.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important))You can help expand this article with text translated from the corresponding article in Finnish. (March 2009) Click [show] for important translation instructions.
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The first portion of the motorway was constructed in the 1960s between central Helsinki and Kehä III, and extended to Lohjanharju in the 1970s. In the other end of the road, the motorway stretches from eastern Turku to Lahnajärvi near Suomusjärvi. In 2005, a portion of motorway between Lohjanharju and Lohja was opened. The last part of the motorway (Lahnajärvi–Lohjanharju) was opened on January 28, 2009. This part of motorway contains five tunnels totalling 5.2 kilometres (3.2 mi). The longest tunnel (2,230 m or 7,320 ft, double-bore) is also the second longest road tunnel in Finland.
E18
