Bridge particularly for crossing a passage of a navigation channel

The bridge for crossing a channel of a waterway comprising:

• a span which can be moved by vertical translation between a low position for crossing the channel and in which the span rests on stationary support parts of the bridge, and a high position for opening the channel;
• a support structure supporting the span and located on a single side of the channel, the support structure including pulleys;
• and
• lifting means for lifting the span by traction and including two traction cables having first ends attached to respective sides of the span and second ends connected to a traction device, the two traction cables running over the pulleys of the support structure in a vertical plane passing through the middle of the span.

A bridge for crossing a waterway, the bridge comprising:

• a span movable vertically between a low position for crossing of the waterway on the span and blocking a vessel from passing the bridge, the span resting on stationary support parts of the bridge in the low position, and a high position opening the waterway for passage of the vessel past the bridge;
• a support structure for the span located on a single side of the channel;
• a balance arm pivotably mounted on the support structure and having opposed first and second ends;
• a traction cable extending from the span to the first end of the balance arm, and having a first end attached to the span and a second end extending beyond the second end of the balance arm;
• and
• a traction device connected to the second end of the traction cable and moving the span vertically, between the low and high positions, by pulling and releasing of the traction cable.

A bridge for crossing a channel of a waterway comprising:

• stationary supports;
• a span which can be moved by vertical translation between a low position for crossing the channel and in which the span rests on the stationary supports of the bridge, and a high position for opening the channel for navigation on the channel of the waterway, under span, with the span above and spaced from the stationary supports;
• a support structure supporting the span and located on a single side of the channel;
• and
• lifting means for lifting the span by traction from the low position to the high position and for lowering the span from the high position to the low position.