New barriers will be put in place on a rail bridge on one of the main roads into Wakefield.
And motorists using the A642 Bridge Road and Quarry Hill, through Horbury Bridge, could be facing delays during the next few weeks while the work is carried out.
A car hit the rail bridge at around 4.40am on Saturday.
The driver abandoned the blue BMW after the crash which caused masonry to fall onto the rail tracks below.
Network Rail said services were briefly disrupted for emergency repairs to the track,
Temporary traffic lights and barriers are in place on the A642.
But permanent concrete barriers are needed.
Rachel Lowe, senior communications manager at Network Rail, said: “These barriers have been ordered and will be in place this week which should allow the temporary traffic lights to be removed, though these may be required again for a short time whilst the scaffold is installed.
“The engineering team is aware of the disruption the damage caused by this crash is creating, and is working closely with the council to carry out the full repair as quickly as possible.”
Neil Rodgers, service director for planning and highways at Wakefield Council, said: “We are working to clear the highway of debris and Network Rail are clearing the tracks and repairing the parapet wall.
“Temporary traffic lights managed by Network Rail are in place and work will be carried out over the next few weeks.”