on-ramp AmE
entrance ramp AmE
highway entrance AmE
motorway entrance BrE

She was onto the entrance ramp to the 70 before he even got the door closed.

The hatch was open and the small entrance ramp had been extended.

Back at the entrance ramp, the light turned green again.

Repairs to the entrance ramp took more than a week to be completed.

There were indications of an entrance ramp on the north side.

At the entrance ramp to Highway 101 he switched them on.

One remained at the foot of the entrance ramp while the other climbed inside.

Is there an entrance ramp to the data highway near you?

The large rock near the entrance ramp attracted attention to the church.

He walked up the entrance ramp and found the security camera's lens.