assembly 200 which is mounted to the gangway section 10 the roller assembly includes a roller bracket 202 having a base which is connected to the sloped surface 33 of the gangway wall 24 an axle 204 extends inwardly from the bracket 202 and receives a bearing 206 a roller 208 is mounted on the bearings 206 the roller assembly 200 protects the gangway 10 by allowing it to roll due to vertical movement when the opposite end of the gangway is connected to a floating dock or pier as can be appreciated because the roller assembly is mounted to the gangway side walls 24 rather than to the attachment surfaces 102 a b the roller assembly 200 and the ramp 180 can both be mounted to the gangway as various changes could be made in the above constructions without departing from the scope of the invention it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense for example the inner recesses 56 and 58 could be formed as a single column of recesses rather than as two columns of recesses alternatively the recesses could be formed in a pattern other than a 4 u00d7 3 array the cross sectional profile of the recess ceiling grooves could be.