Lift Bridge No 20
This is a lift bridge.
|Lift Bridge No 23||1 mile, 5¼ furlongs|
|Lift Bridge No 22||1 mile, 2¼ furlongs|
|Longwaste Bridge No 21||2¾ furlongs|
|Longwaste Wharf||2½ furlongs|
|Longdon Aqueduct||1¼ furlongs|
|Lift Bridge No 20|
|Lift Bridge No 19||2 furlongs|
|Lift Bridge No 18||5 furlongs|
|Railway Bridge No 17||6 furlongs|
|Long Lane Bridge No 16||1 mile, 1¼ furlongs|
|Eyton Lower Lock||1 mile, 4¾ furlongs|
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Nearest Water pointTravel to Wappenshall Junction, then on the Shropshire Union Canal (Birmingham and Liverpool Junction Canal - Newport Branch - Main Line) to Norbury Junction, then on the Shropshire Union Canal (Birmingham and Liverpool Junction Canal - Main Line) to Norbury Junction Services
Nearest Rubbish disposalTravel to Wappenshall Junction, then on the Shropshire Union Canal (Birmingham and Liverpool Junction Canal - Newport Branch - Main Line) to Norbury Junction, then on the Shropshire Union Canal (Birmingham and Liverpool Junction Canal - Main Line) to Norbury Junction Services
Nearest Chemical toilet disposal
Nearest Place to turn
Wikipedia has a page about Lift Bridge
A vertical-lift bridge or just lift bridge is a type of movable bridge in which a span rises vertically while remaining parallel with the deck.
The vertical lift offers several benefits over other movable bridges such as the bascule and swing-span bridge. Generally speaking they cost less to build for longer moveable spans. The counterweights in a vertical lift are only required to be equal to the weight of the deck, whereas bascule bridge counterweights must weigh several times as much as the span being lifted. As a result, heavier materials can be used in the deck, and so this type of bridge is especially suited for heavy railroad use.
Although most vertical-lift bridges use towers, each equipped with counterweights, some use hydraulic jacks located below the deck. An example is the 52-foot (16 m) span bridge at St Paul Avenue in Milwaukee (see also table bridges). Another design used balance beams to lift the deck, with pivoting bascules located on the top of the lift towers. An example of this kind was built at La Salle in Illinois, USA.
The biggest disadvantage to the vertical-lift bridge (in comparison with many other designs) is the height restriction for vessels passing under it. This is a result of the deck remaining suspended above the passageway.