The Klatch Islands Riddle - by Luan Reyneke

Try solving this one!

Klatch islands are a group of islands formed by volcanic activity. Most of the islands are cooled down, but some are sill seething bowls of lava.

The islands are currently unconnected but you as mayor are going to build bridges so that one can go from one island to any other without flying or swimming. 

The different islands have enough materials for the number of bridges written on them. All of the material must be used. 

Bridges cannot turn corners or be over red lava pits. 

Only one bridge per block. 

Bridges can be any length but each block costs R150 but bridges connecting islands immediately next to each do not cost anything. 

Your funding is only R6000.