Monthly data, seasonally adjusted annual rate (millions of dollars)
| Total | Air transportation | Land transportationa | Water transportation | |
|---|---|---|---|---|
| January 2008 | 22,350 | 11,648 | 9,083 | 1,619 |
| February 2008 | 23,637 | 12,979 | 9,031 | 1,627 |
| March 2008 | 23,019 | 11,014 | 10,200 | 1,806 |
| April 2008 | 22,426 | 11,144 | 9,453 | 1,830 |
| May 2008 | 22,663 | 11,380 | 9,973 | 1,310 |
| June 2008 | 23,620 | 11,900 | 9,920 | 1,800 |
| July 2008 | 23,467 | 11,563 | 10,484 | 1,420 |
| August 2008 | 23,648 | 11,769 | 10,090 | 1,789 |
| September 2008 | 23,437 | 11,414 | 10,212 | 1,811 |
| October 2008 | 24,083 | 11,362 | 10,601 | 2,119 |
| November 2008 | 23,505 | 12,261 | 9,745 | 1,499 |
| December 2008 | 23,124 | 11,254 | 10,316 | 1,554 |
| January 2009 | 22,927 | 10,923 | 10,455 | 1,549 |
| February 2009 | 25,315 | 10,572 | 13,077 | 1,667 |
| March 2009 | 23,281 | 11,584 | 10,331 | 1,366 |
| April 2009 | 24,361 | 11,824 | 11,022 | 1,514 |
| May 2009 | 25,995 | 13,134 | 11,362 | 1,499 |
| June 2009 | 26,639 | 13,453 | 11,336 | 1,850 |
| July 2009 | 29,277 | 14,291 | 13,180 | 1,806 |
| August 2009 | 30,246 | 15,940 | 12,449 | 1,858 |
| September 2009 | 30,066 | 15,554 | 12,900 | 1,612 |
| October 2009 | 28,500 | 13,420 | 13,186 | 1,894 |
| November 2009 | 27,938 | 12,241 | 13,828 | 1,870 |
| December 2009 | 28,157 | 12,904 | 13,508 | 1,745 |
| January 2010 | 26,778 | 13,482 | 12,023 | 1,272 |
| February 2010 | 28,905 | 14,174 | 13,207 | 1,524 |
| March 2010 | 32,205 | 15,776 | 14,478 | 1,951 |
a Land transportation construction is primarily related to mass transit systems.
NOTES: Expenditure refers to the value of work done on construction projects underway during a given period of time, regardless of when work on each individual project was started or when payment was made to the contractors. Public expenditures on transportation construction are a measure of growth in system capacity. Construction includes new buildings, infrastructure, renovations, site preparation, and other materials and structures involved in construction. Maintenance of existing facilities and structures is not included. Construction expenditures on completely new routes and terminals are direct additions to system capacity. Construction expenditures (including renovations, expansions, conversions, etc.) on existing transportation infrastructure may improve maintenance and system management, safety, and other attributes that increase capacity.
Details may not add to totals due to rounding.
SOURCE: U.S. Department of Commerce, U.S. Census Bureau, Construction Spending, available at http://www.census.gov/const/www/c30index.html as of July 2010.