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Reservoir roads – Part 2

Previously, I posted about the reservoir roads we crossed when we traveled to Baler, Aurora last April 2019. It’s been a while since that post so before I forget, here are more photos of those reservoir roads taken during our return trip from Baler.

The two lane highway becomes a single lane section at the Diayo River Reservoir road

A view of the fish pens at the Diayo River reservoir

Pristine waters with the Sierra Madre mountain range in the background

Approaching the end of the Diayo reservoir road

There is a checkpoint at the 2-lane section bridging the Diayo reservoir road with the Canili River reservoir road

Vehicles entering the Canili reservoir road – this again is a one-lane, one-way section where vehicles from either direction would have to give way to either.

Shoulder and fish pens 

Waters of the Canili River Reservoir with the Sierra Madre mountains in the background

Fishermen on a banca – they looked like they were inspecting their fish pens

 

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.

Reservoir roads – Part 1

I remember posting about “submersible bridges”, dike roads and the like. There were two roads atop 2 dams that were part of 2 reservoirs in : the Canili River Reservoir and the Diayo River Reservoir, which are dwarfed by the much larger Pantabangan reservoir and dam nearby. These two reservoirs are at the border of Nueva Vizcaya (Alfonso Castaneda) and Isabela (Maria Aurora), which also happens to be the border of Regions 2 and 3 (Cagayan Valley and Central Luzon, respectively). Here are photos of the roads atop the dams that are part of the Pantabangan-Baler Road.

Vehicles may only pass a single lane with shoulders on either side of the lane. And so there are people posted at either ends of the sections to manage the one-way traffic.

The reservoir is visible on the left side of the photo

Forested area and ravine on the right side

Some fish pens on the Canili reservoir side

A view of the east end of the Canili reservoir road where westbound vehicles await their turn to traverse the section.

The eastern end of the Canili reservoir road

There’s a short two-lane segment between the Canili and Diayo reservoir roads

Traveling along the Diayo reservoir road

Fish pens at the Diayo Reservoir

The other side of the dam

The eastern end on the Diayo reservoir road where the single lane road transitions into a 2-lane road.

More photos in Part 2…soon.

Railway bridges along the PNR Main Line South

This is a continuation of the series of posts about my recent trip to Bicol where I was able to take some photos for items I generally label. These stock of photos are posted here for several reasons including convenience of access in case I need them for lectures or other presentations. Previously, I had posted on vertical curves along the Andaya Highway. This time around are some photos I took of railway bridges along the PNR’s Main Line South and particularly in Camarines Sur. It was quite challenging to look for or anticipate seeing these structures; many of which are quite old and in a state needing urgent maintenance. Most if not all are steel truss bridges and the ones in better conditions are shown in the following photos. All were taken within the Naga City boundaries.

On the Tandang Sora flyover’s closure

The signs announcing the closure of the Tandang Sora flyover along Commonwealth Avenue are doing the rounds of social media. So are the traffic management plans (i.e., the re-routing maps for the area) that are being shared by many and soliciting a variety of reactions. The reactions are often angry or sad for those likely affected by the closure and the re-routing via Luzon Avenue, Congressional Avenue and Philcoa. The demolition of the flyover to give way to the future MRT-7 station will definitely lead to traffic congestion and longer travel times to a lot of commuters, whether using public or private transportation. However, there are only few comments so far about the impacts on pedestrians. Will the pedestrian footbridges be demolished, too? Will they be redesigned or replaced considering the high volume of pedestrians crossing this major intersection? Following are photos taken underneath the Tandang Sora flyover as we waited to make a U-turn. These show the pedestrian footbridges in the area that allow people to safely cross the wide Commonwealth Avenue.

View of the steel truss footbridge that goes underneath the Tandang Sora flyover

There are many signs installed on the footbridge including the speed limit for Commonwealth Avenue and a reminder to fasten seatbelts. Others are directional signs including those designating the lanes for public utility vehicles and motorcycles.

There is another steel footbridge that is of more recent design and construction connecting to the old truss bridge. This allows pedestrians to continue on to cross Tandang Sora. This example is actually one that invites questions pertaining to design. Why have two distinct designs instead of building on the previous one? Another case of “pwede na iyan” ?

Here’s another view of the two footbridges – one spanning Commonwealth and the other across Tandang Sora. Will these be demolished, too, to give way to the MRT-7 station? And will the MRT-7 Station design include a provision for non-passengers to cross Commonwealth and Tandang Sora? This seems to be the most logical way to design the station; integrating pedestrian (and cycling) needs to the infrastructure. But then again, that remains to be seen and perhaps someone can share the design of the Tandang Sora station for this to be scrutinized.

A bridge too far

I’m currently in the Netherlands and after fulfilling my responsibilities here, I decided to go on a trip to Arnhem. Arnhem was the site of one of the more memorable events during World War 2 when the British 1st Airborne attempted to take the Arnhem Bridge as part of Operation Market Garden. The drama that unfolded is told in the movie “A Bridge Too Far” where Arnhem was the titular bridge that was to be taken and held by the British. However, only Lt. Col. John Frost’s 2nd Parachute Battalion made it to the bridge and had to defend it against a superior German force.

My first look at the historic bridge over a river branch of the Rhine

A view of the bridge from the platform in front of “Airborne at the Bridge” 

Airborne at the Bridge is kind of a museum with video retellings of the events pertaining to the bridge. It includes material of Operation Market Garden, which was a massive land and air operation that was supposed to lead to an end of the war in Europe before Christmas 1944. They also have a shop selling literature about Market Garden and the events of the bridge as well as souvenirs.

A memorial to Jacob Groenewoud who helped gather intelligence for the allies during the operations to take the bridge. He gave his life to this cause, falling after being shot by a German sniper.

Airborne Memorial – an old artillery piece is set-up as if targeting the bridge. This was the side the British held until defeated by the Germans after what was a costly battle. The British lacked supplies as ground forces that were to relieve them were delayed at other bridges before Arnhem.

A view from under the bridge

A view of the bridge from the end that was held by the British. There are now bicycle and pedestrian lanes on either side of the bridge, which is now called the John Frost Bridge.

There is a plaque and memorial on the bridge retelling what transpired there in September 1944.

Liberation route marker near the bridge

I had thought about going to Arnhem during this trip in The Netherlands. I am a military history buff and would have regretted it much if I wasn’t able to go to this site of one of the more dramatic events during World War 2. I picked up a few souvenirs at the memorial shop and will remember this experience quite fondly.