By the way I wanted to tell people its possible to sorta quick build structures. By giving yourself the kits, and using the durability/amount value you can get the bridge of your desires.
For instance amount of 5 for the bridge gave Red Zen, while 6 gave Iron Bridge. 4 gave the Brick Staircase.
You can build them as many times and you only have to pay for one. However I soon later realized I reached and surpassed the limit to how many structures there are... yay. Worst of all I started building another bridge so which accepts no donation and never completes, tom nook kinda has a heart attack when I try to demolish stuff because I bet its trying to say "I have to many structures" and "Im working on a structure" at the same time.
So yeah, my save is now kinda locked up in terms of bridges and inclines. I guess im going to wait for a save editor that can fix that, on top of forcing the villagers I want in my town. I spent the past 3 days working on this shit XD. Kinda feel bummed since it took so long to finally get that freedom I wanted only to be rather limited from the get go. I was trying to make due with the whole daily thing too.
I'm in the same boat. Placed a bridge and it is asking for 0 bells. I cannot contribute. Also, when i talk to the Npc > infrastructure, the option remove the bridge is blank. can't get rid of it nor complete it...
Here's the code for inclines/bridges. can't find 3 inclines... DO NOT USE or you may mess up your save like me.
[Slot1 => Bridge - Stone Bridge]
04100000 AC3B90C0 000010D6
04100000 AC3B90C4 00000000
[Slot1 => Bridge - Suspension Bridge]
04100000 AC3B90C0 000010D6
04100000 AC3B90C4 00000001
[Slot1 => Bridge - Zen Bridge]
04100000 AC3B90C0 000010D6
04100000 AC3B90C4 00000002
[Slot1 => Bridge - Log Bridge]
04100000 AC3B90C0 000010D6
04100000 AC3B90C4 00000004
[Slot1 => Bridge - Red Zen Bridge]
04100000 AC3B90C0 000010D6
04100000 AC3B90C4 00000005
[Slot1 => Bridge - Iron Bridge]
04100000 AC3B90C0 000010D6
04100000 AC3B90C4 00000006
[Slot1 => Bridge - Wooden Bridge]
04100000 AC3B90C0 000010D6
04100000 AC3B90C4 0000000A
[Slot1 => Bridge - Brick Bridge]
04100000 AC3B90C0 000010D6
04100000 AC3B90C4 0000000B
[Slot1 => Incline - Stone Staircase]
04100000 AC3B90C0 000010D7
04100000 AC3B90C4 00000000
[Slot1 => Incline - Red Steel Staircase]
04100000 AC3B90C0 000010D7
04100000 AC3B90C4 00000001
[Slot1 => Incline - White-Plank Ramp]
04100000 AC3B90C0 000010D7
04100000 AC3B90C4 00000002
[Slot1 => Incline - Log Staircase]
04100000 AC3B90C0 000010D7
04100000 AC3B90C4 00000003
[Slot1 => Incline - Brick Staircase]
04100000 AC3B90C0 000010D7
04100000 AC3B90C4 00000004
[???Slot1 => Natural Ramp]
[???Slot1 => Blue-Plank Ramp]
[???Slot1 => Blue Steel Staircase]