Royal Border Bridge Royal Border Bridge Royal Border Bridge spans the River Tweed between Berwick-upon-Tweed and Tweedmouth in Northumberland, England. It is a Grade I listed railway viaduct built between 1847 and 1850, when it was opened by Queen Victoria. It was designed by Robert Stephenson for the York, Newcastle and Berwick Railway and remains in regular use as part of the East Coast Main Line. Despite its name, the bridge does not span the border between England and Scotland, which is approximately further north. The bridge is long. It is constructed in stone with brick soffits to the arches. It has 28
Course of the Colorado River of this water is used for irrigation in the Mexicali Valley, one of Mexico's most fertile agricultural regions. Below the Morelos Dam the Colorado forms the international border for a short distance, between Baja California and Arizona, before reaching the Southern International Boundary at San Luis Rio Colorado, where it crosses entirely into Mexico. For the remainder of its course to the Gulf, the river forms the boundary between Baja California (west) and Sonora (east). "River", however, is a misnomer as the Colorado is dry or small stream most of the year, due to its flow being almost completely exhausted