TROY, N.Y. — The Rosenblum Companies has broken ground at 501 Broadway in Troy for the development of a $23 million mixed-use loft apartment project. The historically sensitive renovation of the former Troy Record newspaper building and the construction of a complementary new addition will bring 101 new apartments and ground-floor retail space to downtown Troy. Construction is slated to take 18 months. Redmark Realty is handling the leasing of the retail space.