YOUR OFFLINE GUIDE
Grand viaduct
66 pieces · 11 steps
Rows of cream arches support a long raised walkway. Build the matching pillars and join them with the deck for a satisfying larger project.
Before you build
Match the shapes
Compare each part with its picture and count its rows of studs. A square brick has two rows of two studs; a long brick has two rows of four. Use the full parts list for the exact shapes and quantities.
Follow the colours
Match the shapes and quantities. The pictures show our colours. Colour names in the steps refer to the pictures. Keep contrasting colours where they help you recognise the model.
Count the studs
The bumps on top are called studs. Count them when a step asks for a gap or an overhang. Put the build on a flat surface and keep its front facing the same way as in the pictures.
Add a little at a time
New pieces keep their colour in each step. Earlier pieces look lighter so you can see what has changed. Each list tells you exactly what to add.
Build together
An adult can read the steps while a child finds the pieces. The counts are for this one model. For two models to stay built, add their parts lists together.
This is a model bridge with fixed rails. No matching vehicle clearance has been checked.
Gather pieces
Match the shapes and quantities. The pictures show our colours. Choose your own colours for the same parts; changing a part’s shape is a different substitution.
A wheeled base counts as one complete part, including its attached wheels.
6 × Arch brick (2 × 4 studs)
Cream
Part 11198
8 × Double curved brick (2 × 4 studs)
Cream
Part 98223b
4 × Medium plate (2 × 6 studs)
Blue
Part 98233
16 × Square brick (2 × 2 studs)
Cream
Part 3437
8 × Square brick (2 × 2 studs)
Yellow
Part 3437
16 × Wall brick (1 × 2 studs, double height)
Blue
Part 4066b
4 × Wide plate (4 × 6 studs)
Green
Part 25549
4 × Wide plate (4 × 6 studs)
Yellow
Part 25549
Shape-only checklist
- 6 × Arch brick (2 × 4 studs)
- 8 × Double curved brick (2 × 4 studs)
- 4 × Medium plate (2 × 6 studs)
- 24 × Square brick (2 × 2 studs)
- 16 × Wall brick (1 × 2 studs, double height)
- 8 × Wide plate (4 × 6 studs)
Total: 66 pieces
Build
STEP 1 OF 11
Set four green wide plates side by side to make a long sixteen-by-six-stud base.
Add these pieces
- 4 × Wide plate (4 × 6 studs) (Green)
Earlier pieces are lighter in the picture.
STEP 2 OF 11
Start eight pillars with cream square bricks: four along the front edge and four along the back. Start at the left edge and leave two stud columns between neighbouring pillars.
Add these pieces
- 8 × Square brick (2 × 2 studs) (Cream)
Earlier pieces are lighter in the picture.
STEP 3 OF 11
Add one yellow square brick directly above each cream pillar. Keep the gaps between the pillars clear.
Add these pieces
- 8 × Square brick (2 × 2 studs) (Yellow)
Earlier pieces are lighter in the picture.
STEP 4 OF 11
Add one cream square brick directly above each yellow brick. All eight pillars should now be three bricks high.
Add these pieces
- 8 × Square brick (2 × 2 studs) (Cream)
Earlier pieces are lighter in the picture.
STEP 5 OF 11
Join the pillars with three cream arches along each side. Each arch starts one stud column in from its left pillar, sharing the middle pillars with its neighbour.
Add these pieces
- 6 × Arch brick (2 × 4 studs) (Cream)
Earlier pieces are lighter in the picture.
STEP 6 OF 11
Lay two blue medium plates end to end over each row of arches, starting one stud column in from the left edge.
Add these pieces
- 4 × Medium plate (2 × 6 studs) (Blue)
Earlier pieces are lighter in the picture.
STEP 7 OF 11
Bridge the front and back strips with four yellow wide plates, lined up over the base plates.
Add these pieces
- 4 × Wide plate (4 × 6 studs) (Yellow)
Earlier pieces are lighter in the picture.
STEP 8 OF 11
Add a row of blue wall bricks along the back edge of the deck, turned across the bridge.
Add these pieces
- 8 × Wall brick (1 × 2 studs, double height) (Blue)
Earlier pieces are lighter in the picture.
STEP 9 OF 11
Add a row of blue wall bricks along the front edge of the deck, turned across the bridge.
Add these pieces
- 8 × Wall brick (1 × 2 studs, double height) (Blue)
Earlier pieces are lighter in the picture.
STEP 10 OF 11
Cap the back rail with four cream double-curved bricks. Their rounded ends follow the length of the bridge.
Add these pieces
- 4 × Double curved brick (2 × 4 studs) (Cream)
Earlier pieces are lighter in the picture.
STEP 11 OF 11
Cap the front rail with four cream double-curved bricks. Their rounded ends follow the length of the bridge.
Add these pieces
- 4 × Double curved brick (2 × 4 studs) (Cream)
Earlier pieces are lighter in the picture.
READY TO PLAY
Your little story
Count the arches from both sides.
Imagine what lies beneath the bridge.
Tell a story about someone crossing the walkway.
Sources and credits
Original assembly. Part geometry adapted from the LDraw Parts Library; attribution and source notices retained. Colours are illustrative.
Revision: 0f94417f8536e73a5b20530f71d71225304f5cde32e6853a319074915f4b3f94
Source notices and software licences · Model and inventory record · Render record