Hana Highway - Road to Hana
The Hana Highway is a 64.4-mile-long (103.6 km) , longest, coastal scenic route in the world. To the east of Kalepa Bridge, the highway continues to Kipahulu as Hawaii Route 31 (the Piilani Highway). This tour covers 59 single lane bridges, over 640 turns and curves, through lush, tropical rainforest. Most of the concrete and steel bridges date back to 1910.