Autovía A-66

The Autovía A-66 is a major highway in western Spain. It includes European Route E803. The road is an upgrade of the N-630 which is being undertaken section by section. The route roughly corresponds to the ancient Roman 'Silver Route' connecting the cities of Mérida and Astorga. The final section of road south of Benavente is under construction as of October 2013 with completion anticipated in 2015.

Autovía A-66
Autovía Ruta de la Plata
Route information
Part of E-803
Length809 km (503 mi)
Major junctions
FromNorth end
ToSouth End
Highway system

Route

Autovía A-66 starts at Seville with a junction with the Autovía A-49. It heads north through the wooded Sierra Morena and passes over the Puerto de las Marismas. It then crosses from Andalucia into Extremadura. It heads through the town of Zafra on the way to Mérida crossing the Tierra de Barros. It ends in a junction with the Autovía A-5.

North of Mérida the road crosses the Sierra de San Pedro to the town and world heritage site of Cáceres. Then the road crosses the Tajo and Almonte rivers. The road heads north east as it enters the Sierra de Gredos. The road becomes the N-630 (at km 489) south of the town of Plasencia. It then heads to the university town of Salamanca via Béjar. The road crosses the Rio Tormes and the Autovía A-62The section north of Zamora leading to the Rio Duero. 18 km north where the road will meet the reservoir Embalse del Esla de Ricobayo is under construction as of October 2013. Here the N631 heads north west to the Autovía A-52, and the N-630 along the Rio Esla to the Autovía A-6. 6 km north the A-66 branches to the north with a downgraded N-630 parallel. The road then enters the province of León.

Autopista AP-66

At León the road becomes a toll Autopista AP-66 and the N-630 a trunk road as they pass through the Montes de León and Sierra Cantábrica. South of León there is a junction with the Autopista AP-71 and Autovía A-231. The N-630 crosses the Alto del Rabizo (1,160m) and Puerto de Pajares (1,379m).

Inaugurated on 11 August 1983,[1] the AP-66 avoid these two passes and goes through the Negrón Tunnel, the sixth longest tunnel in Spain. Entering Asturias, the roads re-converge 36 km south of the next major city Oviedo. There is a junction with the Autovía A-64 and AS-I. The A-66 finally ends 13 km north of Oviedo at a junction with the Autovía A-8 near Gijón on the Atlantic Coast.

References
  1. "El ministro inauguró la primera fase del Huerna" (in Spanish). El Comercio. 12 August 1983. Retrieved 7 August 2018.
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