It is not exactly like standing on the glass panels of the Sky Tower, but look down long enough and a slightly queasy feeling starts to rumble in the pits of your stomach.
Soon enough, one of the journalists asks to go back - while the others walk further down the path. I stand on the corner pretending to be cool about the whole thing. A reporter on the other side is obviously fine, taking selfies.
The workers are on a smoko break, so there is not much action happening below, where a digger can be seen. There are sometimes loud cranking noises and above us is a 16-tonne crane with a large scoop mechanism attached.
"It's a big job,'' someone remarks.
Transport Minister Simon Bridges and Auckland mayor Len Brown arrive later, to sign what is dubbed to be an historic agreement between the Government and Auckland Council; for a 50-50 funding arrangement of the project.
It is the project Brown says has been his number one priority and was the culmination of six years of his city negotiating with the Government.
He is a happy man today and uses the word "fabulous'' more than once while speaking.
At seeing Bridges' signature, Brown laughs and says: "Yep, it's definitely in black and white.''
