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Asset Category: Rail System Infrastructure Rehabilitation

Sequence of Metrorail Openings

Line Segment Farragut North to Rhode Island Ave

Gallery Pl-Chinatown To Dupont Circle National Airport to Stadium-Armory To Silver Spring To New Carrollton To Ballston-MU To Addison Road To Van Ness-UDC Gallery Pl-Chinatown to Pentagon To Huntington To Grosvenor To Shady Grove To Vienna/Fairfax-GMU To Wheaton

To U St/African-Amer Civil War Memorial/Cardozo

To Van Dorn Street To Anacostia To Greenbelt To Franconia-Springfield To Glenmont Columbia Heights to Fort Totten To Branch Ave To Largo Town Center New York Avenue

Stations

Miles

Date

5

4.6

3/29/1976

1

none

12/15/1976

1

1.1

1/17/1977

17

11.8

7/1/1977

4

5.7

2/6/1978

5

7.4

11/20/1978

4

3

12/1/1979

3

3.6

11/22/1980

3

2.1

12/5/1981

1

3.3

4/30/1983

4

4.2

12/17/1983

5

6.8

8/25/1984

4

7

12/15/1984

4

9.1

6/7/1986

2

3.2

9/22/1990

3

1.7

5/11/1991

1

3.9

6/15/1991

3

2.9

12/28/1991

4

7

12/11/1993

1

3.3

6/29/1997

1

1.4

7/25/1998

2

2.9

9/18/1999

5

6.5

1/13/2001

2

3.2

12/18/2004

1

none

11/20/2004

The Metrorail system is 106 miles long, including 51 miles of subway (below- ground), 9 aerial miles (above-ground), and 46 surface-level miles. This totals 212 miles of track, since the rail system has two tracks. The oldest sections of Metro’s rail system were put into service in 1976, and the newest opened in 2004. These segments generally require rehabilitation every 40 years. The useful life of system components will vary greatly depending on their function and will deteriorate at different rates based on their location. For example, components in deep tunnels with water penetration will deteriorate at a faster rate than those in a dry, well- ventilated area of a station. Therefore, to keep the system in a state of good perfor- mance, Metro will begin a comprehensive rehabilitation of the rail infrastructure for the first time in its history.

Multiple systems and equipment are in- stalled within the rail stations and tunnels to provide safe, reliable service. Several of these critical components are apparent to the transit rider (e.g., public address sys- tems) but many are “behind the scenes” (e.g., uninterrupted power supply (UPS), that provides emergency power when utility power is not available). All of these rail infrastructure elements require peri- odic investment to maintain their struc- tural integrity and functionality. The Rail System Infrastructure Rehabilitation how- ever, does not address the steel running rail needs which are addressed under the asset category “Track and Structures.”

The Metrorail system is a two-tracked system—one track heading in each direc- tion. When Metro needs to perform ma- jor maintenance work on a section of the system, that segment must be taken out of service, thus altering service patterns. To minimize service disruptions, Metro conducts maintenance on weekends, in the evenings, when ridership is low, and

34 Capital Needs Inventory

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