UT: I-15 shaping point?

[US 89]

Could I-15 get a shaping point between Exit 288 (14600 S) and 289 (Bangerter)? It looks a little odd with the line for UT 287 shown to the right of the I-15 line, despite never running east of 15.

[Duke87]

https://github.com/TravelMapping/HighwayData/pull/2550

Adds a shaping point to I-15 (and to concurrent US 89) to address this.