No. of 20 ft (6 m) 492 Pylons No. of 50 ft (15 m) 260 Pylons No. of 100 ft (30 m) 795 Pylons Additional length 24 miles required (38.6 km) 4.4.1.2. I-5 Visualization - The preliminary route is shown in yellow. Bend radii are shown in red. Route - Follows I-5 to minimize land/right of way purchase costs. Figure 30. I-5 Section of proposed Hyperloop route.