Bridge structure and method of providing a smooth transition way across a threshold by means of the bridge structure

A method of providing a smooth transition way across a threshold in an openable doorway by a bridge structure, comprising:

• a. arranging an interior ramp structure on the floor on the opposite side of a door to which the door opens, wherein the interior ramp is built up from one or more ramp elements and optionally tile elements, in one or more layers, assembled to provide a first section of an inclined ramp having a substantially upper smooth transition surface, having a first height along a first side adjacent the threshold and a height along a second opposing side is as shallow as possible thereby being substantially flush with the floor, and
• b. if necessary arranging an exterior ramp and/or surface structure on the side of the door to which the door opens up to, the exterior ramp and/or surface structure having an underside arranged on a support surface and an upper surface, wherein the ramp and/or surface structure has a height in use between the undersurface and the upper surface lower than the lowest point of the door, wherein the exterior ramp structure is built from one or more tile elements in one or more layers and optionally ramp elements;
• c. arranging a bridge element, comprising a first bridge part fastened to the interior ramp structure, wherein the first bridge part by a hinge is pivotably connected to a second bridge part, wherein the bridge element comprises one or more layers of tile and/or ramp elements, wherein the bridge element has an upper surface and a lower surface, wherein the first bridge part has an inclined part and a straight part and between upper and lower surfaces of the straight part has a first thickness and wherein the second bridge part when the straight surfaces on the first and second bridge parts are flush, has a lower surface in contact with the support surface or the upper surface of the exterior ramp.