The phrase "along the main road" is correct and can be used in written English.
Example: The restaurant was located along the main road, providing easy access for both locals and tourists.
Armored personnel carriers and rows of boxy troop carriers parked along the main road.
Walking along the main road, one can always see its deep blue.
Most shops along the main road have reopened, but half of the historic centre remains closed.
There are several Internet joints and at least three curry houses along the main road.
Continue along the main road for 100m until you reach the canal.
But its charm is offset by long stretches of sprawl along the main road.
The size of this poultry farm can be seen as you drive along the main road in Chazy.
A BLUE metal fence runs through Zango, a commuter town along the main road out of Luanda, Angola's capital.
All five were walking along the main road when the massive stone wall gave way without warning.
The plantation owners mounted some of the slaves' heads on sticks along the main road, as a warning to others.
Approached along the main road from the historic city, the hall's cobalt blue exterior has a temporal, ghostly quality.
