LEGO Train Bridge and Tracks Expansion Set
Set #10426 · 2025 · 42 pieces · Quick build
Set Details
- Set Number
- 10426
- Name
- Train Bridge and Tracks Expansion Set
- Theme
- Duplo
- Year
- 2025
- Pieces
- 42
- Complexity
- Quick
- Build Time
- 5-15 minutes
- Ages
- 2+
- Type
- Play-focused
About LEGO Train Bridge and Tracks Expansion Set
LEGO Train Bridge and Tracks Expansion Set (set #10426) is a quick, accessible build with 42 pieces from the Duplo theme, released in 2025. The Duplo line features larger bricks designed for toddlers and preschoolers aged 1-5. Designed for young children aged 2+, the larger Duplo bricks are easy to handle and safe for small hands.
Set Highlights
- Oversized Duplo bricks — safe for children aged 2+, no small-parts risk.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Play-focused build with interactive elements designed for 2+ builders.
Who Is This Set For?
Parent & Child Building Activity
Duplo bricks are sized for small hands. Building together is the intended experience — simple steps and large pieces make it accessible for children aged 2+.
Open-Ended Creative Play
After following the instructions, the bricks can be taken apart and rebuilt freely. Duplo encourages iterative, creative play beyond the box model.
First LEGO Gift
A popular first-LEGO choice for young children — safe (no small parts), durable, and engaging enough to grow with the child.
Build Tips
Build together with your child — the visual steps are designed for parent-guided assembly.
After the guided build, encourage free rebuilding: Duplo bricks are designed to come apart easily and be reconfigured.
Store pieces in the original box or a divided container to keep this set separate from others.
Finding Instructions
Duplo instructions for set #10426 use large, simple step-by-step diagrams designed for parents to follow alongside young children. You can find them free on LEGO.com or upload a photo of the set to LegoFinder for instant identification.
Train Bridge and Tracks Expansion Set FAQ
Related Reading
More Duplo Sets
See all Duplo →
Also Released in 2025
All 2025 sets →Similar Build Difficulty
Sets at roughly the same piece count and complexity tier — different theme and year, but a similar build experience.
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