The Hudson, at 750 North Hudson Avenue, topped out last week.

Onni Group, the developer and general contractor building The Hudson in River North, hit a milestone last week with the topping out of the 25-story apartment tower. The fine folks at Pappageorge Haymes Partners, the Chicago firm that designed the Hudson, tell me topping out was achieved on Thursday of last week.

When it’s done, The Hudson will have 240 one-, two-, and three-bedroom rental units and 240 parking spots (that’s a one-to-one ratio, for the math-impaired), with 10,000 square feet of retail space at ground level.