Mix the warm water, sugar, and yeast in a bowl. Let it sit for about 5 minutes until it becomes bubbly.
Add bread flour, salt, and melted butter to the yeast mixture. Stir until a soft, tacky dough forms. Knead on a lightly floured surface until smooth.
Transfer the dough into a greased bowl, cover it, and allow it to rise in a warm area for approximately 1 hour, or until it has doubled in volume.
Punch down the risen dough and divide it into 12 equal pieces. Roll each piece into an 8-inch log and place them on a parchment-lined baking sheet about 2 inches apart. Cover the logs and let them rise for 20 minutes.
Set the oven to 400°F and bake the breadsticks for 10 to 15 minutes, or until golden brown.
Remove them from the oven, brush with the extra melted butter, and sprinkle with garlic powder and salt. Serve warm.