Expect major delays this weekend (Photo by Mario Tama/Getty Images)

The MTA is taking advantage of the long weekend to do some heavy track work. Expects delays and diversions on 17 lines.

A transit spokeswoman says major projects are already underway to repair tunnel lights, replace switching systems, overhaul stations and tracks. This weekend, there is more work than usual because contractors need to finish their outdoor work before the weather gets colder.

The MTA Web site provides full details on the schedule changes. They are also listed here:

1,2
From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, downtown 1 trains skip 86th, 79th, 66th, 59th, and 50th Streets due to station rehab work at 96th Street and 59th Street and tunnel lighting installation.

2
From 5 a.m. to 12 noon, Sunday, October 11, Manhattan-bound 2 trains skip Jackson Avenue due to rail repairs.

3
From 12:01 a.m. to 6:30 a.m., Saturday, October 10 and Sunday, October 11, and from 12:01 a.m. to 5 a.m. Monday, October 12, 3 trains are extended to 34th Street due to station rehab work at 96th Street and 59th Street and tunnel lighting installation.

4
From 1 a.m. to 1 p.m., Sunday, October 11, Manhattan-bound 4 trains run local from 125th Street to 42nd Street-Grand Central due to cable work.

5
From 11:30 p.m. Friday, October 9 to 5 a.m. Monday, October 12, there are no 5 trains between Dyre Avenue and 149th Street-Grand Concourse due to cable work. Free shuttle buses replace the 5 between Dyre Avenue and East 180th Street. 2 trains make all stops between East 180th Street and 149th Street-Grand Concourse.
From 6:30 a.m. to 1 p.m. Sunday, October 11, Manhattan-bound 5 trains run local from 125th Street to 42nd Street-Grand Central due to cable work.

7
From 4 a.m. Saturday, October 10 to 10 p.m. Sunday, October 11, Manhattan-bound 7 trains skip 111th, 103rd, 90th, 82nd, 74th, 69th, 52nd, 46th, 40th, and 33rd Streets due to track panel installation.

A
From 11:30 p.m. Friday, October 9 to 5 a.m. Monday, October 12, free shuttle buses replace A trains between 207th Street and 168th Street due to tunnel and lighting rehabilitation. Customers may transfer between the Broadway or Fort Washington Avenue shuttle buses and the A trains at 168th Street.
From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, downtown A trains skip 50th, 23rd, and Spring Streets due to the Chambers Street Signal Modernization project.

At all times until December 21, 2009, Manhattan-bound A trains skip Beach 90th and Beach 105th due to station rehabilitation.

At all times until January 18, 2010, Far Rockaway-bound A trains skip Beach 67th, Beach 44th, and Beach 25th Streets due to station rehabilitations.

A, S
From 11:30 p.m. Friday, October 9 to 5 a.m. Monday, October 12, free shuttle buses replace the A and S between Howard Beach-JFK Airport and the Rockaways due to rehabilitation work on the South Channel Bridge. Customers may transfer between the A train and the Far Rockaway or Rockaway Park shuttle buses at Howard Beach.

C
From 6:30 a.m. to midnight, Saturday, October 10 and Sunday, October 11, downtown C trains skip 50th, 23rd, and Spring Streets due to the Chambers Street Signal Modernization project.

From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, there are no C trains between 168th and 145th due to tunnel and lighting rehabilitation. Customers should take the A instead.

D
From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, D trains run local between 34th Street and West 4th Street due to the 5th Avenue Interlocking Signal System Modernization.

From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, D trains run local between DeKalb Avenue and 36th Street due to the Culver Viaduct Reconstruction.

From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, Manhattan-bound D trains run express from Bay Parkway to 9th Avenue due to platform and rubbing board repair.

E
From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, E trains are rerouted on the F line between Manhattan and Queens due to the 5th Avenue Interlocking Signal System Modernization:
• There are no E trains between 34th Street and World Trade Center.
• Queens-bound E trains run on the F from 34th Street-Herald Square to 21st Street-Queensbridge; trains resume normal E service from Roosevelt Avenue to Jamaica Center.
• Manhattan-bound E trains run on the F line from 47th-50th Streets to 34th Street/Herald Square.

From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, Queens-bound E platforms at Queens Plaza, 23rd Street-Ely Avenue, Lexington Avenue-53rd Street and 5th Avenue stations are closed due to the 5th Avenue Interlocking Signal System Modernization: Customers may take the R, G or 6 instead.

Note: Free shuttle buses connect the Court Square G/23rd Street-Ely Avenue, Queens Plaza, and 21st Street-Queensbridge F stations.

From 12:01 a.m. to 5 a.m. Saturday, October 10, Sunday, October 10 and Monday, October 12, Manhattan-bound E trains run express from Roosevelt Avenue to Queens Plaza due to rail repairs.

F
From 11:30 p.m. Friday, October 9 to 5 a.m. Monday, October 12, free shuttle buses replace F trains between Jay Street and Church Avenue due to the Culver Viaduct Reconstruction.

G
From 11:30 p.m. Friday, October 9 to 5 a.m. Monday, October 12, free shuttle buses replace trains between Bergen Street and Church Avenue due to the Culver Viaduct Reconstruction.

From 8:30 p.m. to midnight Friday, October 9, and from 6:30 a.m. to midnight Saturday, October 10 and Sunday, October 11, there are no G trains between Forest Hills-71st Avenue and Court Square due to the 5th Avenue Interlocking Signal System Modernization. Brooklyn-bound G customers may take the R to Queens Plaza and transfer to a shuttle bus connecting to Court Square. Queens-bound G customers may take the R instead.

From 12:01 a.m. to 5 a.m. Saturday, October 10, Sunday, October 11, and Monday, October 12, Manhattan-bound G trains run express from Roosevelt Avenue to Queens Plaza due to rail repairs.

J
From 8 a.m. to 5 p.m., Saturday, October 10 and Sunday, October 11, Manhattan-bound J trains skip Flushing Avenue, Lorimer and Hewes Streets due to rail work at Flushing Avenue and Lorimer Street.

L
From 11:30 p.m. Friday, October 9 to 5 a.m. Monday, October 12, free shuttle buses replace L trains between Lorimer Street and Myrtle-Wyckoff Avenues due to a track chip-out at Jefferson Street station.

N

From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, N trains are rerouted over the Manhattan Bridge between DeKalb Avenue and Canal Street in both directions due to general maintenance.

From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, N trains run local between DeKalb Avenue and 36th Street (Brooklyn) due to general maintenance.

Q
At all times until 2010, the Coney Island-bound Q platforms at Avenue U and Neck Road train stations are closed for rehabilitation. Customers may use the Kings Highway or Sheepshead Bay stations to continue their trips.

At all times beginning September 28, Coney Island-bound Q trains skip Avenue H and Avenue M due to station rehabilitation.

From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, Q trains run local between 57th Street-7th Avenue and Canal Street due to general maintenance.

R
From 12:01 a.m. Saturday, October 10 to 5 a.m. Monday, October 12, there are no R trains between 34th Street-Herald Square and 36th Street (Brooklyn) due to general maintenance. Customers should take the N or 4 instead.