Madrid High Trestle Bridge: Photo by Justin Hardecopf. The 13-story high bridge over the Des Moines river is a half mile long and was built on concrete piers that previously held a railroad bridge. 41 steel frames form a twisting tunnel. #Bridge #Iowa
Long ago, the War-Khasis people of Meghalaya in northeastern India began forming the roots of the rubber tree into bridges that would give them passage over the river. The root bridges are extraordinarily strong and because they are alive and still growing, the bridges actually gain strength over time—and some of the ancient root bridges used daily by the people of the villages around Cherrapunji may be well over 500 years old.