from Chateau's link
Drive along the Gaillard Highway passing Albrook and Clayton on your right and the Miraflores locks on your left.
Continue past the Pedro Miguel locks, past the community of Paraiso, past the Summit Golf Club and go under a small railroad bridge inscribed 1929.
Immediately after the underpass, turn left on to Gamboa Road.
Pass the entrance to the Summit Botanical Garden on your right.
After approximately 11 kilometers you will arrive at a single-lane bridge that crosses the river to Gamboa.
To STRI dock (follow the signs from the Gamboa bridge): After crossing the bridge, continue straight. Pass the former gas station and the ACP dock (Dredging Division) on your left, and the Gamboa Post Office and the colorful Santa Cruz houses on your right. Before this road turns to the right, take the sand road to the left to the STRI dock.
The trip takes about 40-45 minutes (without traffic jams). You can follow the Gamboa (Rainforest Resort) signs.
Gamboa Railway
another Panama Railway pic
This looks to me like its along the canal ,that looks like cranes or a ship? maybe near one of the locks?
I watched the video again , when the gate opens they don't rush ..
and I don't see that the Weavers are standing on the pitstop mat..this picture is bugging me ! have we ever been shown a picture of a team at the pitstop ? let alone cheering before ? >^%