What breakup does to a road
Frost leaves the road base from the top down. For a few weeks the surface is thawed and soft over a layer that is still frozen, water has nowhere to go, and a loaded truck pushes the pavement into it. That is why the state and the Borough restrict axle weights in spring: not to be difficult, but because the road is temporarily weak. Alaska DOT&PF publishes the restrictions as public notices, stated as a percentage of legal axle weight, typically from March into June for Central Region roads and applying to every vehicle over 10,000 pounds. The Mat-Su Borough issues its own for Borough roads, which can be tighter than the state highway that leads to them.
What that means for a load
A tandem at 75 percent of legal weight carries about three quarters of what it carries in July. For light material like topsoil, the box is the limit anyway and nothing changes. For D-1 at about 1.4 tons a yard, a full load already stops at 12 tons, about 8.5 yards, and on a restricted road it becomes a lighter load still, or a wait. We check the notice for your route the morning of the delivery. Two loads at the restricted weight cost more than one at full; we tell you that on the quote rather than surprising you.
The pits thaw on their own clock
A gravel pit is a frozen bank until it is not. Crushing and screening start when the stockpiles thaw enough to load, which in the Bowl is usually late April, and D-1 crushed to spec follows after. Topsoil comes even later, because frozen topsoil arrives in chunks and does not rake; mid-May is the honest start for lawn work. Fill from a stockpile can move earlier. Ask what is actually available at the pit that week; we will tell you rather than sell you a frozen load.
The honest calendar
| When | Roads | Pits | What we are doing |
|---|---|---|---|
| November to March | Winter, plowed | Stockpile only | Snow plowing and hauling first; fill and sand on request |
| March to April | Restrictions begin | Frozen; stockpile fill | Split loads, road checks, soft-driveway calls |
| Late April to May | Restrictions lifting | Crushing restarts; topsoil by mid-May | Base course and D-1 orders start in earnest |
| June to August | Open | Full production | Peak: driveways, lawns, contractor hourly |
| September to October | Open until freeze | Winding down | Last topsoil, last driveway tops, winter fill |
Planning around it
- Book spring D-1 for late May unless the pit confirms it earlier.
- Order base fill in April if the driveway is dry and the route is open; it moves earlier than crushed material.
- Give a window, not a date, in April and May, and you will usually get the first legal day.
- Contractors: book the season in April. July trucks go to April callers.
- Watch your own driveway; if it is soft, wait. The material is not going anywhere.
Girdwood and the Valley in spring
The Seward Highway to Girdwood adds avalanche season to breakup; DOT&PF's avalanche program closes the road for control work into spring. The Valley adds Borough restrictions on top of the state's. Both area pages, Girdwood and Mat-Su, cover the specifics.
Questions we get about this
When do restrictions end?
When the road base has thawed and drained, which the state judges route by route. Central Region notices usually lift between late May and June. Check the notice for your road; it is public.
Can you deliver in April at all?
Yes, within the restricted weight and on firm ground. Fill and sand from stockpiles move; D-1 and topsoil usually wait for the pits.
Will I pay more for a split load?
Two lighter loads on a restricted road cost more than one full one. We show it on the quote and offer the wait as the alternative.
Do restrictions apply to Municipal streets in the Bowl?
The Municipality can restrict its own roads too. The state notice covers state highways; local restrictions are posted by the road authority. We check both for your route.