The formation of the several
Autonomous Communities in the early 1980s led to the transfer of many roads to the new regional authorities. Since then, several of those roads have been upgraded to motorway level in order to ensure the internal vertebration of the region, or to provide alternative high-capacity routes to those managed by the national government when those were inadequate or saturated. All of the old
comarcal roads (C-nnn) comprising the secondary network were transferred to the Autonomous Communities, splitting them up as necessary; while the
national roads (N-nnn) that formed the primary network were mostly kept by the State. The level of control each community has over its road network varies: the
Basque Country and
Navarre have received the titularity of nearly all roads in their territories, while in other communities the regional network coexists with and complements the national one. Whatever the extension of the road network under its control, all communities have full powers over naming and identification of their roads, provided no name conflicts with a national road or a regional road of a neighbouring community.
Andalusia The regional highway network of
Andalusia is very extensive, as the territory itself spans nearly a fifth of Spain. There are no special codes for identifying highways: upgraded roads usually keep their name and sign color (orange, green or yellow). However, confusion sometimes arises due to the fact that most regional roads start with the letter A (for
Andalucía), which is also used by the national government for highways. The most notable Andalusian freeways are the A-92 or
Washington Irving's route (with 400 km from Seville to Granada and Almería is the longest regional freeway in Spain), the A-316 & A-318 or Olive Tree's route (200 km from Estepa to Úbeda, still under construction) and the A-381 or Bull's route (90 km from Jerez de la Frontera to Algeciras)
*: planned/in construction Aragon The community of
Aragon has only very recently started building its own highway network. The first span was opened to traffic just in 2008, and there are at least three more highways in study. Due to the limited financial capabilities of the Aragon regional government, many of them might be built as
toll roads.
*: in construction —
†: planned Asturias The highway network in the mountainous
Principality of Asturias is severely limited by the complexity of its relief, with a dense network of
river valleys in between ranges such as the
Picos de Europa. Vertebral Asturian motorways have identifiers in the style of national ones, that is, white text on blue background, while roads in process of upgrading keep their old nomenclature until the full route is completed. Such is the case, for example, with the AS-III, which is an upgrade of the AS-17. The prefix is always AS, and Roman numerals are used.
*: planned/in construction Balearic Islands All of the roads in the
Balearic Islands were transferred to the regional government when the Autonomous Community was formed, and several are now under the competence of the several Island Councils (
Consell Insular). The prefix denotes the island, and the second letter (if any) is lowercase.
Autopista identifiers are white on blue background, while twinned roads closer to the
autovía category keep their identifiers.
Basque Country A special case together with Navarre, the
Basque Country has received full powers over most roads in its territory, including the
national roads that comprised the primary network, and nowadays only the AP-1 and the AP-68 are under the direct authority of the Spanish government as part of the
Red de carreteras del Estado (National Road Network). Currently, roads are managed by the three
Diputaciones Forales of the Basque provinces. The fact that such transfer took place before the thorough renaming of national roads and highways in 2003 makes the naming of transferred "national" highways inconsistent with the national network: the A-1 is still called the N-I in the Basque Country, and the same identifier (A-8) applies to the tolled and toll-free parts of the
Autopista del Cantábrico in Biscay. Furthermore,
new highways built since then by the provinces have one of the following prefixes:
A for
Álava-Araba,
BI for
Biscay (
Vizcaya-Bizkaia) or
GI for
Guipúzcoa-Gipuzkoa.
*: in construction —
†: planned Canary Islands Following the example of the other insular community in Spain, all roads in the
Canary Islands are under the authority of either the regional government or one of the several Island Councils (
cabildo insular). The prefix denotes the island, and identifiers are usually white on blue background.
Castilla-La Mancha Another community that has recently started building its own high capacity road network,
Castilla-La Mancha has completed one
autovía and has at least five more in varied states of advanced planning and building. In the flat
La Mancha, relief does not usually require costly tunnels and bridges, though the region does contain several
nature reserves including the
Tablas de Daimiel National Park wetlands. Highway identifiers are white on blue background.
*: in construction —
†: planned Castile and León The largest community in Spain by land area,
Castile and León has a dense road network, but until recently most of its highways had been part of the national system. The terrain is varied, from the plains of the
Meseta to the rugosities of the
Montes de León, and archeological remains abound. Regional highways are renamed to A-nnn, always with three digits to avoid clashes with the national network, but usually keeping the original number of the upgraded regional road CL-nnn. Identifiers are white on blue background.
*: in construction —
†: planned Cantabria The only community without a high-capacity network of its own,
Cantabria is severely held back in such a development by a highly mountainous terrain that multiplies the cost of building any kind of expressway. Thus, its population is served by the national highway network supplemented by regional conventional roads.
Catalonia The second most populated community in Spain,
Catalonia has a thorough regional road network, with several highways managed by the
Generalitat de Catalunya. Also, the state-owned highways previously known as A-16 through A-19 were transferred to the Catalan government and renamed according to the new regional guidelines enacted in 2004. Highway identifiers are white on blue background.
