It's always the same answer from people when I talk about the size of BD roads and infrastructure.
The congestion is the problem. Making roads and infrastructure wider is the solution. There IS enough land. Singapore by density is higher than BD but their roads are wide and buildings are large. When we make a bridge, even that is only two lanes per direction. When at minimum a road must have 3 lanes, and each lane must be at least 10 ft to 12 ft wide. I don't think we even have rules for what constitutes a lane.
What is preventing that bridge from being wider when there is nothing but empty space around it? If there is an accident or build up on a 2-lane bridge, that stops the entire bridge. But if it has 3-4 lanes, then you can just drive past the obstructed part. Our urban planners have absolutely no design sense.
If you look at a satellite map, there is nothing but empty land and fields. Humans live in congestion. There is nothing preventing us from bigger roads, or building a completely new city from scratch with proper ordinance laws. Even the new neighborhoods they're building on Dhaka's outskirts are with narrow roads. This city will be unlivable in 20 years. This country will be unlivable in 100 years.
When you build a narrow highway, it immediately brings shops and buildings on the side of the road. Thereby preventing it from ever expanding. Which is why when you build it the first time, it needs to be as wide as possible.
If we built wider roads and buildings, there will be significant alleviation of poverty, and in turn actually reduce population growth naturally. The US highway system is a major part of its prowess. If we have less traffic jams, it would open up far more business opportunities than you can imagine. Currently, we can't even facilitate an Amazon type company because going from one location to another takes hours when it should take 15 minutes when there's no traffic.