The A5 was partially blocked near Llangefni on Anglesey on Thursday morning following a crash the previous day.
The road was closed in both directions on Wednesday morning between J6 A5114/A5 at Llangefni and J5 A4080 at Gwalchmai due to a jack-knifed lorry.
Temporary traffic lights were put in place as repairs were carried out to a wall.
Both main routes to Holyhead were closed for a time on Wednesday.
The A5 was being used as a diversionary route due to roadworks on the A55.