This is a new footbridge across the Xa Lo Ha Noi highway (formerly Vo Nguyen Giap). It runs through the Thao Dien metro station. There are several access stairways: on both sides of the metro station (North: Exit 1, South: Exit 3), on both "Song Hanh Xa Lo Ha Noi" secondary roads (North: Exit 2, south of the highway: unnamed stairway) and on the west side of the curve of Tran Nao (unnamed stairway).

The stairways should be connected to the existing road network's sidewalks, I'm not sure how to do this (requested a review for the edit). The section that goes through the metro station should probably also be retagged, since it's not only a pedestrian bridge at this point but rather the metro station's hall.