The Bridge circled in red appears to be an Orbx Object Bridge rather than an actual default FSX object Bridge, this is likely found in FSX/Orbx/FTX_NZ/FTX_NZNI_05_SCENERY/scenery/ADE_FTX_NZNI_NZME_Objects.BGL
If you have installed both Orbx and VLC (VectorLandClass) in FSX, the two are not compatible, hence the potential to double up on objects such as a misplaced slightly off Mercer bridge as seen in the red circle.
In FSX if your using VectorLandClass and the VLC Libraries Enable these with a tick in the Scenery Library along with with any of Lawrie Roach Snowman's FSX 4X sceneries.
Then when you start FSX you go to Settings, Scenery Library and double check that you have un-ticked (Disabled) anything to do with installed Orbx scenery.
If you have Orbx NZNI installed and want to use Lawrie Roach Snowman's FSX 4X Mercer NZME recommended that you disable (un-tick) anything to do with FTX Orbx from the FSX Settings, Scenery Library such as the following scenery area's.
If you have already done this and it's still showing then it's likely some other duplicate .blg file in another folder possibly. Would pay to check the Add On Scenery/ Scenery folder just to see if an accidental misplaced NZME .bgl file has ended up in the scenery sub folder of the Add On Scenery
Also ensure that "NZME_Mercer-4X" in the FSX / Addon Scenery folder does not have the .bgl file named “AFX_NZME_ALT.bgl” this needs to be moved into the FSX / Scenery / World / Scenery folder