Mid Coast Trolley Construction: What are the random columns?

Clairemont Times File Photo 3/10/18 Mid Coast Trolley Construction Santa Fe St

Earlier in the week I posted some pictures of the under construction Mid Coast Trolley where I photographed some shots from along Santa Fe St as well as the Tecolote Rd/Sea World Dr Bridge.  I had a comment/question on our Instagram feed about the columns (pictured).

Clairemont Times File Photo 3/10/18 Mid Coast Trolley Construction Santa Fe St

I ran into Terry Martin the Construction Manager for the project and he informed me those 6 columns currently in place are for a future “skyway” his term.  Additional columns will be built in the future to complete the skyway

Screenshot Graphic Via Midcoast.org/SANDAG

Since the new Mid Coast Trolley tracks will be parallel and east of the LOSSAN (think cargo trains, AMTRAK) rail corridor there has to be a crossover as the Mid Coast travels north along the 5 and the LOSSAN tracks eventually head east.

Hence the reason for the columns the Mid Coast trolley will be up on the skyway for a brief duration crossing up and over the LOSSAN tracks.