Railway Bridge and Track Extension Set (LEGO 10426)

About this set

This is the LEGO DUPLO Railway Bridge and Tracks Expansion Set (10426), a 42-piece scene expansion rated about 2/5 in difficulty. The box marks it as LEGO duplo with the number 10426, and the subject is a train track bridge. The build centers on an arched iron bridge with piers that lift the track into a raised, undulating route; the set also includes a barrier, flowers and a minifigure. The color palette covers gray, orange, green, beige, blue, red and purple, with gray and beige dominating the bridge and orange, red and purple accents on the barrier and flowers, keeping the bright DUPLO look. For building order, sort the piers by height first, then set the arched deck, and lay the track last while pressing the joints tight, so the deck does not take uneven load; attach the barrier where the figure stands and scatter the flowers at the bridge ends. With so few pieces and large molds, the main challenge is aligning the arch with the track, so line up the track connections before clipping the deck down. It suits families who already own a DUPLO train starter set and want to add a bridge to their line, and younger builders can handle it; at 42 pieces it is a line-boosting expansion rather than a standalone display set.