Kelso Exit 36 Northbound…Passing exit 36 Northbound when you go under the overpass look up to the right where there is a small hill…WSP sits right there. Also there is a turnaround in the middle of the freeway at approx MP 37 and MP 39 they sit there too. There is no airplane radar anywhere in Kelso, but down by Woodland, WA there is a airplane speed trap area but not used often.