Straße. By the 18th century, the High Road was no longer used. In 1934, the town of Camberg joined the company for preparing the Frankfurt-Cologne Autobahn. This Reichsautobahn (now Bundesautobahn 3/Europastraße 35) was built between 1937 and 1939. In the Goldener Grund, its route roughly follows the old High Road's. Bad Camberg is linked to the Autobahn through the like-named interchange. This interchange was not in the original plans but was built later to let the communities in the Goldener Grund share in the transport and economic development. In 1954, the Bad Camberg-Ost service centre was opened on the Cologne-bound side of the Autobahn; a year later followed Bad Camberg-West on the Frankfurt-bound side. Via Publica - Bundesstraße 8 In the 12th century, bit by bit, roads were also built in the valleys. This was due not only to the upswing in goods trading but also to the growing danger on the High Road. Thus came into being the Emstalstraße (“Ems Valley Road”), a part of the old Via Publica between Brussels and Prague. In 1768, the Electorate of Trier began expanding highways into boulevardlike roads, and so it also was for the road from Limburg to the border between Würges and Walsdorf, which was finished in 1780. This work on the road, which ran by the Untertortum west of what was then town limits, was after two or three years, owing to the great volume of traffic, once again utterly destroyed. Given this, the town proposed to have the road run from Erbach to the Obertorturm, then through the town to the Untertortum and thence on to Würges. The proposal was, however, turned down. Owing to the Electorate of Trier Road-Building Ordinance of 1753, the citizens of the Amt of Camberg were obliged to perform compulsory labour on the road early in the year and in autumn. Wages and material costs for the bridgebuilding were borne by the Electoral Court Chamber (kurfürstliche Hofkammer), while the communities and the Amt were expected to lay on the materials. Only after the Revolution of 1848 was all compulsory labour abolished. Out of this road developed the Imperial Long-Distance Road (Reichsfernstraße) 8 in the early 20th century, now Bundesstraße 8, which currently runs through Erbach, Bad Camberg and Würges and by Oberselters. For those first three places, a bypass road has been planned for more than thirty years. Bus and railway In 1876,