The name Hembrug refers to various geographic entities in the municipality of Zaanstad, in the Netherlands.

Area

The area called ''Hembrug'' was formerly a ''hem'', that is, a headland later diked in to become part of a

polder A polder () is a low-lying tract of land that forms an artificial hydrological entity, enclosed by embankments known as dikes. The three types of polder are: # Land reclaimed from a body of water, such as a lake or the seabed # Flood plains s ...

. Originally called ''De Hem'', it later became named after the bridge across the North Sea Canal; see below.

Bridge

The ''Hembrug'' is the name given to a swing bridge built in 1878 to carry the railroad between Amsterdam and Zaandam in the Netherlands across the North Sea Canal, and to its replacement, a longer and higher bridge built between 1903 and 1907, after the canal had been widened to cater for an increase in ship traffic. The newer bridge was approached by a long embankment, to enable the railroad to reach deck level on a moderate grade or slope. During World War II, the bridge, which provided railroad access to the northern part of Holland, was rigged with demolition charges by the Germans, who loaded the central pier with 400 boxes, each containing 3 kilograms of explosives. Twice those explosives were removed by Dutch resistance operatives: on the night of 26 September 1944, two members of the local swimming team, Jaap Boll and Remmert Aten, dived down and got into the central pier by way of an underwater opening, and removed the explosives. The Germans discovered that the explosives had been removed when they saw packaging material floating around, so Remmert Aten swam down a second time, after the explosives had been replaced. The operation of the bridge was twice disrupted by ships colliding with it. On 20 October 1974 Santa Fe Construction's semi-submersible derrick lay barge ''Choctaw II'' caused damage which was not completely repaired. The bridge was made obsolete by the construction of the Hemtunnel, which became operational in 1983. On 27 May 1983 the last train passed over the bridge. Denied the status of

Rijksmonument A rijksmonument (, ) is a national heritage site of the Netherlands, listed by the agency Rijksdienst voor het Cultureel Erfgoed (RCE) acting for the Dutch Ministry of Education, Culture and Science. At the end of February 2015, the Netherlands ...

, the spans were removed later that year, and the bridge piers felled by explosives in the spring of 1985. Hemtunnel1

Train station

From 1907 until 1982, ''Hembrug'' was the name of a halt on the railroad line north of the bridge, built for the employees of three fact