The arch spans 60 metres, stands 16 metres high and is the smaller of two arches on the double arch bridge. The larger arch, which is double in size, will be lifted into place later in the summer.
The proportions of the two arches were determined by the off centring of the intermediate pier which was placed to the side to accommodate leisure craft and watersports.
The two arches are linked by a section capable of transferring bending moment. This means that under its own weight, the structure acts as two arches, but as soon as people walk on it, it can work as a two span beam.
When complete, the £15 million bridge will span the River Tees and kick-start regeneration in the area.