Negrón Tunnel

The Negrón Tunnel (Spanish: Túnel del Negrón) is an automotive tunnel which connects the provinces of Asturias and León in Northern Spain.

The tunnel provides an alternate route to the Puerto de Pajares, a mountain pass that is considered dangerous for motorists.

[1] The first of the two projected tunnels was opened in 1983 and worked provisionally as a single carriageway road.

[2] Works ended in 1997, with the opening of the second roadway in June 1997, which had 4,144 metres (13,596 ft) length and costed 7.443m pesetas.

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