INDman Posted July 9, 2010 Share #1 Posted July 9, 2010 These are shots of the new track work going in at 4th Av on the : This is new track with concrete half tie, notice that re-bar is being used here too with rubber coated ties to reduce vibration. This machine hold up the rail after the ties have been attached so the rail can be braced up at the proper height before concrete is poured. New switch points, notice how wood ties are still used for the switch. 4th Av Tower which as of now only controls the holding lights at this location. When work is done, 4th Av interlocking will be controlled from Church Av. Looking north. A section where both the north and south bound express tracks have been finished except for the 3rd rail and signal equipment. Link to comment Share on other sites More sharing options...
MTR Admiralty Posted July 9, 2010 Share #2 Posted July 9, 2010 Nice pics. Are they going to demolish the tower at 4th Avenue? Link to comment Share on other sites More sharing options...
Nova RTS 9147 Posted July 9, 2010 Share #3 Posted July 9, 2010 Why are the express tracks being replaced? It's not like they're going to see service again. Link to comment Share on other sites More sharing options...
SmallParkShuttle Posted July 9, 2010 Share #4 Posted July 9, 2010 Nice pics, was there always a double crossover north of the station on the southbound tracks or was it local to express only? Looks like they're going for flexibility there. Link to comment Share on other sites More sharing options...
R32 3348 Posted July 9, 2010 Share #5 Posted July 9, 2010 Why are the express tracks being replaced? It's not like they're going to see service again. They're going to have to be used when the local tracks have to be replaced. Excellent pics! Thanks for the update. Link to comment Share on other sites More sharing options...
INDman Posted July 9, 2010 Author Share #6 Posted July 9, 2010 Why are the express tracks being replaced? It's not like they're going to see service again. There are plans to use the express tracks during the project and even after all the work is done. Nice pics, was there always a double crossover north of the station on the southbound tracks or was it local to express only? Looks like they're going for flexibility there. South of the station on the south bound tracks, there was a diamond but it was taken out some time in the 60's I think. As you can see, they are putting it back in which is a great idea. Link to comment Share on other sites More sharing options...
YankeesPwnMets Posted July 9, 2010 Share #7 Posted July 9, 2010 Why are the express tracks being replaced? It's not like they're going to see service again. From now to around 2012, the MTA said at least 2 of the 4 tracks will not see regular service. For now, its the express tracks, but when the local tracks are being replaced and trains will run express bypassing 4 Av and Smith 9. Also, the plans to use the express and possibly peak direction express south of Church Link to comment Share on other sites More sharing options...
Amtrak7 Posted July 10, 2010 Share #8 Posted July 10, 2010 Nice shots! Why does the MTA insist on half-ties when they are such a pain to replace, requiring the chip-out of concrete and the pouring of new concrete? They also transmit the vibrations straight to the ground and thus to the platforms, rather than ballast which at least buffers it by a little. Link to comment Share on other sites More sharing options...
yoshi Posted July 10, 2010 Share #9 Posted July 10, 2010 nice shots Link to comment Share on other sites More sharing options...
INDman Posted July 10, 2010 Author Share #10 Posted July 10, 2010 Nice shots! Why does the MTA insist on half-ties when they are such a pain to replace, requiring the chip-out of concrete and the pouring of new concrete? They also transmit the vibrations straight to the ground and thus to the platforms, rather than ballast which at least buffers it by a little. Actually, half ties a la IND style and NYCTA Type IIM (half ties with every 4th tie being a full tie) is one of the better roadbeds. Half ties can be replaced with out doing a whole chip out and a full chip out only needs to be done every 20 or 30 years. Ballasted roadbed (Type I) is good for interlockings but the NTTs don't like it too much. The ballast (when in a tunnel) holds on to the steel dust which gets in the computer equipment on the trains, or so I have been told. Link to comment Share on other sites More sharing options...
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