Transportable bridge structure

Claim 2

A bridge module.(30,31) comprising two longitudinal main girder structures (32) and an intermediate deck (33) having a deck surface, characterised in that the main girder structures are foldably connected one along each side of the deck and are foldable between an operative position in which the main girder structures offer extensions of the deck surface on either side of the deck for use and a closed position is which the main girder structures are folded beneath the deck.

Claim 3

A bridge module according to Claim 1, characterised in that the main girder structures are longitudinally tapered in depth when seen from a side of the module in its operative position.

Claim 4

A bridge module as Claimed in Claim 1 or 2, characterised in that the main girder structures are box girder structures.

Claim 5

A bridge module accordinq to Claim 1,2 or 3, characterised in that each main girder structure comprises at least one lifting attachment on a surface offering the extension of the deck surface.

Claim 6

A bridge module according to anyone of Claims 1 to 4, characterised in that each of the lifting attachments is recessed.

Claim 7

A bridge module according to any one of Claims 1 to 5, characterised in that each main girder structure comprises at least one lifting attachment on a surface which is facing a corresponding surface of the other main girder structure when the module is in the operative position.

Claim 8

A bridge module according to any one of Claims 1 to 6, characterised in that the deck comprises two lip portions and in that each of the main girder structures comprises a shoulder portion, each of which lip portions bears on a respective one of the shoulder portions when the module is in the operative position.

Claim 9

A bridge module according to any one of Claims 1 to 7, characterised in that the module further comprises a bracing means between the main girder structures for bracing the module when in the operative position.

Claim 10

A bridge characterised in that it comprises at least one intermediate bridge module and two end bridge modules, each of the bridge modules comprising two longitudinal main girder structures and an intermediate deck having a deck surface, the main girder structures being foldably connected one along each side of the deck and being foldable from an operative position in which the main girder structures offer extensions of the deck surface on either side of the deck for use to a closed positionin which the the main girder structures are folded beneath the deck, the main girder structures of the end bridge modules being longitudinally tapered in depth when seen from a side of the module in its operative position, the main girder structures of the intermediate bridge module(s) not being so tapered, wherein each of the end bridge modules and the intermediate bridge module(s) are connected together to form a bridge.

Claim 11

A bridge characterised in that it comprises at least one intermediate bridge module and two end bridge modules, each of the bridge modules comprising two longitudinal main girder structures and an intermediate deck having a deck surface, the main girder structures being foldably connected one along each side of the deck and being foldable from an operative position in which the main girder structures offer extensions of the deck surface on either side of the deck for use to a closed positionin which the the main girder structures are folded beneath the deck, the main girder structures of the end bridge modules being longitudinally tapered in depth when seen from a side of the module in its operative position, the main girder structures of the intermediate bridge module(s) not being so tapered, wherein each of the end bridge modules and the intermediate bridge module(s) are connected together to form a bridge.

Claim 12

A bridge according to Claim 9, characterised in that the bridge comprises additional link means between one or both of the end bridge modules and an intermediate bridge module to alter the angle ofapproach offered by the one or both of the end bridge modules.