Nonbuilding construction fell 41 percent in December to a seasonally adjusted annual rate of $171.4 billion following an extremely strong November, which saw the start of several large projects. The only category to post a gain in December was environmental public works, which increased 1 percent. Starts of electric utility/gas plants fell 76%, while highway and bridge starts fell 18% and miscellaneous nonbuilding starts dropped 17% from November to December.
The largest nonbuilding construction project to break ground in December was the $900 million Sagamore Wind Farm project in Roosevelt County, New Mexico. Also starting in December was the $400 million Deuel Harvest Wind Farm in Clear Lake, South Dakota, and a $400 million extension of US 401 to I-40 in Raleigh NC.
For the full year of 2019, nonbuilding construction rose 7 percent thanks to a 112 percent gain in the electric utility/gas plant category. When removing that category from total nonbuilding, starts were down 8% for the year. Environmental public works gained 4% in 2019, while miscellaneous nonbuilding fell 19%. Highway and bridge starts were down 8% for the year.
Nonresidential building dropped 20 percent from November to December to a seasonally adjusted annual rate of $289.5 billion. The main reason for the decline in December was a 93 percent decline in manufacturing after a large petrochemical plant broke ground in November. Institutional starts rose 6 percent over the month fueled by gains in healthcare and recreation. Commercial starts rose 5 percent in December due to solid gains in warehouses and parking structures. The largest nonresidential building project to break ground in December was the $712 million National Geospatial Agency Headquarters in Saint Louis, Missouri. Also breaking ground in December was a $570 million medical center renovation in Bethesda, Maryland, and a $400 million consolidated rental car facility at Newark International Airport.