Update 7/14/12: Forest Road 99 to Windy Ridge is now open.
Update 7/3/12: Looks like Forest Road 25 is now open.
The Forest Service has a post outlining the current state of the Forest Roads that access popular Mt St Helens areas, mostly on the east side of the mountain. Forest Road 99 remains closed, but not sure if that means in it's entirety or at the gate farther in. Either way, you aren't getting to Windy Ridge. The road status page for FR 99 has it opening sometime after July 14th.
Forest Road 26 is also closed beyond FR-2612 and expected to open in mid-July as well.
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Forest Road 25, the popular 'back route' to St Helens is currently closed. There is a map and more detailed information on the FR-25 road status page.