Major roads and highways are either paved with concrete or asphalt. But in Misamis Oriental and many areas in the country, it’s always a mix of both – two inner lanes are asphalted and the outer lanes are made of concrete.
Take this instance of the National Highway in El Salvador City. You can clearly observe the asphalt (dark colored) and the lighter colored concrete portion. This may seem very common in our setting as asphalt overlay projects are undertaken almost everywhere in major highways. Asphalt is a cheap quick repair action. Unfortunately, like in this case, asphalt overlay covers only 2 lanes for a 4-6 lane highway (perhaps due to budget constraints). Even a foreigner first time visitor noticed the unique asphalt-concrete mix…
And there’s also a safety concern with this road condition as asphalt overlay tend to be thicker for about an inch or more making it hazardous for motorcycle and bicycle riders when speeding and changing lanes.
Although asphalt is cheaper and provides comfort for motorists, it is prone to potholes especially during heavy rains. Meanwhile, concrete lasts longer but is costly. So, road designers will have to choose either as both concrete and asphalt has its own pros and cons….