LEGO Duplo Train Bridge And Tracks Expansion Set 42 Pieces | Raise a toddler’s railway play to the next level with the Train Bridge and Tracks Expansion Set (10426). This creative build-and-rebuild toy lets toddlers add an elevated bridge to their LEGO® DUPLO® Town interactive train sets (10427 and 10428, sold separately) and elongate the route with 8 straight train track pieces that connect to any LEGO DUPLO train set.