text: oneway=alternating is nearly ok, it should be oneway=alternate (which is still in proposal stage but ok to use). Read more at http://wiki.openstreetmap.org/wiki/Proposed_features/alternate_oneway .. See also https://www.mapillary.com/map/e/mgIgEiukOSEDx0g2dSE4Kw which shows a photo (series) from before, in and after the tunnel bridge.