Rail System Infrastructure Rehabilitation
U n d e r t h e R a i l S y s t e m I n f r a s t r u c t u r e R e h a b i l i t a t i o n P r o g r a m , a l l M e t r o r a i l s e g m e n t s a r e
grouped into four “tiers” based on age. For example, Tier 1 includes the rail segment
Red Line Dupont to Silver Spring which was completed between 1976 and 1978 mak- ing it the oldest section of the rail system. Metro plans to sequence the infrastructure rehabilitation work based on these four tiers. The Metro Board has already approved work under Tier One (Red Line between the Dupont Circle and Silver Spring and Blue and Orange lines between the Stadium-Armory and Ronald Reagan Washington National Airport). The Station Enhancement Program work (e.g., platform slab and tile replacement) will also be coordinated under the Rail System Infrastructure Rehabilita- tion Program to improve the effectiveness of both programs.
Typical infrastructure rehabilitation work includes drainage pumping rehabilita- tion, fire system rehabilitation, ceiling tile replacement, tunnel ventilation, station chiller rehabilitation, automatic train control rehabilitation, tunnel lighting replace- ment, mid-life power system rehabilitation, replacement of un-interruptible power
supply systems and battery banks, replacement of traction power switchgear, and communications system rehabilitation. Metro’s Rail System Infrastructure Reha- bilitation Program needs over the next ten years total $1.8 billion.
Rail Line Segment Rehabilitation by CNI Projects ($1.8 Billion)*
Rehabilitation Tier Rail Tier 1
Rail Tier 2
CNI Project CNI 107: Red Line: Dupont to Silver Spring CNI 110: Blue/Orange/Yellow Lines: National Airport to New Carrollton CNI 108: Red Line: Dupont to Grosvenor CNI 113: Green/Yellow Lines: U Street to Anacostia CNI 109: Red Line: Grosvenor to Shady 1984- 1991 Opening Dates 1976-1978 1977-1978 1981-1984
Total (YOE, $ Mil- lions)
Grove and Silver Spring to Glenmont CNI 111: Blue/Orange/Yellow Lines: Rosslyn to Vienna CNI 114: Green/Yellow Lines: U Stree
Rail Tier 3 Rail Tier 4 to Greenbelt CNI 112: Blue/Orange/Yellow Lines: National Airport to Huntington and Franconia-Springfield and Largo Extension CNI 115: Green/Yellow Lines: Anacostia to Branch Avenue CNI 122: Next Segment Total *Cost estimates as of May 2009.