Shepherd’s Bridge

To figure out why I’ve dubbed this the “Shepherd’s Bridge,” click the image to see the full scene. I’m really more interested in how this bridge compares with the bridge in the background of Van Eyck’s Rolin Madonna.

Pierre Choinet, Le livre des trois âges, en vers Source: gallica.bnf.fr
Bibliothèque nationale de France. Département des manuscrits. Smith-Lesouëf 70, fol. 12r.