As reported by the Wrocław branch of the General Directorate for National Roads and Motorways:

Repairs to the concrete slabs on the A4 motorway, on the Krzyżowa–Krzywa section, are beginning. […] The repairs will start with replacing slabs on the northern carriageway, i.e. the carriageway towards Zgorzelec, near kilometre 54.

How will the work proceed?

GDDKiA:

    The first stage will involve injecting the slabs in the fast lane and reinforcing the shoulder with aggregate. For the duration of the work, the left (fast) lane of the northern carriageway (towards Zgorzelec) will be closed first.
    • During the next stage (1 October 2021), the slow (right) lane will be closed, and work involving the removal of damaged slabs and construction of new ones will be carried out there. Replacement of the slabs in the fast lane is scheduled for 5 October.
    • From 8 October, repair work will cover the slabs at km 52.870 and 53.070 on the southern carriageway, i.e. the carriageway towards Wrocław.
The road manager urges drivers to exercise caution.

The work is expected to take several days.

8639