Upper North Shore sidings

 
  drwaddles In need of a breath mint

Location: Newcastle
On what side is the Warringha Expressway, as I know the Cahill one employs a former tram route Question.
"4001firstdiesel"


The Warringah Freeway (nee Expressway) is the gigantic, 16-lanes-wide freeway north of High Street - you can't miss it. The bridge which carried trams from North Sydney onto the bridge was demolished to provide enough room for the freeway to link into Bradfield Highway.

The Cahill Expressway itself does not sit on top of a former tram route - SHB lanes 7 & 8 do.

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  4001firstdiesel Chief Commissioner

Location: GONE!!!! TIRED OF THE ABUSE AND PERSONAL ATTACKS
The Warringah Freeway (nee Expressway) is the gigantic, 16-lanes-wide freeway north of High Street - you can't miss it. The bridge which carried trams from North Sydney onto the bridge was demolished to provide enough room for the freeway to link into Bradfield Highway.

The Cahill Expressway itself does not sit on top of a former tram route - SHB lanes 7 & 8 do.
"drwaddles"


Righto Exclamation. Thanks Doc Very Happy.

Cheers,
Ben
  michinyon Chief Commissioner

The Warringah Freeway (nee Expressway) is the gigantic, 16-lanes-wide freeway north of High Street - you can't miss it. The bridge which carried trams from North Sydney onto the bridge was demolished to provide enough room for the freeway to link into Bradfield Highway.

The Cahill Expressway itself does not sit on top of a former tram route - SHB lanes 7 & 8 do.


I can't say I agree with this.     The tram bridge crossed the six lanes of highway leading up from the low point between Falcon Street and the Harbour Bridge.    That is,  next to Milsons Point Station,  or 50 metres or so north of it.    Those six lanes have the elevated bridge structures on both sides.   The Milsons Point Station on top on the west side,    and the elevated structure on which the Cahill Expressway toll gates operated until this year,  on the other.   Those two concrete structures are basically original since 1932  and the width between them hasn't changed.

Now it may be the case that the number of lanes at this point was increased from 4 or 5 lanes to six lanes,  by making the lanes narrower.   But the width of the space between those concrete structures hasnt changed.  But there is no reason why that tram bridge would have been removed for the purpose of connecting the Harbour bridge roadway to the Warringah Expressway,   because the tram bridge was not obstructing the 6 lanes at that point,   and the connection between the bridge roadway  and the Warringah Expressway is several hundred metres north of there.

It is also my understanding that the Cahill Expressway is not just the road over the top of Circular Quay Railway station.   The Cahill Expressway starts near High Street North Sydney  and includes the roadway which is lanes 7 and 8 of the Harbour Bridge ( which replaced the tram tracks ),  and then continues over Circular Quay to Wooloomooloo or wherever.   It is my understanding that lanes 1-6 of the bridge are the "Bradfield Highway"   and lanes 7 and 8 are the "Cahill Expressway".

So I think the statement that the Cahill Expressway sits on top of the former tram route,  would appear to be right.

The Cahill Expressway was finished in about 1959.  I don't know if it was all finished at the same time.  Approaching from the north,   the structure forming the ramp which leads up to the Cahill Expressway tollgates was build about that time,    and although the concrete mouldings were made to match the existing pattern,   the slight difference in structure can be seen from Milsons Point Station.

That ramp up to the Cahill Expressway tollgates was built for the Cahill Expressway around 1959   and wasn't later altered for the Warringah Freeway,  except for the approach to it at the northern end,   which is also a visibly different batch of concrete where they didnt bother to match the 1930's decorative pattern.

The Warringah Freeway was not opened until about 1971.

The tram bridge was removed because of the 1959 alteration ( introduction of the Cahill Expressway ),  not the 1971 introduction of the Warringah Expressway.
  drwaddles In need of a breath mint

Location: Newcastle
^ You are wrong, michinyon. What I posted is entirely correct.
  Warks Minister for Railways

Location: Near H30+059
I always thought the old tram lines on the bridge were considered part of the Cahill.  The signs all indicate it from way back before North Sydney.  Granted they may indicate access to the Cahill rather than that being the Cahill itself.

When did lane 7 become a bus lane?
  drwaddles In need of a breath mint

Location: Newcastle
Granted they may indicate access to the Cahill rather than that being the Cahill itself.
"Warks"


That's correct - the entire SHB is Bradfield Highway as per the legal classification.

When did lane 7 become a bus lane?
"Warks"


After the opening of the SHT in 1992.
  michinyon Chief Commissioner

Well Google Maps,  Wikipedia,  Whereis.com,  and photos at the city of sydney website  all show Lanes 7 and 8 on the Bridge as being the Cahill Expressway.   And warks thought so also.   Wikipedia specifically says that the bridge carries 6 lanes of the Bradfield Highway and 2 lanes of the Cahill Expressway.    While that may not be an authoritative source,   I am certainly not the only person who thinks this.

I had a look at the RTA website and could not find their definition.   Where is it ?