San Diego to Phoenix freight

Border freight and biotech heading east

San Diego ships two kinds of freight to Phoenix. The first crosses the border at Otay Mesa from the factories of Tijuana, which build televisions, medical devices, electronics and aerospace parts, and then moves inland from the Otay Mesa warehouses in domestic trailers. The second is San Diego’s own: medical and laboratory supplies from the biotech cluster, craft beverages, consumer goods from the distribution centers of Otay Mesa and Miramar, and building products and equipment on flatbeds for the Phoenix construction market.

The westbound half of this corridor, Phoenix to San Diego, is flatbed work for us, building products and steel bound for the coast, and the trucks that bring that Phoenix freight into San Diego are the very trucks we put under eastbound loads, so both directions are handled by the same dispatch desk in Covina. The dispatcher who books your load confirms the dock, watches the truck over the Lagunas and across the desert, and sends the signed delivery receipt as soon as the driver has it.

Interstate 8: up the mountains, down to the valley, across the desert

From San Diego the truck heads east on Interstate 8 through El Cajon and Alpine and climbs into the Laguna Mountains to about 4,000 feet. The hard part of the eastbound trip is the descent on the other side: the Mountain Springs grade drops the road from the mountains to the Imperial Valley floor in a few miles, with runaway truck ramps and a mandatory brake check, into desert that sits below sea level around El Centro and Holtville.

The road then crosses the sand dunes near Glamis, bridges the Colorado River into Arizona at Yuma, where eastbound trucks pass the Arizona port of entry, and runs 115 miles of open Sonoran Desert to Gila Bend. There the truck turns north on State Route 85 to Buckeye and east on Interstate 10 into the Phoenix area. A delivery in the West Valley, Goodyear or Avondale, is 20 miles shorter than one in Mesa or Chandler.

Summer heat and the winter harvest

From June into September the stretch from El Centro to Gila Bend runs above 110 degrees, with few services, so carriers fuel in the Imperial Valley and avoid the hottest hours for the long flat stretch where a tire failure is most likely. Phoenix adds its monsoon from July into September: afternoon storms that drop visibility to nothing and flood the washes beside Interstate 10 for an hour.

From November into March the Imperial Valley around El Centro harvests winter vegetables for the whole country, and its roads carry harvest trucks and produce haulers heading for the coast. The lane keeps moving; pickups near the valley slow down a little. Mountain wind in the Lagunas affects a tall flatbed load in any season.

Same day or next day

With roughly six and a half hours on the road, a load picked up in San Diego by midmorning can deliver in Phoenix the same afternoon, and a later pickup delivers the next morning. The clock works against the eastbound truck half the year: Arizona leaves its clocks alone all year, so from November into March a truck leaving San Diego at 8 AM arrives on a Phoenix clock that is an hour later, and a receiver closing at 4 PM in Phoenix closes at 3 PM San Diego time. From March into November the two cities match.

Which way the freight leans

Far more freight rolls into Phoenix than out of it. The metro area keeps adding people faster than almost any other in the country, and its stores, warehouses and building sites draw loads from every direction, while the freight it sends back out fills fewer trucks than arrive. That makes San Diego to Phoenix the heavier direction of this corridor for a dry van, and it shapes what a carrier weighs before accepting a load: where the truck will find its next one after it unloads in the Valley of the Sun.

Flatbeds have the better of it. Phoenix also makes and stages building products, structural steel and solar racking for Southern California, which is why what we haul west from Phoenix to the coast rides mostly on flatbeds, and an open deck truck that delivers to an East Valley job site is well placed to load back toward the coast. A van has a harder time. Westbound van freight out of Phoenix exists, from the distribution centers of the West Valley and the food and beverage plants around the metro area, but it is spread across many carriers, and a van driver may wait a day for the right load or run empty to Los Angeles.

For a San Diego shipper the practical result is that notice and flexibility pay. A load offered a few days ahead lets our dispatch desk match it with a carrier that already has westbound freight lined up in Phoenix, or with one of our own trucks heading back from an Arizona delivery, and a pickup window of a day rather than an hour widens the field again. Freight from Otay Mesa with a firm crossing time and a ready dock gets covered fastest, because the carrier can plan both halves of the round trip.

Quoting an eastbound load

Tell us whether the freight is at an Otay Mesa warehouse, a plant in the city or a yard up the coast, because the pickup end of San Diego County spreads over 40 miles. Give the pallet count and weight, or dimensions and weight for a flatbed, and the delivery address and appointment in the Phoenix area. Our own lane history and the morning diesel price set the range shown above the form for lanes we have priced; the firm price for your load comes back from the dispatcher through the quote form.

The two ends are described on truckload shipping in San Diego and truckload shipping in Phoenix. The westbound counterpart of this lane is Phoenix to San Diego freight.