The A16, a motorway in north-central Switzerland, is a divided freeway connecting the border to France to the A5 motorway, to the south on the Swiss plateau. The A16 motorway is a long, winding corridor that crosses the Jura Mountains from the Canton of Jura through part of the Bernese Jura area, to the flat part of the canton of Berne on the Swiss plateau. Therefore, it is called Transjurane. It is congruent with the National Highway N16 and following its anticipated completion around 2020–2030, it will connect the French motorway network with the rest of the Swiss national road network. The extension provides for both four-lane standard (highway) and two-lane sections of "express roads" (Autostrasse). In 2014, there were approximately 71 km (84%) of roadway in operation, other sections were under construction or in planning. Route Description at Boncourt in the Ajoie at the border between Switzerland and France. It runs south across the Ajoie plateau to Porrentruy, where it veers to the east. It crosses the northern Jura chains in Saint-Ursanne through two long tunnels, and reaches Glovelier, on the plateau of Delémont. After bypassing that city, the A16 turns south again, and follows the course of the Birse via Moutier and Court until Tavannes. Upon crossing Col de Pierre Pertuis through tunnels, the A16 follows the valley of the Suze (German:Schüss). It divides itself into a double lane road with separate downhill and uphill traffic on either side of the gorge of Taubenloch. It then reaches, the level of the Swiss plateau east of Biel/Bienne, connecting to the A5. Status of construction The following sections are in operation: Biel (Bözingenfeld) - La Heutte: Applies from entering Biel-North officially as a third-class national highway, because the section also supports bicycles and tractors. In each direction two lanes are almost continuously present. The running carriageway is separated, one on the west, the other on the eastern valley slope, the latter being largely the main track in use since 1965. La Heutte - Tavannes: route with standard highway, opened November 1997. Delémont - Porrentruy: Narrow highway with emergency stopping bays but without paved emergency lane; the tunnels of Mont Terri and Mont Russelin have one lane in each direction. The opening of the route took place in November 1998, with bypasses of Delémont and Porrentruy (each with standard highway) in September 2005. Moutier-North opened up to Choindez (Canton boundary BE