In Build a Bridge!, you can use various materials such as wood, steel, and cables. Each material has different properties that affect the strength and flexibility of your bridge. Choose wisely to support the vehicles successfully.

You can test your bridge by clicking on the play button after building it. Vehicles will traverse your bridge, and if it collapses, you'll need to modify your design to ensure it can carry the weight.

To build a successful bridge, start by analyzing the gap and vehicle weight. Use triangles for support, balance the weight distribution, and avoid excessive material usage to save costs while ensuring durability.

You can unlock new levels and materials by completing existing levels with success. Each completed level earns you stars, which can be used to unlock additional content in the game. Keep practicing to progress!

When facing a difficult level, first analyze the requirements like vehicle type and load. Make a rough sketch of your bridge design to visualize the layout. Use the following steps for a structured approach:
1. Examine the gap and obstacles carefully.
2. Choose appropriate materials based on the vehicle's weight.
3. Build the basic structure with support beams.
4. Test your design, then revise based on failure points.