Easements · Roads · Right-of-way · October 22, 2026
How Wide Is a Road Easement? Public and Private Roads
How wide is a road easement? It depends on the plat, deed or statute. Why 66 feet is common, how fire codes set 20 feet, and how to find your width.
How wide is a road easement? There is no single national number. The width is whatever the document or law that created the road says it is: a recorded plat, a deed, a separate easement agreement, or a state highway statute. A private lane across a neighbor’s land might be described as a 20-foot strip, while many rural public roads sit inside a much wider right-of-way than the pavement you drive on. In Michigan, for example, state law presumes a road that became public through long use is 4 rods, or 66 feet, wide. This guide explains where those widths come from, why the strip is usually wider than the road surface, and how to find the actual width that applies to your parcel.
The short answer
- Private road easements: the width is set in the recorded easement, deed or plat. If the document gives a number, that number controls.
- Public road right-of-way: set by the subdivision plat, a road dedication, a purchase by the road agency, or a state statute for roads created by use.
- A common rural benchmark: 66 feet (4 rods), often measured as 33 feet on each side of the centerline. Michigan writes this into law for highways established by use.
- Fire access: many local fire codes based on the International Fire Code require at least 20 feet of clear driving width for a fire apparatus access road, which can drive the minimum for private roads serving several homes.
- The pavement is not the easement. Ditches, shoulders, utility poles and snow storage usually sit inside the strip too.
Where a road easement’s width comes from
| Source | How the width is stated | Where to look |
|---|---|---|
| Recorded subdivision plat | Streets drawn and labeled with a right-of-way dimension, such as “60’ R/W” or “66’ ROW” | County register of deeds or recorder, often linked from the county GIS |
| Private easement agreement | A strip of a stated width, a strip measured from a centerline, or a fully described parcel | Deed records for your parcel and the neighbor’s parcel |
| Deed reservation | Wording such as “reserving an easement for ingress and egress 30 feet wide along the north line” | The deed that split the land |
| Road agency purchase or condemnation | Right-of-way deeds and highway plans with widths that can change along the road | State DOT or county road department right-of-way maps |
| State statute for roads created by use | A presumed width, such as Michigan’s 4 rods | The state’s highway code |
| Section-line road laws | A strip on each side of a section line in some public land survey states | State law and the county road office |
Because the sources differ, two roads in the same county can have very different widths. Our guide to easement vs right of way explains the difference between a road the public owns outright and one it only has the right to use, and fee in the street vs an easement for the road covers who owns the dirt under the pavement.
Public road rights-of-way
Older rural roads often trace back to survey units. A rod is 16.5 feet, so 4 rods is 66 feet and 2 rods is 33 feet. Michigan’s general highway law (MCL 221.20) says roads that become public through time and use are 4 rods wide, and that when such a road runs on a section or quarter-section line, the line is the center with 2 rods of road land on each side. Michigan courts treat that 66 feet as a presumption that can be challenged, and have held that a road created only by use generally does not reach beyond the land the public actually used. So even the statute is a starting point, not a guarantee.
The County Road Association of Michigan describes a 66-foot permanent easement as typical for roads under county road agency control, and notes that adjoining owners are not supposed to put permanent structures in that strip, though mailboxes are usually allowed. Many other states have their own presumed widths or section-line rules, which is why section-line easements can surprise rural buyers.
Newer subdivision streets are usually set by the plat, and widths tend to follow the local subdivision rules in force when the plat was approved. A plat will show the right-of-way as a gap between lot lines with a dimension written across it. Some roads change width along their length; plats and highway plans mark those spots as variable width.
Private road and driveway easements
For a private road, the width is a matter of the written grant. A well-drafted ingress and egress easement or access easement states the width and where the strip lies, for example “a 25-foot-wide strip, the centerline of which is described as follows.” Shared lanes are often written up as a shared driveway easement with a maintenance clause.
Trouble starts when the document is vague, such as “a right of way to the county road,” with no width at all. In many places a court then looks at what was reasonably needed when the easement was created and how it has been used, so the answer may come down to the existing travel lane plus what is needed to maintain it. Easements that arise without a written grant, such as an easement by necessity or a prescriptive easement, are especially likely to be limited to the path actually used. These rules vary by state, so treat this as background only.
