Sorry, but you can't get a new bridge for the DS version. I am not to shore about the others but I am pretty shore you can't for those either.
Hope this helps
From your bezzie jezzie
15,000 bells
round about 800 bells
200,000 bells = new bridge built I think 350,000 bells = fountain by bus stop You can get a lighthouse or another building but I can't remember how many bells it is.
For as many bells as you want. Don't make them too high. No one will buy them.
its 240,000 bells and have a freind come and shop at Nookway
You can tell when you go and talk to Pelly at the Civic Center in the Town Hall. Once you donate some bells, it tells the total of how many bells you have donated overall.
you don't pay for it its given to you by someone i think its the bank you will get it in a letter
It takes approximately one week.
You can get a lot of Bells by finding good furniture and selling it to Tom Nook. Or you could dig up fossils because they sell for some Bells. You could invest in turnips. Then when they are selling for a lot sell them to Tom Nook.
You can either catch bugs, fish, fossils, clothes, furniture, shells...etc, or make sure you have 20,000 in your savings account and turn off your ds (after saving). Set the year to 2099. When you next turn on animal crossing, check your mail. You should have one letter saying the bank gave you 99,999 bells. The 99,999 bells should be in your savings account. You may do this as many times as you like. Hope I helped! :)
To do this you will either have to wait a long time, or risk many, many weeds (you can get rid of them all with wisp though). First you have to actually have a decent amount of bells which you have to then place in your bank account. You can wait over time for the bells, or you can change the time setting to the future where you will have suddenly lots of money.
there is one money cheat but it doesnt always work you set the clock on animal crossing to as early as it will go (about the year 2000) and then in the year 2000 save as many bells as you have into the bank/town hall and then save and quit, after that go on it again set the clock to as late as it will go (about the year 2099) and then hopefully you will have a letter in your mailbox saying you got loads of bells from interest, hope this cheat works for you!