The winds are picking up and we're just getting word via CBS 5 that a downed power line has shut down the I-880 freeway in both directions as of 12:30 p.m. near the High Street exit in Oakland. The power line fell on top of "at least" one vehicle, and all the drivers in the area are being instructed to remain in their cars.

One driver posted a video of the traffic backup on an on-ramp to Facebook, which you can see below.

Because of traffic diversions, the streets in the area are all highly congested, and the freeway backup is described as "massive," with an estimated reopening time put at least an hour from the initial backup, so perhaps by 2 p.m.?

We'll update you as we learn more.

Update 1:40 p.m.: The CHP says that the roadway may reopen by 2 p.m., or one hour from when the Sig-alert was issued. And, to clarify, the power line fell after a big rig on a surface street struck a utility pole, causing the line to fall across the freeway.

As a result of the closure, big rigs are being temporarily allowed on 580.

Update 1:45 p.m.: The northbound lanes of 880 just reopened a few minutes ago, however the southbound lanes remain closed.

Update 2:45 p.m.: I-880 has reportedly reopened in both directions, but expect residual traffic for a while.

Below, photos of the downed utility pole near the High Street interchange.