Puente de los Franceses (Madrid) Puente de los Franceses (Madrid) The Puente de los Franceses (Bridge of the Frenchmen) railway viaduct is located in Madrid, Spain. Comprising five semi-circular brick skew arches, it was built in the second half of the 19th century to carry the railway line from the north (Madrid - Venta de Baños - Irun) across the River Manzanares. The bridge is named after the nationality of the engineers who devised the project, who were of French origin. The bridge is also known as the French Bridge. The bridge was built between 1860 and 1862, along with other construction work on the
1811–12 New Madrid earthquakes 1811–12 New Madrid earthquakes The 1811–12 New Madrid earthquakes were an intense intraplate earthquake series beginning with an initial earthquake of moment magnitude 7.5–7.9 on December 16, 1811, followed by a moment magnitude 7.4 aftershock on the same day. They remain the most powerful earthquakes to hit the contiguous United States east of the Rocky Mountains in recorded history. They, as well as the seismic zone of their occurrence, were named for the Mississippi River town of New Madrid, then part of the Louisiana Territory, now within the US state of Missouri. There are estimates that these stable continental region