To elaborate on why this doesn't bridge the gap between heavy trucking road wear and all other traffic, road wear primarily comes down to environmental causes and impact loading. Wear from impact loading scales with IIRC roughly the 4th power of axle weight. The ruts you see in asphalt aren't from wearing through the surface, it's from slowly deforming it due to cyclic loading slowly shifting the subsurface and road surface on top. That basically doesn't happen with any vehicle that doesn't require a CDL.
As a counterpoint the environmental wear is basically inevitable and in colder climates that's going to dominate the road work schedule anyways so it doesn't matter as much. Even with freeze thaw wrecking the road heavy loads still shorten the life of the road surface.
Any way you slice it though, the current taxes and fees that heavy trucks pay do not come close to covering the share of maintenance work they're responsible for. Gas taxes effectively subsidize the trucking industry.
As a counterpoint the environmental wear is basically inevitable and in colder climates that's going to dominate the road work schedule anyways so it doesn't matter as much. Even with freeze thaw wrecking the road heavy loads still shorten the life of the road surface.
Any way you slice it though, the current taxes and fees that heavy trucks pay do not come close to covering the share of maintenance work they're responsible for. Gas taxes effectively subsidize the trucking industry.