I guess it will be much the same

If not mistaken it will be around November to December.

Basing on google photos and previous description I beleive you can find it in google by seraching for Buddha Bamboo Bridge or coordinates 19.322597, 98.394505