Galliford Try has completed installation of a giant 1,125m3 flood attenuation tank at a roundabout in South Tyneside.
The Lindisfarne and John Reid Road roundabouts in Jarrow are both being widened and the dual carriage between them increased from two to three lanes in both directions. The approach roads are also being widened.
The tank is located on playing fields next to one of the roundabouts, which has a history of flooding.
The works are part of a wide scheme for the A19 corridor and aim to save daily commuters 26 hours in the car each year.
The scheme is due for completion next summer.