Asphalt is only as flat, stable and long-lived as the base it sits on. Asphalt paving base preparation covers the layers between accepted subgrade and the first lift of hot mix: the flexible base or crushed stone, its thickness, its moisture, its compaction and its surface tolerance. A base that is thin in places, wet at placement or rutted by trucks will telegraph through the asphalt within a season, and no amount of surface work corrects it afterward.
In the Midland market, caliche is a familiar and economical base material. It is widely used as road base because it compacts well when conditions are right, but it performs poorly when it is wet, so moisture control and drainage are part of every base plan we write. Our role is to coordinate the earthwork partners, the base supplier, the testing firm and the paving contractor so that the base is placed, tested and covered with asphalt before weather or traffic can undo it, and so that the owner's rep sees one schedule instead of four.
Coordinating the base crew and the paver
We coordinate trade partners for utilities and earthwork, and base preparation sits right at the edge between those partners and the paving contractor. The utility partner finishes underground work and backfill. The earthwork partner shapes and compacts subgrade. A base supplier delivers material, a spreader and roller place it and a testing firm checks thickness and density. We hold those handoffs on a single schedule.
Concrete trade partners place and finish concrete, which means we also handle pavements where the surface is concrete and the base is a similar layer. Familiarity with both surfaces helps with the details: thickness verification, edge forms, joint layout and transitions where asphalt meets concrete aprons and curbs.
The most important coordination is the day-to-day call. The paving contractor needs to know which areas are accepted and which are not, and the base crew needs to know where the paver will start. We keep both informed with a short written update each afternoon.
Pavements around the buildings we serve
Retail centers rely on asphalt for parking fields and drive aisles, and the base has to carry delivery trucks as well as cars. Retail shopping centers also have many islands, curbs and utility structures that interrupt the base, so careful trim and compaction around them matter.
Warehouses and distribution buildings have truck courts, trailer parking and long drive lanes. The base for a warehouse site is heavier than for retail, and the loaded wheel paths concentrate near docks. Aviation sites add their own rules, since the airport itself has four asphalt runways and the buildings near it share that pavement culture.
The current Midland passenger terminal was approved by voters in 1996, opened in stages in 1999 and cost about $34.5 million. Landside roads and parking around a facility of that kind show how many pavement types come together at one site, and why a consistent base specification is worth the planning time.
Highways, loops and where the trucks run
Loop 250 is a 12.245 mile bypass of northern Midland, and its west end meets I-20, SH 158 and SH 349. It is a freeway from that west end to Business SH 349 (Big Spring Street). Paving projects along that corridor tend to be commercial, with many access points to the frontage roads. Our corridor page describes how we plan for it.
SH 349 has a junction with Loop 40, which leads to Midland International Airport, on its route around the west side of the city. Sites near the airport benefit from good highway access but also share roads with passenger and cargo traffic, and base deliveries must be timed to avoid peak flows. For work near the field, see our page on the airport area.
We also mobilize trade partners to Odessa, Big Spring and the smaller communities nearby. The longer the haul, the more important it is to deliver base material in the right condition, so we check moisture on arrival and again at placement.
Heat, traffic and equipment around the base
Base placement puts trucks, spreaders and rollers in a tight working area, often with the public nearby. Traffic control, spotters and clear haul routes are required, and workers on foot stay out of the swing path of equipment. Water trucks control dust on the base and protect visibility on adjacent roads.
Howard County experiences common dust storms and high winds in early spring and summer, and the surrounding region is much the same. We stop work when visibility drops or gusts make placement unsafe. Heat is another hazard, especially when hot mix follows the base, so crews are given water, shade and scheduled breaks.
Compaction equipment and nuclear density gauges both require training and care. Only trained technicians operate the gauges, and the rest of the crew stays at a distance during testing. Each of these steps is part of the site safety plan reviewed before mobilization.
Services that bracket the base
Base preparation follows road subgrade preparation and the final trim described under fine grading. Where the surface will be concrete instead of asphalt, the same base ideas carry over to concrete paving, with changes in thickness and tolerance.
Developers who plan large projects, particularly commercial developers, often package the base with the building pad and utilities so a single schedule covers all of it. We support that approach and tie each element to the pour calendar and the paving date.
Edge conditions deserve a word of their own. The place where a new asphalt section meets an existing street, a concrete apron or a building slab is where most early distress shows up, because the base changes thickness, stiffness or moisture at that line. We stake those transitions, step the base where the details require and compact the edge strip with small equipment so it matches the interior. Utility covers, inlets and cleanouts set in the base receive the same care, since a low or high structure turns into a bump the paver cannot repair.
Send the pavement section and the paving date
Send the pavement design, the soil report and the date your paving crew is booked. We will return a base sequence with material approvals, compaction testing and a release date for hot mix.
Common Questions
What material do you use for paving base?
The specification decides. In this area flexible base from a local pit, often a caliche or crushed stone blend, is common. We confirm gradation and plasticity, and we test it on delivery and again after compaction.
How soon after base placement can asphalt go down?
As soon as the base passes testing and is dry and stable. A delay lets traffic and weather damage it, so we aim to have the paving crew follow closely behind.
What happens if the base gets wet?
Wet base can lose strength, and caliche in particular performs poorly when saturated. We allow it to dry, rework it as needed and retest before paving. Drainage is set up to avoid ponding in the first place.
Can base be placed in extreme summer heat?
Yes, with moisture control. Hot, dry days pull water out of the base quickly, so we add water as needed, compact promptly and sometimes start at first light. The testing firm confirms that moisture is in range at the time of compaction, not only at delivery.
Who verifies thickness and density?
A testing firm measures thickness at set points and density with gauges. We review the results with the engineer and correct any shortfalls before the hot mix arrives.