A mile marker is a standardized sign placed every mile along a highway, interstate, or major road to indicate the distance from the route's beginning, usually at a state line or a major intersection. Highway engineers and emergency responders rely on these sequential numbers to pinpoint exact locations of incidents, plan maintenance zones, and reference specific stretches of pavement. On interstates, exit numbers often correspond to the nearest mile marker.
Heard on the job
Dispatch, we've a disabled tractor-trailer on I-95 northbound, just past mile marker 142.
Do not mix it up with
- Milepost: Mile markers are specific highway signs indicating distance from a route's origin, while mileposts are traditional markers showing distance to specific destinations.