1999 Major Investment Study

A 1995 -1999 Major Investment Study of the I-66 corridor between the Capital Beltway (I-495) and Route 15 in Haymarket produced the following recommendations.

• Add a general purpose lane with full shoulders in each direction between the Beltway and Route 50.
  
  
• Convert the existing peak period HOV lane to a general purpose lane between Route 50 and the end of barrier separated lanes.
  
  
• Significantly improve corridor bus service.
  
  
• Extend Metrorail from Vienna to Centreville.
  
  
• Construct two barrier-separated reversible HOV lanes from I-495 to the Route 28 Bypass or beyond.
  
  
• Coordinate corridor improvements with the upgrading of the I-66/I-495 interchange.