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More urban expressways for Metro Manila?

I’ve written about expressways before and particularly about where they probably are most suitable and where they shouldn’t be constructed. Here is the article I posted here in 2021: https://d0ctrine.com/2021/05/03/in-defense-of-expressways/

I will not comment anymore about the alignment of the proposed SALEX but here is a “without” and “with” elevated tollway that’s based on a photo of Padre Faura we took while doing a recon around the PGH compound last Friday.

Photo of section of Padre Faura Street fronting U.P. Manila’s Museum of Ideas

AI-assisted image showing the transformation of the section once the proposes SALEX is constructed. The elevated tollway should be higher than the renders you see on social media because there is the Line 1 along Taft Avenue.

Can the trees be saved? Maybe and by saved we don’t mean that they will be transferred. They should be retained where they are.

Why is San Miguel so intent in constructing these tollways? Is it really to “solve” Metro Manila traffic? Most objective, level-headed experts will tell you that the solution involved public and active transportation rather than more tollways. Who is whispering to Ramong Ang’s ears and advising him to build more of these tollways (and bridges)? Your guess is probably as good as mine…

A tollway over Padre Faura?

We had a recon survey of the streets surrounding the UP Manila and UP PGH compound this morning. We walked the entire time and got to see firsthand the conditions along the streets including Pedro Gil and Padre Faura. I’ve seen and read a lot about the proposed SALEX with an alignment that will have the proposed tollway above Padre Faura.

Padre Faura is a 3-lane, one way street.
The stretch of Padre Faura fronting the PGH OPD is lined with ambulances from all over Luzon.

I can’t imagine the blight that the elevated tollways will have on Padre Faura. It will surely affect traffic along the street during construction. There is a lot of AI-generated renders of what it will look like. However, not clearly shown would be the effect of the tollway on a narrow street like Padre Faura. It will be higher than the Line 1 along Taft Avenue though so most renders you see on social media are incorrect in terms of elevation.

Were the establishments along Padre Faura consulted before the alignment of the proposed tollway was submitted for approval? That alone seems to be a glaring flaw in the PPP law considering the location of the tollway. Why is another tollway for construction in the metropolis when what are required are mass transit lines and better public transport?

On C-6 and the proposal for another expressway, Part 2

The recent announcement and launch of the Southeast Metro Manila Expressway (SEMME) included this map showing the (very) rough alignment for the proposed tollway. The map also shows the proposed locations of interchanges including one in Tikling and another in Masinag. There is also another in Tumana. From the looks of this, the SEMME will be a skyway or elevated expressway/tollway.

My first impression is that this elevated tollway will pass through predominantly residential areas with columns rising from private subdivisions. It doesn’t help that the topography also means the columns will be built along hilly or mountainous terrain, thereby making construction more challenging than the elevated tollways in Metro Manila.

 

Do we really need another circumferential road and particularly another tollway? I think that is a very important question that not only needs to be asked but also answered the right way. I, for my part, don’t believe we need another tollway, elevated or not, as this will not solve the so-called traffic problem. In fact, it creates more problems than what is supposed to be solved with the induced traffic this will generate and its promotion of car-centricity. For the price and effort of such an infrastructure, you will get more bang for your buck with a mass transit line or lines. Road congestion can only be solved by constructing the public transport system we needed decades ago.

Another look at the Candaba viaduct’s new lanes

I recently wrote about the new lanes along the Candaba viaduct and my thoughts about them being used as variable lanes (i.e., more lanes assigned along the peak or heavier traffic direction). Only this January 2, I observed that the lanes were being used instead for the southbound traffic as the older southbound viaduct appeared to be closed to traffic. Perhaps that side is up for rehabilitation or maintenance work?

The new lanes between the two viaduct structures are now in use.

These are assigned to southbound traffic while the original lanes appear to be closed off.

New lanes along the NLEX Candaba Viaduct

Heading to Baguio, I noticed the new lanes in the middle of the NLEX viaduct. The viaduct was actually two bridges constructed over the Candaba Swamp. The soil being too soft for a normal road, the viaduct allowed for two way traffic with each bridge carrying northbound or southbound vehicles. The recall that the original bridges each had 2 lanes plus a shoulder lane. Each now have 3 lanes plus shoulder after expansion years ago. The additional lanes in the middle probably required additional columns to be built with more modern foundations than the original viaduct. The new structures had to be integrated with the older viaducts. Here are photos of the completed sections:

You can go to Google Maps if you want to see what the lanes looked like under construction. Here is a screenshot:

Screenshot

The middle lanes look like they can be used as variable lanes. That is, all or some of the lanes may be used to serve the direction with the heavier traffic. The directions can change depending on the time of day, day of the week or the season. I don’t know at this time though how exactly this can or will be implemented as there are no signs to guide motorists for variable lanes. What signs am I referring to? Here are examples from Bangkok showing overhead signs assigning lanes for the direction with heavier traffic:

A close up of the signs designating lanes for traffic

In the example above, 4 lanes including one counterflow lane are assigned to traffic along the southbound direction.

