Build a bridge with the given amount of materials to let the train safely cross the valley.

All levels are solvable. Please try the Lite version before you buy the game!

The paid version has the following advantages:
⇒ no ads
⇒ free build mode


The permissions are used as follows.
- Write to SD card: Savegames will be stored to SD card
- Internet access: Google Play services leaderboards

Step 1. Download X Construction Mod (Paid for free Free purchase) APK file on HappyMod.com.
Step 2. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted.
Step 3.X Construction Mod (Paid for free Free purchase) APK will begin installing on your device. Simple.

Step 1. Download HappyMod APK file on HappyMod.com.
Step 2. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted.
Step 3.Search X Construction Mod, click Download.
Step 4: You can download 100% working mods on HappyMod with one click.