The Humber is a significant river in England, flowing from the Ouse River near York and emptying into the North Sea. It serves as a natural boundary between the counties of Yorkshire and Lincolnshire. The river is approximately 40 miles long and is known for its wide estuary, which is an important habitat for various wildlife. The Humber Bridge, which spans the river, is one of the longest suspension bridges in the world. Opened in 1981, it connects the cities of Hull and Grimsby. The bridge is a vital transportation link and has become an iconic landmark in the region.