Draw a one-way freeway segment for the length of the crossover (no connections) Place it next to and parallel to the lane going the opposite direction, following curves
- Set appropriate SL
- Match elevation to segment being mirrored (may need to cut for elevation changes, watch especially around exits and underpasses/overpasses)
At the end of the crossover, merge traffic following entrance ramp geometry guidance (10-15 degrees)
At beginning of the crossover, connect the segment following exit ramp geometry guidance (10-15 degrees). Consider adding wayfinders to match signage or provide guidance. For example,
- I-80 W only / Thru traffic
- I-80 W / I-480 / SR-14 / All Exits
- Note: be sure to remove alt-names to avoid BC
- Consider that there will likely be a SWL separating lanes before the actual lane crosses over into oncoming lanes.