The route is a beauty with some good views and not much brush - there was one cliffy obstacle I avoided going climbers left. In the photo below I see now I should have visited the viewpoint at the top of the big cliff - the view must be pretty huge from there. I took this photo of the ridge I traveled from the other side of the freeway at the end of the day - Wyeth campground is just to the left out of the picture. You can see most of the route, just follow the trees up from the left all the way up.
There was a nice opening for a view early on at the north end of a nice little bench.
The bench - not much brush along the entire route and lots of game trail to travel.
I routed around a cliff and circled back around to get above the cliff on a spot with good views from higher up:
I made my way up an open slope, steep but not uncomfortably so.
From the steep slope I got a good look at the Gorton Creek drainage. The ridge on the left (east) side of Gorton Creek is referred to as Wyeth Spur from Gorge Classic Climbs and is apparently doable as a hike (I've not done it).
I topped out on the ridge and intersected Gorton Creek Trail - very pretty and nicely graded:
From Gorton Creek trail I got a look at Wyeth Spur. The near ridge is Wyeth Spur and the one beyond is the ridge Wyeth trail traverses:
The trip across the plateau was nice, still early spring there with patches of rapidly melting snow. I treated myself to unfiltered water from the headwaters of Gorton Creek, very tasty and ice cold.
Some stuff got moved around:
11-12 miles with ~4300' cumulative elevation gain in 7.5 hours. On the map below green indicates the off trail route I traveled today and the black line is a suggested route up Wyeth Spur. The question marks on Wyeth spur are around a rock outcrop that needs avoiding - GCC sez use a nearby game trail to get above - I'm guessing that it is climbers right (west).
