Road and Driveway Construction in Corvallis, Montana

Well-Built Roads Designed for Everyday Heavy Traffic

When a road ruts, floods, or slides out in spring melt, it does not just annoy you, it can strand your home, your fields, or your equipment right when access matters most. At Bohlander Construction, we have spent 13 years building and rebuilding private drives, ranch access roads, and rural routes across Corvallis, Montana. Every road we lay down starts underground, with the compacted base and honest drainage that decide whether a surface carries heavy loads for years or quietly comes apart after a season or two.


The build follows a clear order. We clear the route, strip unstable material, compact a structural base, crown the surface for runoff, and finish with aggregate matched to the traffic you actually carry. Tired roads get regraded and reshaped, with the crown reestablished, ditches cleared, and culverts set so water leaves the roadbed. We do this work throughout the Bitterroot Valley too, for landowners in Hamilton, Stevensville, Florence, and Missoula who need a route that holds through mud season and long winters.


Owning our graders and haul trucks is what lets us start when promised and keep moving without waiting on rentals, while holding our pricing fair. You work directly with the owner from the first walkthrough to the final grade, so questions get answered on the spot and nothing stalls in a chain of subcontractors. If your driveway or road needs building or rescuing, send us the details on our contact page and we will map out something built to last.

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Our Road and Driveway Services

  • Private Driveway Construction

    A driveway is the first thing you use and the first thing guests see. We clear and grade the route, build a compacted base, and top it with aggregate that stands up to daily traffic and rough weather, giving you a lasting approach.

  • Ranch and Access Road Building

    Working land needs roads that carry real weight. We build access routes to fields, barns, and back acreage that handle trucks, trailers, and equipment without rutting. Proper width, base depth, and drainage keep these roads passable through mud season and heavy hauling alike.

  • Road Regrading and Reshaping

    Time, traffic, and runoff wear roads into ruts and potholes. We regrade tired surfaces, reestablish the crown, and reshape the profile so water sheds off instead of pooling. A fresh grade restores a rough road to smooth, drivable condition without a complete rebuild.

  • Culvert and Drainage Installation

    Water is the enemy of any road. We install culverts and drainage where routes cross ditches, creeks, or low ground, carrying flow safely beneath the surface. Directing water away from the roadbed prevents the washouts and soft spots that destroy roads over time.

  • Road Base Preparation and Compaction

    Every durable road starts underground. We strip unstable material, lay and compact a structural base, and build it up in lifts so it will not shift under load. This hidden groundwork alone keeps the finished surface from rutting, cracking, or sinking later on.

  • Erosion Control and Ditch Grading

    Roads on slopes need water managed right alongside them. We cut and grade ditches, shape shoulders, and add erosion control so runoff follows a planned path. Keeping water in the ditches and off the road protects your surface and shoulders from washing away.

Benefits of Road Construction

All Season Accessibility

You should reach your home or fields no matter the weather. A built road with a solid base and good drainage stays passable through spring melt, summer storms, and winter freeze. That reliable access keeps daily life and work moving without seasonal headaches.

Better Water Drainage

A road that sheds water lasts. With a crowned surface, graded ditches, and culverts where they count, rain and snowmelt flow away instead of soaking in. The payoff is a firmer surface, fewer soft spots, and far less erosion eating at your route.

Surfaces Built for Heavy Loads

Farm trucks, equipment, and delivery vehicles put serious weight on a road. A base built and compacted for the loads you carry means the surface holds up instead of breaking down. You get a route that handles the real hauling your property demands.

Fewer Ruts and Washouts

Ruts and washouts are a drainage and base problem, not bad luck. When the groundwork and water management are done right, those failures largely disappear. You spend far less time patching, regrading, and working around damage after every heavy rain or spring thaw.

Safer Travel on Your Property

Smooth, well drained roads are safer roads. Even surfaces and clear sightlines reduce the risk of getting stuck, sliding, or bottoming out. Whether it is family, guests, or an emergency vehicle, everyone reaches your home more safely on a built route every time.

Durable Long Term Results

Cutting corners on a road shows up fast. Building it correctly, with the right base, crown, and drainage, gives you a surface that serves for many years with only light upkeep. It is groundwork that pays you back every single time you drive.

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Create Smoother Access Across Every Stretch Ahead

Dependable access is easy to take for granted until a road fails you at the worst moment. At Bohlander Construction, we build and rebuild driveways and roads across Corvallis, Montana with a compacted base, a proper crown, and drainage that carries water where it should go. From a fresh private driveway to a rutted ranch road that needs reshaping, we handle the clearing, grading, and surfacing with our own equipment and clear, direct communication from start to finish. When your route needs building or rescuing, share the details through our contact page or request a quote, and we will map out a road built to hold up season after season.

Frequently Asked Questions

  • How long does it take to build a driveway?

    Standard residential driveways usually take one to three days once the route is cleared and the base is ready. Longer drives or difficult ground take more. With 13 years of experience, Bohlander Construction gives Corvallis, Montana owners a realistic timeline before we start.

  • How do you maintain a gravel road?

    Regular grading keeps a gravel road healthy. Reestablishing the crown, clearing ditches and culverts, and topping up worn material prevent most problems. When ruts or potholes appear, a fresh grade and added aggregate bring the surface back before issues become major repairs later.

  • What slope or crown does a road need to drain?

    A crown of roughly two to five percent works for most roads, meaning the center sits slightly higher than the edges. That gentle slope sheds water to the ditches on either side, keeping the roadbed dry and preventing standing water that causes potholes.

  • Why does my gravel road get washboards and potholes?

    Washboarding and potholes come from traffic, moisture, and a lost crown or weak base. When water sits on the surface or the base was never compacted, ruts form quickly. Restoring the crown, drainage, and a solid base is what fixes the recurring pattern.

  • Do I need a culvert for my driveway?

    If your driveway crosses a ditch, swale, or natural water path, then yes, a culvert lets that flow pass beneath instead of over the surface. Bohlander Construction sizes and sets culverts on driveways around Corvallis, Montana to keep water moving and roads intact.

  • What is road base and why does it matter?

    Road base is the compacted layer of aggregate beneath the surface that carries the load. Without it, even good top gravel sinks into the soil, rutting and failing fast. This strong, well compacted layer is the single biggest factor in a road life.

  • How wide should a driveway be?

    Single lane drives usually run about ten to twelve feet wide, though longer drives benefit from pullouts or extra width for larger vehicles. We also plan for equipment and emergency access, so the finished width fits how you will actually use the route.

  • How do you stop a road from eroding?

    Erosion control comes down to managing water. Graded ditches, culverts, water bars, and a shaped shoulder guide runoff off and away from the surface. When water follows a planned path instead of running down the road itself, erosion slows and the surface holds.