A-1 (autovía)

The A-1 (also informally known as Autovía del Norte; Basque: Iparraldeko Autobia) is a Spanish autovía route which starts in Madrid and ends in Irun. It replaced the former national road from Madrid to France, the N-1 road. It carries the designation of European route E05, and, as one of the major north–south arteries of Spain, is one of the country's busiest highways.

Autovía A-1
Autovía del Norte
Route information
Part of E5 / E80
Length	371 km (231 mi)
Major junctions
From	Madrid
To	Irun
Location
Country	Spain
Highway system
Highways in Spain Autopistas and autovías National Roads

Between Burgos and Armiñón there is a toll alternative for this autovía, the autopista AP-1.

In 2011, work was ongoing to bring the section between Burgos and Madrid up to modern standards.

Sections

Autovía A-1 currently has two sections: one between Madrid and Burgos and another between Miranda de Ebro and Alsasua. Traffic through the 49.6 km discontinuity between Burgos and Miranda de Ebro is redirected to the N-I. Beyond Altsasu, traffic continues on the N-I to the French border.

#	From	To	Length	Designation
1	Madrid	Venturada	50.11 km	A-1
2	Venturada	Santo Tomé del Puerto		A-1
3	Santo Tomé del Puerto	Aranda de Duero	106.24 km	A-1
4	Aranda de Duero	Lerma, Burgos	42.91 km	A-1
5	Lerma, Burgos	Burgos	37.41 km	A-1
6	Burgos	Armiñón	87.35 km	N-I
7	Armiñón	Vitoria-Gasteiz	27.16 km	N-I
8	Vitoria-Gasteiz	Altsasu/Alsasua	46.69 km	N-I, A-1[1]
9	Altsasu/Alsasua	Idiazabal	16.05 km	A-1 [2]
10	Idiazabal	Donostia-San Sebastián	45.94 km	N-I
11	Donostia-San Sebastián	Irun	21.58 km	N-I

Major cities crossed

Autovía A-1

• Madrid
• Aranda de Duero
• Burgos
• Vitoria-Gasteiz
• Donostia
• Irun