How long does it take to walk from the Eiffel tower to Musee D'Orsay?

If you head North from the Tower until you hit the Seine and then turn right and walk alond the river, it will take you 30-45 minutes. It's not the most direct route but it is very beautiful as you can see a lot of the city. The museum will be on your right, it has huge statues of animals outisde where you buy your tickets.