[3] Its western terminus is the "Flying Wye" interchange with I-84 and US 30 in southwestern Boise, which includes a braided ramp for adjacent exits on both freeways.

[3][4] I-184 travels northeast and crosses over a spur railroad near an interchange with Franklin Street on the south side of the Boise Towne Square shopping mall.

[6] From 2015 to 2022, traffic volumes increased by 3 percent—slower than other area roads—and congestion is typically worse near the Flying Wye interchange during the evening rush hour.

[10] One version of the plan proposed a full loop bisecting Downtown Boise to carry I-80N, but it was rejected in favor of a less costly spur route.

[11] The westernmost section of the connector, including a sprawling wye interchange with I-80N, began construction in July 1965 and cost $9.5 million to build.

[24] The westernmost segment of I-184, including the Flying Wye interchange, was rebuilt from 1999 to 2004 to accommodate an additional set of lanes.