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The Barkadahan Bridge situation

The Barkadahan Bridge is currently undergoing rehabilitation. To be accurate, the old bridge is being rehabilitated and upgraded/retrofitted to be able to carry the traffic projected to use it being a vital link between the Province of Rizal and Metro Manila via Pasig and the C-6 corridor. The bridge is named after the “friendship” established among Rizal municipalities and Pasig City for an area that has been subject of a territorial dispute among them. These are the municipalities of Cainta and Taytay (Rizal Province) and the city of Pasig. The bridge spans the Manggahan Floodway, much of which is in Pasig City.

To increase the capacity for this crossing, which is the most direct route to C-6 and popular among many headed to Taguig/BGC and Makati, a new bridge had been constructed to the south of the old one. The older one had 2 traffic lanes and was no longer sufficient for the volume of vehicles crossing it after the expansion of C-6 resulting to it steadily gaining more users over the years. Use of this route cut down travel times between Rizal and BGC and Makati by at least 30 minutes based on our experiences using the route.

Late last year as far as I could recall, the new bridge opened and immediately increased capacity but then congestion quickly set-in due to two factors: the traffic management at the intersection with the East Bank Road and the constrained (two-lane, two-way) leg of Highway 2000. Add to this the lack of discipline by local traffic in the form of tricycles and motorcycles counter-flowing in the area.

Earlier this year, signs were posted around Rizal about the then impending project for the rehabilitation of the old bridge. The signs advised for most travellers to avoid using the Barkadahan Bridge due to the congestion in the area because of the project. It turns out that what was thought by most as a project retrofitting the old bridge alone was actually a bigger one involving increasing the capacity of the Highway 2000 leg of the intersection with the East Bank Road. Following is a photo posted at the official Facebook page of the Rizal Provincial Government showing the demolition of buildings and other structures along the Highway 2000 leg. The photos were taken from the new Barkadahan Bridge approaching the intersection, the southbound direction of the East Bank Road, and from the westbound side of Highway 2000.

Demolition and clearing of ROW for the expansion of Highway 2000 in relation to Barkadahan Bridge [Photo collage from the Lalawigan ng Rizal Facebook page]

From the photos above, it is clear that at least 2 lanes will be added to Highway 2000 and that this leg will soon be well-aligned with the Barkadahan Bridge, which will also have a total of 4 lanes. Hopefully, this project will be completed soon and within the year (before December?) in order to alleviate the commuting woes of Rizalenos working in the BGC and Makati CBD areas. Of course, that goes without saying that there is also a need to optimise the traffic signals at the intersection and to strictly enforce traffic rules and regulations vs. erring motorists in the area.

Traffic management schemes for the Marcos Highway bridge rehab

The rehabilitation of the Marcos Highway Bridge in Marikina has necessitated traffic management schemes at the bridge itself and along alternative routes to alleviate congestion in the area. These are collectively called traffic or transport systems management (TSM) schemes with the objective of optimising existing infrastructure and resources without necessarily building something entirely new. These are quite different from travel demand management (TDM) schemes that include number coding and truck ban policies that are already being implemented (though Marikina does not implement the number coding scheme).

Traffic build-up at the approach to the intersection with FVR Road (To Riverbanks). This is now a signalised intersection as traffic from Blue Ridge/White Plains is now allowed to cross to FVR Road.

Using the route via FVR Road (Riverbanks) means you don’t have to cross the Marcos Highway Bridge and travellers will merge with those who crossed the bridge just before the Line 2 Santolan Station.

In the mornings, one lane each is allocated for either the eastbound or westbound traffic. That’s practically a total of 3 lanes (+2 lanes westbound for the SM Marikina Bridge) for the westbound direction and a single lane for the eastbound side. This is logical given the directional distribution of traffic at this time of day and the alternative routes already available to travellers.

 

Here are a few photos taken on a night time drive. Note that this was taken by a passenger. Don’t even try doing this (taking photos) while driving a vehicle, and especially not while on a motorcycle.

Entrance to the bridge right after Maj. Dizon – this part is not affected by the rehab works but vehicles position themselves to shift towards the left side, which is the usable part of the bridge.

Both lanes of the westbound side of the bridge are used for eastbound traffic. Westbound traffic are all along the SM Marikina bridge for a total of 2 lanes each for either direction of flow. The cones are not removed for practicality since they would have to be installed for the morning when one lane is allocated for the westbound traffic.

Vehicles shift to the right to return to the correct lanes for eastbound traffic along Marcos Highway at the Santolan area. Note the westbound vehicles shifting towards the underpass and SM Marikina on the left.

