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| N-340 road | |
|---|---|
| Country | Spain |
| Type | Nacional |
| Route | 340 |
| Terminus a | Barcelona |
| Terminus b | Cádiz |
N-340 road
The N-340 road is a long-distance Spanish highway that historically linked Barcelona on the Mediterranean Sea to Cádiz on the Atlantic Ocean, traversing major regions such as Catalonia, Valencian Community, Murcia, Andalusia and passing near cities like Tarragona, València, Alicante, Murcia (city), Cartagena, Almería, Málaga, and Seville. Established during the 20th century, the route follows parts of older Roman roads and medieval tracks, connecting ports, industrial centres, military bases and tourist destinations including Sitges, Salou, Benidorm, Torrevieja, Orihuela, Cartagena (Spain), Algeciras, Cádiz Bay and Costa del Sol. The corridor interfaces with national and regional networks such as the Autovía A-7, Autopista AP-7, Autovía A-3, Autovía A-31, Autovía A-30 and Autovía A-92, and has played a key role in freight, commuter and holiday travel along the Spanish Mediterranean and Andalusian littoral.
The route runs from the vicinity of Barcelona through Tarragona (province), skirting the Ebro Delta, threading past Tarragonès towns like Vila-seca and Cambrils, then crossing into the Province of Castellón near Vinaròs and passing Peñíscola, Benicarló, Castellón de la Plana, before entering the Province of Valencia and Valencia (autonomous community) where it serves Sagunto, Puzol and the metropolitan area of València. Southward it traverses Alicante (province), touching Gandia, Oliva, Dénia, Benidorm, Villajoyosa, Alicante (city), and continues past Elche, Orihuela into Murcia (region), passing Murcia (city) and Cartagena. In Andalusia, the alignment continues through Almería (province), Níjar, Mojácar, Roquetas de Mar, Almería, then west through Granada (province) periphery, Málaga (province) including Vélez-Málaga and Málaga (city), and finally west to Málaga Bay, Estepona, Gibraltar (nearby), Algeciras (Bay), Puerto de Santa María and terminates in the province of Cádiz. The N-340 interchanges with regional roads like the N-232, N-332, N-340A spurs, and meets motorways such as AP-7 and A-7 at multiple points.
The corridor overlays segments of Roman itineraries such as the Via Augusta and medieval pilgrimage and trade tracks linking Barcelona and Cádiz, including medieval maritime trade with Genoa and Venice-era contacts. During the 19th century the Bourbon state and later the Second Spanish Republic invested in coastal communications; the road was formalized in national plans under the Francoist Spain era transport policy and later reclassified in democratic Spain following the 1978 Spanish Constitution and the 1984 devolution of competences to autonomous communities like Catalonia and Andalusia. Post-1970s tourism booms centered on Benidorm, Torremolinos and Marbella prompted major upgrades; European Union cohesion funds and programs linked to Trans-European Transport Network objectives contributed to modernization. Strategic uses included access to Cartagena (naval base), interactions with Seville logistics, and links to ports such as Barcelona Port Authority, València Port, Alicante Port and Algeciras Port.
Key urban nodes and junctions along the corridor include Barcelona, Tarragona, Vinaròs, Castellón de la Plana, València, Gandia, Dénia, Benidorm, Alicante, Elche, Orihuela, Murcia (city), Cartagena, Almería, Vélez-Málaga, Málaga (city), Estepona, Marbella, San Roque, Algeciras, Jerez de la Frontera, and Cádiz. Major connections include intersections with AP-7, A-7, A-3, A-31, A-30, A-92, and national roads such as N-232 and N-332, providing freight links to ports like Algeciras Port and passenger connections to airports including Barcelona–El Prat Airport, València Airport, Alicante–Elche Airport, Murcia–Corvera Airport and Málaga Airport.
Traffic patterns reflect dense commuter flows in metropolitan belts of Barcelona, València, Alicante, Murcia (city) and Málaga (city), seasonal peaks driven by tourists to Costa Blanca, Costa del Sol and Costa de Almería, and freight movements to container hubs such as Port of Barcelona, Port of Valencia and Port of Algeciras. The corridor has experienced high accident rates historically, prompting analyses by Dirección General de Tráfico, regional transport authorities of Catalonia, Valencian Community, Region of Murcia, and Andalusia, and interventions tied to European road safety initiatives. Rail parallels include services of Renfe Operadora on the Mediterranean corridor, high-speed links like Madrid–Barcelona high-speed rail line and regional commuter networks such as Cercanías Madrid (indirectly related via intercity hubs).
Many N-340 sections have been duplicated, reclassified or replaced by higher-capacity motorways such as the A-7 and tolled AP-7; projects involved public administrations including Spain's Ministerio de Fomento (now Ministerio de Transportes, Movilidad y Agenda Urbana), autonomous governments, and EU funds. Recent works include bypasses around Algeciras, urban desaturations in Benidorm and Castellón de la Plana, grade separations near Murcia, and coastal protection measures influenced by European Green Deal resilience goals. Proposed future developments emphasize multimodal freight integration with port logistics at València Port and Algeciras Port, intelligent transport systems piloted in collaboration with entities like INECO and coordination with transnational corridors including Mediterranean Corridor (TEN-T).
The route traces landscapes and heritage sites such as the Roman remains of Tarraco, medieval castles in Peñíscola, the baroque architecture of València Cathedral, modernist landmarks in Barcelona by Antoni Gaudí, the fortified port of Cartagena (Spain) with its naval heritage, the Moorish legacy around Granada and Almería, and the maritime culture of Cádiz. It serves gateways to resorts like Benidorm, historic towns like Jerez de la Frontera known for sherry and equestrian traditions at the Royal Andalusian School of Equestrian Art, and cultural festivals including Fallas de Valencia, Semana Santa processions in Seville and Málaga, and summer festivals on the Costa del Sol. The corridor also links natural areas such as Ebro Delta Natural Park, Parque Natural Cabo de Gata-Níjar, and Doñana National Park, attracting hikers, birdwatchers and cultural tourists.