EuroGraphics Chicago Michigan Avenue 1000-Piece Puzzle. Box size: 10" x 14" x 2.37". Finished Puzzle Size: 19.25" x 26.5". The Michigan Avenue Bridge runs north-south, crossing the Chicago River at the foot of what is known as the Magnificent Mile. With two levels for vehicle and foot transport, the bridge has been at the heart of Chicago life since being constructed in 1920. Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. This superior quality puzzle will delight and educate all at the same time.