On the impacts of the closure of the Marcos Highway Bridge

The Marcos Highway Bridge was scheduled for rehabilitation in the next four months starting last week. While it will not be totally closed to traffic, the scheme reducing its capacity will surely lead to congestion along Marcos Highway. This congestion should be expected along other roads as well, as travellers, particularly those taking private transport will be using alternative routes in order to avoid this area. Those coming from the east will likely go through Marikina City via the parallel route comprised of Sumulong Highway and A. Bonifacio Avenue. Others will turn to A. Rodriguez (Ligaya). And perhaps others may go via Ortigas Avenue Extension. These alternative routes correspond to the other bridges crossing the Marikina River connecting the Rizal province and part of Marikina and Pasig to Metro Manila.

A photo of the bridge prior to its partial closure

I will write more on this topic once I get more information on what’s happening to the traffic in the area. Meanwhile, I do know that my usual alternative route via Marikina and Tumana seems to have more than the usual traffic during my commute. While it is easy to attribute this to the partial closure of the Marcos Highway bridge, this could also be just a normal variation in the typical daily traffic for that route.

On phantom traffic jams again

I’m sharing this article on phantom traffic jams:

Seibold, B. (2019) Traffic Ghost Hunting: When the biggest problem with traffic is nothing at all, Nautilus, https://medium.com/@NautilusMag/traffic-ghost-hunting-ac071197695d [Last accessed: 4/9/2019]

Have you wondered why the road or path is congested only to find out there seems to be nothing causing it? This is the phantom or ghost traffic jams caused by simple behaviours of travellers whether on motor vehicles, cycles or people like slowing down their movement or changing lanes. These disruptions cause a “ripple effect” on the traffic stream much as like waves are generated by a stimulus on calm waters.

On the traffic flow predicament at Tikling junction…again

During weekends, a constant frustration have been the incidence of severe traffic congestion along Ortigas Avenue Extension. Weekday evenings are usually better in terms of traffic compared to Saturdays. But last Monday, the congestion was so severe the congestion reached Valley Golf and vehicles had to crawl to Tikling. As mentioned in previous posts on this subject, part of the problem is the sheer volume of vehicles that make the roundabout set-up inappropriate for the junction. Then there is also the issue about the people who are supposed to manage traffic but end up mismanaging it. From what I usually observe, they tend to favour vehicles coming from Taytay via the Manila East Road leg and seem oblivious to the build-up of traffic along Ortigas Ave. Ext. eastbound.

Typical heavy traffic at Tikling Junction

We might finally get a chance to have a solution for this. One of our students took on a topic that will require her to asses the traffic at the intersection to determine, for example, whether the roundabout is suitable or perhaps should be changed into a signalised traffic control. Both analytical approach and microsimulation (using Vissim or the homegrown LocalSim) will be employed. But we will have to wait by May to see some substantial results.

On the efficiency of transportation – a crash course on transportation engineering concepts

There is an excellent article on the efficiency of transportation systems:

Gleave, J. (2019) Space/Time and Transport Planning, Transport Futures, https://transportfutures.co/space-time-and-transport-planning-1aae891194e5 [Last accessed: February 25, 2019].

It is highly recommended not just for academics (including students) but also for anyone interested in transportation and traffic. It’s like a crash course in transportation engineering with a lot of basic concepts in traffic engineering and traffic flow theory being presented for easy understanding by anyone. Enjoy!

On the unpredictability of EDSA traffic

Much has been written about the traffic along EDSA, which is perhaps Metro Manila’s most famous (some would say infamous) thoroughfare. These include the unpredictability of congestion along this road. While it is hard to believe that traffic congestion is unpredictable for EDSA because very often it is congested, there are times when you just marvel that its free-flowing during the day or shocked that its packed with cars close to midnight. Last week, we experienced both predictability and unpredictability in the sense that we did expect EDSA to be congested near Ortigas (due to the dismissals of schools in the vicinity) but didn’t expect it to be packed during what we thought was “alanganin na oras” that was around 3PM.

 

EDSA northbound traffic taken at Guadalupe last October 1, 2018 at 3:30PM.

Interestingly, there was no congestion after Ortigas Avenue and we quickly made up for the time lost in the congestion we experienced from Gil Puyat Avenue. Is this another case of the phantom congestion where the simple disturbances in the traffic stream can create a ripple effect resulting in congestion? Or is this somewhat like an everyday thing? EDSA is not part of my daily commute so I am not so sure about the regularity of this situation but at least the weather didn’t factor in the equation. Heavy rains usually lead to flash floods along this thoroughfare, and these floods will definitely lead intense congestion.