Just saw it on CNN. A Korean AF CH-47 was carrying some equipment to a bridge in Seoul, when one of its rotors hit the concrete pole that supports the bridge, the helicopter crashed on the surface of the bridge. The whole thing was caught on video. I don't know how many people were onboard and whether any of them survived, the helicopter fell about 200 ft. The bridge was closed to traffic at the time, which probably prevented many casualties on the bridge itself.
Any other info?