VG-20

The VG-20 is a Spain dual carriageway, essentially a free dual-lane highway. It serves as the second bypass road circling Vigo in the province of Pontevedra.
A tunnel under construction under the Park of Castrelos will join Avenida De Madrid with the First Belt.

Road

VG-20 loops around the south of Vigo, connecting the Bouzas–Castrelos segment to the AP‑9 motorway at Rebullón, forming a southern ring road around the city.
It is an autovía, meaning it is toll‑free and designed for high‑capacity urban traffic. Maximum speed is 120 km/h, with multiple junctions. Autopistas, by contrast, are tolled roads built to higher access standards.

History

Construction began around 2001 as part of an extension of the AP‑9 toward Tui. The VG‑20 was fully operational by November 2005, after ~€122 million in investment by Spain’s Ministry of Transport.
As of 2025, the Porto viaduct, a major span on the VG‑20, experienced structural damage. The Spanish government allocated €6.5 million for reinforcement, barrier replacement, and deck resurfacing on a section between km 9.65 and 10.0.
Additional resurfacing contracts worth approximately €2.1 million brought total investment in VG‑20 and adjacent A‑55 arterial roads to nearly €4.6M.