Most major construction spending categories increased from July to August but activity was mixed compared to spending levels a year earlier, according to an analysis of new government data by the Associated General Contractors of America. Association officials noted that big drops in public investments mean infrastructure will continue to deteriorate and impede economic growth. 
Construction spending in August totaled $1.218 trillion at a seasonally adjusted annual rate, an increase of 0.5 percent from the July total and up 2.5 percent from a year earlier, Simonson said. He noted that all major categories had gains for the month but private nonresidential and public construction totals were lower than a year ago, while single- and multifamily construction both rose on a year-over-year basis.
Private nonresidential spending grew 0.5 percent in August, after two months of steep declines, but was 2.5 percent below the August 2016 level. The largest private nonresidential segment was power construction (including oil and gas field and pipeline projects), which gained 0.5 percent for the month but dropped 7.4 percent from August 2016 to August 2017. The next-largest segment, commercial (retail, warehouse and farm) construction, rose 0.1 percent for the month and 10.4 percent year-over-year. In contrast, manufacturing construction plunged 4.3 percent for the month and 20.8 percent from a year earlier. Private office construction increased 1.3 percent from July but only 0.2 percent since August 2016.
Public construction spending climbed 0.7 percent from the prior month following large decreases in June and July. But public spending skidded 5.1 percent from August 2016 to August 2017. Highway and street construction declined 1.3 percent for the month and 6.0 percent from a year earlier. Among other major public infrastructure categories, spending on transportation facilities such as transit and airport construction rose 0.8 percent for the month but slipped 0.4 percent year-over-year; spending on sewage and waste disposal plummeted 1.2 percent and 16.1 percent, respectively; and spending on water supply rose 2.6 percent in August but fell 6.4 percent year-over-year. Public educational construction was up 3.5 percent in August but down 2.8 percent over 12 months.
Private residential construction spending increased 0.4 percent between July and August and 11.6 percent over the year. Spending on multifamily residential construction grew 0.9 percent in August and 2.3 percent from a year ago, while single-family was up 0.3 percent for the month and 11.1 percent from the August 2016 rate.