Skyway to the south

Instead of going via C5 and then SLEX en route to Tagaytay last week, we opted to take the Skyway via Quezon Avenue. The travel was smooth between 6:30 AM and 7:30 AM maybe because it was a Thursday and regular classes have not yet resumed (i.e., less trips). Note the counter flow lane adjacent to the median? This is implemented likely due to the experience of heavier traffic along the northbound (Metro Manila-bound) direction during the mornings. I wonder if the reverse is implemented in the afternoons/evenings.

We observed free-flowing traffic for most of our trip along the Skyway upon entering the elevated tollway from Araneta.
I only started taking photos when we were in the Makati area. By the time, we were already approaching NAIA and the NAIA Expressway (NAIAX).
The tollway affords nice views of the cities that is difficult to appreciate when you’re on the ground level. That is much more true when the roads beneath us are blighted by the tollway superstructure.
I think this photo was taken as we passed Gil Puyat Avenue in Makati City
As seen from the previous photos, traffic along the counterflow lane is also relatively light.
Approaching the NAIAX ramp
The ramp connecting the Skyway southbound side to NAIAX is on the right. In front and turning left is the ramp from the northbound side of the Skyway.
Traffic was heavy along both sides of the tollway.
Traffic is relatively light along the southbound direction
Approaching the start of the counterflow lane
The counterflow starts at the Bicutan exit area.

Note that there was more traffic as we traveled between Makati and Muntinlupa. The traffic represented commuters residing in the south and traveling to Metro Manila for work purposes.

PAREX or PARES?

Much has already been written and said about the proposal by San Miguel Corporation (SMC) to build an elevated expressway atop (or along the banks) of the Pasig River. The project is called the Pasig River Expressway or PAREX. Although it has caught the attention of the public quite recently, the idea or concept is something that was already brought up and studies even before SMC took it up. I recall seeing this concept and even discussing about this with a close friend who was involved in modeling the traffic for an elevated highway along the Pasig River during the PNoy administration for the Metro Manila Development Authority (MMDA). The MMDA then was chaired by someone who is now a senator of the country. There was apparently no opposition then for this project that probably was dismissed or shelved as it had no takers at the time. Fast forward to the present and the concept was picked up or somehow fell into SMC. The latter did some work on it, pitched it to government and, one way or another, got it approved. Being a major project under a high profile company pitched to a government that went by its “build, build, build” slogan, it wasn’t so difficult to get this hyped.

Opposition to the PAREX comes from a broad mix of professionals, environmentalists and civil society groups who questioned not just the idea or concept but the process that led to government practically giving the green light for this project. Some have countered that perhaps, instead of PAREX there should be PARES. PARES would be a Pasig River Esplanade, inspired by the Iloilo River Esplanade. Maybe this is a better option. Maybe we could even have a tramline along the river if the ROW permits it. Or, perhaps instead of an elevated expressway (with the BRT and bike lane add-ons that were obviously included to soften the image of the tollway) there can be a elevated monorail along the Pasig River. This can be designed to have a minimal footprint and could certainly have branches such as one along the Marikina River. These two options alone provide alternatives that SMC should at least consider and study very well. The options might give the company a way to save face (literally and figuratively).

On the STAR Tollway, some recent photos

A trip earlier this year allowed me to take a few photos of the STAR Tollway. STAR stands for Southern Tagalog Arterial Road, which was what the expressway was before it became a tollway. I have memories of this being a regular highway in the early 1990s. Then, it was still a two lane road and there were even animals walking around and at times crossing the highway. Later, even after it became an expressway, the ROW was still not secured (i.e., fenced) so motorists would regularly encounter animals creating unsafe situations to both.

Approaching the entrance to the STAR Tollway
Toll plaza at the entry
Speed limits – the maximum speed limit is 100 kph while the minimum speed limit is 60 kph. There is an interesting sign just before the speed limits. It states “No overtaking on impulse”.
Typical overpass for traffic crossing the tollway
Rest stop – there are only Petron stations along either direction of the tollway. San Miguel owns Petron and operates the tollway
A typical curve section
Sight distance requirements are satisfied for straight, level segments like this.
Typical off-ramp from the tollway

Noticeable in the photos are the wide medians. These are typically used for expansion (i.e., additional lanes) when the time comes that the capacity of the tollway is no longer enough to cater to the demand. Both the NLEX and SLEX used to have these wide medians that are now part of the motorway. Are there alternate uses or purposes for this median? Perhaps, and this has been done abroad, one could fit bicycle paths there? Or maybe install solar panels to generate power? Or maybe do both?

