As you approach 87 from either direction on Chynoweth, the road will take a sharp dip to go underneath. The speed limit in this area is posted as 35 only, a sudden change from the normal speed. People generally continue to go with traffic about 5+ the normal speed under the highway, but traps wait on the other side at the top of the hill where the road gets back to its normal elevation and ticket you for violating the underpass speed. This is compounded by Gunderson high school being on the far side going east, so the school zone may further reduce the speed limit.