Definitely Hyacinthoides hispanica. aka Spanish Bluebells.
You don't list where you live, but if they're growing along a roadside, you should dig some up (when the foliage starts to turn yellow after they bloom...) and plant them in your garden. They multiply very fast.
I have lots of them and love them. They'll grow in sun OR shade.
In addition, since you found them growing "wild" that would indicate that you could leave them in the ground all year and not have to dig them up. They'll bloom again nest spring.