In defense of expressways

Expressways have been on the receiving end of criticisms and bad press lately mainly due to the recent much publicized proposal of a Pasig River Expressway (PAREX) by a private corporation. While I also do not agree with the alignment of this proposed tollway, I take exception to the generalization of expressways as sort of a manifestation of evil.

There seem to a lot of information being posted about and vs. expressways. However, it is important to sort through the hype as well as the misinformation that people tend to post about expressways. Yes, there are expressways being demolished or that have been demolished in other countries. These were probably so because they were ill-planned in the first place as are many other elevated pathways (e.g., poorly planned and designed footbridges), and many of the cities removing them have also developed their transport systems to be more efficient in terms of their people’s mobility. That is the case with Seoul and that certainly is the case for Tokyo. In fact, Tokyo had been moving their surface railways underground for the past decades. And now it seems they will be doing so for certain expressways. Does Tokyo have an efficient transport system? It does and perhaps is among the densest if not the most extensive rail and road system in the world.

It is important to have context to the matter. NLEX and SLEX, for example, were developed as relatively free-flowing, high capacity, high-speed roads that were the alternative to the national highways that directly connected many municipalities and cities. The latter had many intersections or junctions with other national roads as well as carry mainly local traffic including public transport such as tricycles and jeepneys. Expressways are built to be part of the primary arterial network and not as local roads. They are built for access rather than mobility.

From L-R: SLEX, Skyway, and the East Service Road. The Skyway connects the NAIA-X to the left and the NLEX connector section onwards through. SLEX eventually becomes the South Super Highway, which is an urban street.

So, are expressways anti-pedestrian? Basically, no. Though they clearly were not developed or constructed with walking in mind. In fact, expressways are generally built along secured right-of-way and are limited access facilities. In the Philippines, all expressways are tolled; meaning you have to pay to use them. Expressways are built more for long distance travel and not for the shorter ones where walking is most appropriate.

Are they car-centric? Not necessarily so because they provide a less congested alternative for long distance transport of people (buses and vans) and goods (trucks). Would you rather take the Manila North Road (McArthur Highway) to Baguio City and endure over 7 hours travel time? Or would you take the 4-hour trip via 3 expressways (NLEX, SCTEX and TPLEX)?

Are expressways supposed to reduce traffic on local roads? Yes and no. Yes, because they actually do reduce traffic at the local level when you divert long distance travel to expressways. The math tells us there is subtraction there. However, it is a no in terms of local traffic increasing over time, which should not be charged to expressways, as they are a function of other elements coming into play including population increase and economic growth. This includes a contribution to induced traffic or new trips generated by the perception of infrastructure being adequate and having the capacity to cater to more trips that are not necessarily borne by cars.

Do we need more expressways? Probably, but not in the locations or alignments like the one proposed for PAREX. Incidentally, there is another expressway being planned that seems to have escaped the attention of those against PAREX. I am talking about the Laguna Lakeshore Expressway that will be a combination of at-grade (over reclaimed land) and elevated (viaduct over the Laguna de Bai) sections leading to heart of Laguna and towards Quezon province. But that’s another story…

On congested tollways during the pandemic

I finally was able to go on a long road trip yesterday as friends invited us to go on an excursion to Quezon to a prominent pottery artist’s place in the town of Tiaong. I first thought we would be going via the backdoor of Rizal since we were already in Antipolo but it turned out that it would be faster via the tollways route. Both Google and Waze recommend our route via C-6, SLEX and STAR to get to our destination. It could have been longer via the Manila East Road but which is a more scenic route. While it took us only 2.5 hours to get to our destination, it took an additional hour on the way back. Part of it was the congestion along the national highway between Tiaong and Sto. Tomas, Batangas but I was also a bit surprised about the congestion along SLEX on the way back (photo below) but saw that this was mainly due to vehicles filing towards the Skyway ramp in Alabang.

There was the expected congestion at the toll plazas as vehicles still need to slow down. It is not like the seamless, structure-less system in Singapore where their sensors can detect vehicles running at high speeds. The toll barriers are still there and the channels for one are relatively narrow. Then, there are travelers that seem hard in understanding that there are specific booths for cash payments. Also, there were occasions when the barriers did not lift immediately for one reason or another. That tends to slow down the processing of queued vehicles – a problem that my undergraduate students could probably take on after their lessons in queuing theory.