In the 1980s a toll superhighway shortened distance from Tripoli to Athens by 50 km. It has about 7 interchanges. The two-laned superhighway was opened and bypasses much of Argolida. It began to pass by opening what it became one of the longest tunnels in Greece, the Artemisi Tunnel. Its length is nearly 2 km and did not extended into GR-8/E65/E94 interchange until 1997 when distance from Tripoli to Athens was shortened to 148 km.

In the 1980s, a bypass for Tripotamia and Psari was opened with two one-way narrow bridges from north of Paradeisi to Megalopoli. A by-pass of Megalopoli was opened in 2000.

In 1998, construction of a bypass from north of Paradeisi to near GR-9A became completed in 2000 with no curvy roads.

In 2000, construction of a superhighway from Megalopoli to the junction of the old GR-7 (Tripoli-Argos Route). Part of it began in 1999 and opened in around 2001 in the northeast and in 2002 near Rapsommati and Vrysoules and a tunnel is included. In 2003, the section of the highway from near Leontari to Megalopoli to near Thana was opened.

In 2003, a mudslide affected the freeway and crippled access from Nemea to near the boundary with Argolis. The blame is that the road was poorly planned during the 1980s. It was reopened with 2-lanes and a few months later, the superhighway with 2 lanes was fully reconnected again.

Several mudslides were reported in the tunnel E of Megalopoli but it was minor and was repaired.

Places:

• Kalamata
  
• Thouria
  
• Aia
  
• Allagi
  
• corvy roads (old road)
  
• Derveni and bypasses
  
• Paradeisia, and bypasses
  
• Old Road:
  
  • Tripotamia
    
  • Psari
    
  • Second branch: near Leontari to Megalopoli
    
    • Megalopoli, junction with GR-76
      
  • curvy roads
    
  • Palaiochouni
    
  • south of Athinaio
    
  • near Asea
    
  • Thana
    
  • Tripoli
    
  • Steno
    
  • Neochori
    
  • curvy roads
    
  • Achladokampos
    
  • near Nea Myloi
    
  • Argos
    
  • west of Mycenae
    
  • junction with GR-66
    
  • West branch:
    
    • Corinth (GR-8) interchange
      
    • GR-8, west of Corinth
      
• New Road, not GR-7:
  
• near Veligotsi
  
• south of Perivolia
  
  • Central: downtown Corinth, northern terminus
    
• near Rapsommati
  
• Rapsommati Tunnel
  
• east of Tripoli
  
• GR-37/E962 interchange
  
• old GR-7 interchange
  
• interchange with GR-74 and northbound GR-33
  
• Nestani interchange
  
• Artemisio Tunnel
  
• Ancient Nemea interchange with GR-66
  
• Corinth interchange
  
• Junction with GR-8A/E94 eastbound, exit from superhighway (interchange)
  
• Service road interchange
  
• End of