The Berlin Anhalter Bahnhof bridge, demolished after world war 2. Made for a customer who intends to 3D print it for use it in a model train diorama of 1920's Berlin. Explicitly made with 3D printing and use for a working model train in mind.
UPDATE: THe customer has 3D printed the whole bridge. Regretfully as you can see, the thin railings did not print well (as I suspected). But it has been solved by separating the railings from the main bridge section mesh and printing separately with stronger materials.