VG-20

The VG-20 is a Spain dual carriageway, essentially a free dual-lane highway—that serves as the second bypass (Segundo Cinturón) othat circles Vigo in the province of Pontevedra, Galicia.

A tunnel is under construction under the Park of Castrelos that would join Avenida De Madrid (the main entrance to the Center of Vigo from the East) with the First Belt.

• Function: It loops around the south of Vigo, connecting the Bouzas–Castrelos segment (the First Belt) to the AP‑9 motorway at Rebullón, forming a southern ring road around the city.
• Length: About 11.4 km, of which approximately 9.5 km are solely VG‑20 and around 1.9 km coincide with the AG‑57.
• History: Construction began around 2001 as part of an extension of the AP‑9 toward Tui, and the VG‑20 was fully operational by November 2005, after ~€122 million in investment by Spain’s Ministry of Transport.
• Type: It’s classified as an autovía, meaning it is toll‑free and designed for high‑capacity urban traffic; generally max speed is up to 120 km/h, with multiple junctions and no tolls—unlike autopistas which are tolled roads built to higher access standards.

• The Porto viaduct, a major span (~347 m) on the VG‑20, has structural damage and is undergoing major repairs. The Spanish government allocated €6.5 million for reinforcement, barrier replacement, and deck resurfacing on a section between km 9.65 and 10.0.^[1]
• Additional resurfacing contracts worth approx. €2.1 million are under way, bringing total investment in VG‑20 and adjacent A‑55 arterial roads to nearly €4.6M. The projects aim to improve road quality and extend contract durations up to ten months longer than originally planned. ^[2]