The tinted-concrete stripe debuted in 1978 as the final piece of I-90, which runs more than 3,000 miles from Seattle to Boston!
The color pays homage to the golden spike in Utah, which marks the spot where the transcontinental railroad came together in 1869.
In 2006 this stretch of interstate had to be repaved and most of the golden panels were paved over.
Now, as part of the 2023-24 construction project for I-90, MnDOT is restoring the stripe in the original locations. Crews installed the panels on the eastbound lanes in July and will install the stripe on the westbound lanes in 2024.