Walk past the gate along a 4WD road. The road contours uphill slightly but mostly goes straight ahead toward a radio/cell phone tower and building. For reference, the location of the cliff is maybe 50 feet west downslope from the tower. A worn trail leads to the cliff past a lone boulder. The freeway is not directly below, but it's visible in the canyon bottom.
Look around and you'll see a few bolts at the top. There's also a good natural belay around a large protrusion that looks like a boulder. There's a steep straight-down trail that leads to the bottom of the route -- it starts above the tower/building.
I heard through word-of-mouth that the bottom of the climb is rated 5.9. It's the most difficult part to get past for beginners. After that it's easier, I'd guess going to 5.7 up to the halfway point, and then maybe 5.5 to the top. Of course, strictly following the bolted route it's probably around 5.9 the whole way up. It's just that you can fudge a bit and climb easier stuff alongside if you need or want to.
There's also at least one more route next to this one. The bottom of another climb is about 30 feet to the west. I didn't venture over to see if there were bolts, but other climbers were having a go in that area.
I don't have a guidebook with this route -- if you know of a book where this route is described, please tell me about it.