*: in construction —
†: planned Extremadura A sparsely populated community,
Extremadura has a terrain that can be considered favourable for a regional highway plan, as the interior is mostly flat. However, the fact that its northern and north-eastern borders are blocked by
mountain ranges with typical elevations of over the main
mesa, combined with the mentioned demographics of the territory (Extremadura ranks the 5th community in Spain by land area, but only the 12th by population, and none of its cities reach 200,000 inhabitants) has traditionally limited the penetration of even the national highway network. Nevertheless, the community is in an excellent position for connections between Spain and Portugal (the national highway A-5 reaches Portugal through
Badajoz in Extremadura), and in the last decade, the regional government has revealed an ambitious plan that would create four to six regional highways. In addition to the vertebration of the Extremaduran territory, some of these roads are explicitly meant to provide alternative routes to the two national highways in the region (A-5 and A-66), establishing connections between them and an additional route to Portugal to the north of the current one. It is the policy of the regional government to avoid twinning existing roads (and thus replacing them with the upgraded
autovía), so instead all autovías are built from scratch even if they are parallel to the old road. All Extremaduran highways are currently named EX-An, with white identifiers on blue background. Some of them have branches named EX-An-Rm, which also have white-on-blue identifiers, but such branches need not be highways themselves even if they are built concurrently with the main road.
*: in construction —
†: planned Galicia Often compared to
Scotland because of its orographic similarities,
Galicia is a hilly but not mountainous region with an approximate population of 3M people. Its highway network mainly functions as the terminal part of trips, since the vertebral function is mainly coped by the national system. Identifiers start with AG (for
Autovía/Autoestrada galega) and are white on blue background.
*: in construction —
†: planned La Rioja The small and mountainous region of
La Rioja has just started planning regional highways of its own. After an initial plan to upgrade the LR-134 road (
Calahorra—
Arnedo) was downgraded to a simple twinning with roundabout intersections, a study is now being drawn to build at least a true highway connecting the national highways AP-68 and A-12, with a possible projection into the south of the community. Another highway would provide access from the regional capital beltway to the tolled AP-68.
*: in construction —
†: planned Madrid The region containing the capital city of Spain,
Madrid ranks the 3rd community by population, and is by far the most
densely populated. Even though it contains the centre of the national radial highway system, the Madrid regional government (traditionally more committed to the expansion of the
Metro system) has dedicated vast resources during the last decade to upgrade the regional road network and, where necessary, create new high-capacity roads that both complement the national system and vertebrate zones of the community not covered by the national network. Madrid regional highways have codes that are no different from other regional roads, with orange, green and yellow backgrounds, even for newly built highways like the M-45. Usually, the upgrade of long roads, twinned or not, to the motorway level is not undertaken at once, so the list below only contains the itinerary for the spans that actually run as highways or have been planned to. For example, the M-506 is "broken" at its connection with the M-419 and the A-42 by a succession of
roundabouts until the link with the R-4, so in the list it is separated in two highway stretches.
*: in construction —
†: planned Murcia The coastal region of
Murcia is an important touristic destination in Spain. Its nearly 1.5 million inhabitants are mainly concentrated in the eastern part of the community, from Murcia city to the coast, while inland zones of Yecla, Jumilla and Caravaca de la Cruz are more sparsely populated. The national highway network provides good connectivity along the coast, with three highways links with Andalusia (A-91, A-7 and the tolled AP-7) and another three with the Valencian Community (A-7 and the tolled AP-7 and AP-37), but only the A-30 motorway connects Murcia with inland Spain. It is thus the goal of the regional government to provide alternative highway corridors that connect the inland border of Murcia to the coastal zones. All in all, the autonomous government is investing heavily in its highway network, both for trips along the coast and inland-coast connectivity. Due to the expansion of the regional network that this effort is expected to produce, Murcia has recently implemented a new naming scheme for its regional highways, more in accordance with the national network. When the renaming is complete, all highways will be identified by white-on-blue names that start with RM (for
Región de Murcia).
*: in construction —
†: planned Navarre The
Foral Community of Navarre is another community with full powers over most roads in its territory. However, in contrast to the neighbouring
Basque Country, the regional government has decided to keep the identifiers of some highways — namely, those which were part of a national highway before being transferred — in sync with the national system. The only road in Navarrese territory not under the authority of the regional government is the national toll highway AP-68 (
Autopista Vasco-Aragonesa), which was kept by the state to avoid a four-pronged management by the concessionaire and the Basque, Navarrese and Spanish governments.
*: in construction —
†: planned Valencian Community The regional motorways do not have identifiers different from other roads, so orange, green and yellow backgrounds are possible. All identifiers are prefixed with CV for
Comunitat Valenciana, the official name of the region. The regional highway CV-10 is currently being expanded to the boundary with
Catalonia and will be transferred to the national Government as a new stretch of the A-7 (
Autovía del Mediterráneo). The same applies to the CV-40 highway.
*: in construction —
†: planned ==See also==