Posted: Tue Dec 20, 2005 6:14 pm
I believe that South Rd should not be upgraded as it the cost of upgrading the road alone would be a lot of money, not to mention the chaos it would cause to divert all the peak hour traffic through suburban side streets because there simply isnt enough room to accomodate traffic flow during construction work, and people are not going to want to put up and wait 4 years of chaos.
The simplest alternative I can think of at the moment is to extend the Southern Expressway North through that park/police station, onto the Tonsley rail line (Remove the rail line) I understand that the land the tracks are on would only accomodate for 3 lanes of traffic, given that you allow room for the concrete pylons of the elevated road above to be constructed, so I suggest a ground level road for southbound traffic, and an elevated road on concrete pylons above the ground level road for all northbound traffic. As you approach the end of of the Tonsley Line where it connects back to the City-Noarlunga line, there is a problem. The line still only allows for 3 lanes plus concrete pylons, this would mean that about 10 properties on the eastern side of the line would need to be subdivided to make way for the 3 lanes of the elevated road traffic to resume to ground level and then the two 3-lane roads can then go underground into a tunnel just near the Ascot Park Railway Station. This tunnel, which is about 3.7km in length would run from the A.P Railway Station, directly under Marion Road to the former Glenelg Tram Line that is on the Northern side of Anzac Highway. It would exit near Marion Road, and run in the direction of the City along the former tram line green strip. The strip is wide enough to accomodate for about 4 lanes of traffic either way, but that is without a 1m green median strip to separate the two. So I would suggest to continue having the 3 lanes either way along the Strip. Next Stop - South Rd/City West. Several properties surrounding this area would need to be demoilished to make way for an interchange. Continue the 3 lanes of traffic along the City West and build an underpass with slip lanes onto Burbridge Rd, but continuing along the James Congdon Drive Corridor. This corridor is again wide enough to accomodate 3 lanes each way still. The road should then travel adjacent the train tracks, but just before Port Rd, another tunnel is constructed under the parklands and that exits just where Torrens Rd begins near the train tracks. This tunnel is about 2.65KM long. There are 12 properties that obsruct the path of the exit, these homes would need to be demolished so the road can exit out of the tunnel and onto a elevated road above the Islington Line train tracks. The reason for this is because that line is a frieght line, and the freight lines need to be kept in place. Back on the road topic, 3 lanes each way on concrete pylons above the train tracks until the Islington Railyards where the road would divert off onto ground level adjacent to the train tracks on the western side of the railyards where a carpark is. It then heads straight up North, under Grand Junction Rd (another major interchange needed here) and continues straight up. 1 industrial property needs to be removed to make way for the freeway to proceed and then it connects with the Salisbury Highway/ Port River Expressway via a T-intersection interchange.
There you have it. Our North-South Freeway.
Rough briefings -
# 20-30km of freeway.
# 2 tunnels, 3.7KM & 2.65KM respectively.
# 2 major interchanges
# 7 minor interchanges
# No City Parklands destroyed
# 2 Elevated sections
# 23 Properties destroyed
# Tonsley Rail Line demolished
# 3-lanes EACH WAY.
# X Million dollars to build
# Frieght line preserved
and thats all really. opinions?
The simplest alternative I can think of at the moment is to extend the Southern Expressway North through that park/police station, onto the Tonsley rail line (Remove the rail line) I understand that the land the tracks are on would only accomodate for 3 lanes of traffic, given that you allow room for the concrete pylons of the elevated road above to be constructed, so I suggest a ground level road for southbound traffic, and an elevated road on concrete pylons above the ground level road for all northbound traffic. As you approach the end of of the Tonsley Line where it connects back to the City-Noarlunga line, there is a problem. The line still only allows for 3 lanes plus concrete pylons, this would mean that about 10 properties on the eastern side of the line would need to be subdivided to make way for the 3 lanes of the elevated road traffic to resume to ground level and then the two 3-lane roads can then go underground into a tunnel just near the Ascot Park Railway Station. This tunnel, which is about 3.7km in length would run from the A.P Railway Station, directly under Marion Road to the former Glenelg Tram Line that is on the Northern side of Anzac Highway. It would exit near Marion Road, and run in the direction of the City along the former tram line green strip. The strip is wide enough to accomodate for about 4 lanes of traffic either way, but that is without a 1m green median strip to separate the two. So I would suggest to continue having the 3 lanes either way along the Strip. Next Stop - South Rd/City West. Several properties surrounding this area would need to be demoilished to make way for an interchange. Continue the 3 lanes of traffic along the City West and build an underpass with slip lanes onto Burbridge Rd, but continuing along the James Congdon Drive Corridor. This corridor is again wide enough to accomodate 3 lanes each way still. The road should then travel adjacent the train tracks, but just before Port Rd, another tunnel is constructed under the parklands and that exits just where Torrens Rd begins near the train tracks. This tunnel is about 2.65KM long. There are 12 properties that obsruct the path of the exit, these homes would need to be demolished so the road can exit out of the tunnel and onto a elevated road above the Islington Line train tracks. The reason for this is because that line is a frieght line, and the freight lines need to be kept in place. Back on the road topic, 3 lanes each way on concrete pylons above the train tracks until the Islington Railyards where the road would divert off onto ground level adjacent to the train tracks on the western side of the railyards where a carpark is. It then heads straight up North, under Grand Junction Rd (another major interchange needed here) and continues straight up. 1 industrial property needs to be removed to make way for the freeway to proceed and then it connects with the Salisbury Highway/ Port River Expressway via a T-intersection interchange.
There you have it. Our North-South Freeway.
Rough briefings -
# 20-30km of freeway.
# 2 tunnels, 3.7KM & 2.65KM respectively.
# 2 major interchanges
# 7 minor interchanges
# No City Parklands destroyed
# 2 Elevated sections
# 23 Properties destroyed
# Tonsley Rail Line demolished
# 3-lanes EACH WAY.
# X Million dollars to build
# Frieght line preserved
and thats all really. opinions?