| Country: | DEU |
| Type: | B |
| Route: | 433 |
| Map: | Hamburg Fernstraßen.svg |
| Length Km: | 14.3 |
| States: | Hamburg, Schleswig-Holstein |
The Bundesstraße 433 is a Bundesstraße (federal road) in Hamburg.
The road begins in Hamburg-Eppendorf at the intersection with the B 5 and continues via the Tarpenbekstraße, Rosenbrook, Alsterkrugchaussee (in Hamburg-Groß Borstel), Flughafen-Umgehung (Airport bypass, in Hamburg-Fuhlsbüttel), the Krohnstiegtunnel, and the Swebenweg (in Hamburg-Niendorf) to the B 432, connecting to the AS Hamburg-Schnelsen-Nord on the A 7.Between its beginning in Eppendorf and the street Deelböge, the B 433 is part of the Hamburger Ring 2.
In the 1990s, the B 433 followed a different alignment after the Hamburg Airport bypass. Past Fuhlsbüttel, it traveled via the Alsterkrugchaussee, Langenhorner Chaussee (in Hamburg-Langenhorn), Ochsenzoll, Ulzburger Straße (in Norderstedt), Hamburger Straße (in Henstedt-Ulzburg and Kaltenkirchen) to the B 4 in Lentföhrden. The B 433 north of Hamburg was downgraded in 2002, with the section north of Norderstedt being downgraded to a Landesstraße, and the section within Norderstedt being downgraded to a local road.[1]