The street pre construction
Do you know why Japan can build high-speed rail and bridges that span major islands across the ocean? Because when they build a bridge, they simply make 130 schoolchildren stand on it every five years to test its safety. Cheap and effective: https://mainichi.jp/english/articles/20240924/p2a/00m/0na/017000c.
For construction to proceed, the city required three inspections:
Although only one inspector was expected, two people from the city actually showed up. The older inspector told me he had been working for the City of Duvall for 38 years and that the next day would be his last before retirement. In all those years, he said, he had never seen a project like this. They had the unmistakable vibe of the "old cop going on one last mission" movie trope.
Fortunately, the inspection itself was not too onerous. The only issue was that we didn't have the required road construction signs, so I had to urgently drive to a road construction supply store in Monroe, Washington, and rent a couple of signs.
The construction of the bridge took two days of work for two people: one day to assemble the rope bridge on-site, and another to attach it to the trees. After this heroic effort by NCS Construction Service, the bridge was up, and we passed the city inspections.
As a side note, I now have very little hope that California light rail can ever be built.
The ropes assembly
The street after construction
The ropes attached to the tree