For example I've seen a road being laid between Nairobi and a nearby town since last June. The original road made by the county council only had a few centimetres of tarmac rolled over the bare dirt (the money for the proper materials all went missing). It disintegrated pretty quickly and led to a horrific cratered road that was impassable to all but the hardiest of vehicles - much worse than the original dirt track.
The new road was dug deep, hardcore laid, months of surveying, measuring, marking out, then several layers of different materials laid over the hardcore adding up to a couple of feet of solid road, with a beautifully smooth finish. I'm not qualified to say whether it meets international standards but it's a lot better than what was being built before.
Uh, I would double check that, they've been building bridges, malls and apartments in Eastern Europe and the quality was found to be subpar even by local standards (not to mention EU)...