An all-weather cast, created in 1999 and referred to as Brachiosaurus Replica by the Chicago Park District,[5] was displayed outside the Field Museum until 2022, when disassembly was required after an inspection revealed there was damage.

The skeleton includes casts of the dinosaur as well as "life-sized model bones based on the closely related Giraffatitan from Tanzania", according to Chicago Park District.

[12] In 2010, Smithsonian magazine's science correspondence Riley Black wrote, "On my way back from Montana, I had a layover in Chicago's O'Hare International Airport, and it was there that I spotted this impressive mount of Brachiosaurus altithorax...

[8] In 2017, Jenny Xie ranked the replica nineteenth in Curbed's list of 27 "cool airport amenities, in order of increasing absurdity".

[5] Vice magazine described the replica as "four stories tall, prodigiously forelimbed, skull-crested king of thundering behemoths, with a ribcage the size of a studio apartment".