The United States economy grew at an annualized rate of 3.9% last quarter according to the Bureau of Economic Analysis. While the mortgage crisis is continuing to worry the general public, construction contractors are not in a panic mode. The construction economy won't slow, but it will change in its allocation of work. Meaning less residential and more commercial, industrial and infrastructure.
As the economy continues to rock along, demand for construction and demolition services will be steady. It has to serve this economic growth with new facilities and transportation projects to get to those facilities.
The numbers and the resulting demand don't add up to anything else.