Passenger boarding bridge

A passenger boarding bridge including a tunnel section including a plurality of tunnels which are telescopically fitted to each other and are movable relative to each other in a front-rear direction so that the tunnel section is extendable and retractable, the passenger boarding bridge comprising:

• a first walkway section constituting a walkway of an inner tunnel of adjacent tunnels;
• and
• a second walkway section constituting a walkway of an outer tunnel of the adjacent tunnels, the walkway of the outer tunnel including a plurality of floor members which are arranged in the front-rear direction and are coupled to each other,
• wherein the second walkway section includes an endless string-shaped member supported so that the endless string-shaped member is rotatable along a virtual vertical plane parallel to the front-rear direction, and the plurality of floor members are supported by the endless string-shaped member,
• wherein a walkway surface of the first walkway section of the inner tunnel and a walkway surface of the second walkway section of the outer tunnel are at a predetermined equal height position,
• wherein in a case where the tunnel section is retracted, the endless string-shaped member of the second walkway section is guided so that the floor members are moved down to an underside of the inner tunnel, and
• wherein in a case where the tunnel section is extended, the endless string-shaped member of the second walkway section is guided so that the floor members are moved up from the underside of the inner tunnel.