Monthly data, seasonally adjusted annual rate (millions of dollars)
NOTES: Expenditure refers to the value of work done on construction projects underway during a given period time, regardless of when work on each individual project was started or when payment was made to the contractors. Runways include airport pavement and lighting. Passenger terminals include air passenger terminals. Other categories such as air freight terminals, air traffic towers, hangars, and other related facilities and structures are included for the air transportation total, but are not included in the monthly state and local estimates.
Seasonally adjusted annual rate for an individual month is an estimate of what the annual total would be if non-seasonal conditions were the same all year.
SOURCE: U.S. Department of Commerce, U.S. Census Bureau, Construction Spending, State and local construction, available at http://www.census.gov/const/www/c30index.html as of December 2010.