Partner, Parsons Brinckerhoff Engineering and Construction, New York, NY, 1906- ; in 10/2009, the British engineering and construction giant, Balfour Beatty Group, bought Parsons Brinckerhoff (PB) and made it one of its six divisions. PB had a number of branch offices in the US in 2011, on the West Coast in Seattle, WA (2), Portland, OR (2), San Francisco, CA, Oakland, CA, Antioch, CA, Sacramento, CA, Los Angeles, CA, (2), Long Beach, CA, Orange, CA, San Bernardino, CA, and San Diego, CA. The firm was founded by William Barclay Parsons, Jr., in New York, NY, in 1885.

Henry Brinckerhoff, Jr., lived in an apartment at 147 Ashland Avenue in Chicago, IL, in 1900 with his brother, Frank (born 07/1870 in NY), an electrical engineer. According to the US Census of 1910, Henry Brinckerhoff lived in Elizabeth, NJ, at 224 West Jersey Boulevard. with his wife, Florence, their son and two servants. In 1920, He lived at 32 Sherwood Place, Englewood, NJ, with his wife, two sons, nephew (or step-son) and two servants. Ten years later, he lived at 156 Sherwood Place in Englewood with his wife, one son and his nephew or step-son along with three servants. Their residence had an estimated value of $50,000, underscoring his significant wealth.

His father, Henry M. Brinckerhoff, Sr., served in the US Army from 1866-1872.

He married Florence L. Brinckerhoff (born c. 1880 in Chicago, IL) c. 1903.

Two sons: Henry M. Brinckerhoff, III., (born c. 1905 in Chicago, IL), Remsen (born c. 1912 in NJ) and a step-son (or nephew), Nelson (born c. 1910 in Boston, MA).