Sticky Rice Bridge 糯米橋

Located in Guo Hsing village (國姓鄉), Nantou, the Sticky Rice Bridge was constructed in 1940 using sticky rice, brown sugar and lime (add some oily fried greens and it would've been eaten within a year) in place of mortar (according to my wife) and/or in place of metals (according to the Taipei Times). It remains standing but currently unusable after having gone through numerous floods and earthquakes - most notably, the September 21, 1999, earthquake which registered a 7.6. Here's a photo of it in better days, along with a brief history (in Chinese).

Update: I will not translate the entire article but I do believe that 黏築石塊 (stick/adhere to, building, rock,piece) is probably mortar. My wife kicks The Times ass.