How fire codes affect width
Section 503.2.1 of the International Fire Code, which many states and cities adopt with local changes, calls for fire apparatus access roads to have an unobstructed width of at least 20 feet, not counting shoulders, plus a clear height of at least 13 feet 6 inches. The code also says those roads may not be blocked, including by parked cars, and lets the local fire official adjust the width. Whether a given private road counts as a fire apparatus access road depends on how many buildings it serves and how far they sit from a public street, and some jurisdictions use a narrower standard for a driveway serving one or two homes. Grand Junction, Colorado, for example, describes a 12-foot minimum for such a private driveway in its fire access guide.
The practical upshot: an easement that is only 12 or 15 feet wide may be fine for an existing house but can become a problem when someone wants to split the land or add homes. Ask the local planning or fire office before you rely on a narrow strip for new construction. For a homeowner’s view of the driving surface itself, AsphaltTons has a guide to fire truck access on a residential driveway.
Why the easement is wider than the road
- Ditches and drainage. Rural roads need room on both sides for runoff.
- Shoulders and recovery space for vehicles that leave the travel lanes.
- Utilities. Power poles, phone, cable and fiber lines are often placed in road rights-of-way with the road agency’s permission. A utility easement map helps separate those from the road strip.
- Snow storage, signs and sight lines at curves and intersections.
- Room to widen or rebuild the road later without buying more land.
So if your lawn runs to the edge of the asphalt, part of what you mow may be inside the right-of-way. That matters for fences, landscaping walls, signs and driveway aprons.
How to find the width for your property
- Start with the county parcel map. On most county GIS viewers the parcel lines stop at the edge of the right-of-way, leaving a band between facing parcels. Measure that band with the map’s measure tool for a rough number. Our guide to finding an easement on a parcel map walks through the layers to turn on.
- Pull the recorded plat if your land is in a subdivision. The street width is usually written right on the drawing. See what is a recorded plat.
- Read your deed and the deeds around you for easement grants or reservations. How to find easements on a property lists the search steps.
- Call the road agency. County road departments and state DOTs keep right-of-way maps and can often tell you the width from centerline in front of your lot.
- Check a survey. A boundary survey shows the right-of-way line and any easements found in the title work. Our guide on how to read a property survey explains the labels.
Keep in mind that GIS lines are drawn for tax mapping and can be off by several feet. If the exact edge matters for a fence, building or dispute, hire a licensed surveyor.
Width wording you will see
| Phrase | What it usually means |
|---|---|
| “66’ R/W” or “66 ft ROW” | The full right-of-way is 66 feet wide from one side to the other. |
| “33 feet from centerline” | Measure 33 feet each way from the road’s center; the full strip is 66 feet. |
| “Half-width” or “one-half of a 60-foot street” | Only the side adjoining this parcel was dedicated; the other half comes from the opposite parcel. |
| “A strip 20 feet wide, 10 feet on each side of the following centerline” | A described path whose width is split evenly around the line. |
| “Variable width” | The width changes along the road; check the drawing or highway plan. |
What you can and cannot do in the strip
Rules depend on whether the land is owned by the road agency or only burdened by an easement, and on local ordinances. In general, expect to need a permit for driveway work and anything permanent in a public right-of-way, and expect that the road agency or easement holder can remove obstructions. On a private easement, the owner of the land usually keeps using it in ways that do not interfere with access. A recorded agreement may also set rules for gates, parking and upkeep; a turnaround easement is a common add-on at the end of long lanes.
This page is general background, not legal or surveying advice.
Questions people ask
How wide is a road easement?
It depends on the document or law that created it. Private easements are usually a stated strip, such as 20 or 30 feet, while public roads follow the plat, a dedication or a state statute. Michigan presumes 66 feet for roads that became public through use.
Is a road easement measured from the center of the road?
Often, yes. Rural public roads are commonly described by a distance from centerline, such as 33 feet on each side. Private easements may describe a centerline with a set width on each side or give the full width along one property line.
How wide does a private road need to be for fire trucks?
Many local codes based on the International Fire Code require fire apparatus access roads to have at least 20 feet of unobstructed width and 13 feet 6 inches of overhead clearance. Local fire officials can adjust that, and driveways serving one or two homes may have a different standard.
What if my easement does not list a width?
Courts in many states look at what was reasonably needed when the easement was created and how it has been used, so the width may end up close to the existing travel lane. A real estate attorney can tell you how your state handles it.
Can I build a fence in a road right-of-way?
Usually not without permission. Road agencies generally do not allow permanent structures in a public right-of-way, though mailboxes are commonly allowed. Check with the county road office before building near the road.
How do I find the road right-of-way width on a parcel map?
On most county GIS viewers the parcel lines stop at the right-of-way line, leaving a band between facing parcels. Measure that band for a rough width, then confirm with the recorded plat, the road agency or a survey.