Moving Walkway Bridge Concept

I am a highschool student in the 10th grade. An idea could be a broader moving walkway, usually moving walkways can only sustain 1 person behind another but this idea of a broader moving walkway can sustain more than one person it could hold 2, 3, or even 4 in a column.

Supplies

Fusion 360, any computer that'll run fusion

Step 1:

this video is all you need for the 1st step

Step 2:

this video is all you need for the 2nd step

Step 3:

this video is all you need for the 3rd step

Step 4:

this video is all you need for the 4th step

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this video is all you need for the 5th step

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this video is all you need for the 6th step

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this video is all you need for the 7th step

Step 8:

this video is all you need for the 9th step