I have no actual information, but driving in NH - MA - FL for a long time. It has been my impression that NH has more stringent standards than MA for Major Highway construction. Deeper roadbeds, better stratification of stone and gravel, and perhaps thicker pavement. They also tend to have constant radius curves, especially on ramps, where MA tends toward decreasing radius curves. FL is different because most of the state is without frost or freezing which breaks down the road surface, and many of the highways are newer and flat. No snow, no salt, just heat.
stillfeel t1_jacq6c7 wrote
Reply to Study: New Hampshire roads are best bang for the buck by mmirate
I have no actual information, but driving in NH - MA - FL for a long time. It has been my impression that NH has more stringent standards than MA for Major Highway construction. Deeper roadbeds, better stratification of stone and gravel, and perhaps thicker pavement. They also tend to have constant radius curves, especially on ramps, where MA tends toward decreasing radius curves. FL is different because most of the state is without frost or freezing which breaks down the road surface, and many of the highways are newer and flat. No snow, no salt, just heat.