The heavy rains the past days have taken a toll on many roads. Special mention here would be city roads such as main arterials where traffic flow is affected by the pavement conditions. Here are a couple of photos of potholes along Katipunan Avenue.

The photos also reveal that cement concrete slabs are actually under the asphalt concrete. This means asphalt concrete was used more as an overlay to protect the cement concrete slab rather than as the main structural component that will carry the traffic loads. The pavement slabs may not necessarily be compromised but the hammering action of tires/wheels as they hit the potholes will definitely lead to more damage. The water, of course, is worrisome because once they seep or penetrate the cracks and interfaces between the slabs, they may compromise the layers beneath the slab. This will weaken the foundation of the pavement and lead to more critical damage. The challenge is how to repair these potholes when we are still experiencing heavy rains. Now that’s something the DPWH needs to figure out, learn and apply rather than the usual patch up work that results in mounds of asphalt replacing the potholes.

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