Meine Liebe!
Die herzlichsten Grüße von hier sendet Dir
    Dein Ernst
Du mußt entschuldigen, daß ich nicht früher geschrieben habe, ich war ein paar Tage unterwegs. Mir geht es gut hoffe auch selbiges von Dir.

My dear,
Heartfelt greetings from here,
   sent by your Ernst.
You must excuse that I did not write earlier, I was on the road for a few days, I am well, I hope you are well too

The Wikipedia article on the bridge has two interesting pictures, one on a postcard from 1907, you can see where the corner building has a more ornate roof than the one in this postcard, and a second one of the present day where the buildings around the bridge have had either a partial or a total rebuild.