The biggest jump in costs around here is for aggregate. The stream gravel or crushed rock used for concrete, asphalt paving, and trail/road base. The main and inexpensive source was from a river that also carried spawning "endangered" fish. Scratch that source. Now we use rock from 6 local quarries, several regional quarries, and some rock shipped over 1,000 miles from Canada. And, people around most of the quarries are fighting the increased truck traffic.