Logistics & Cold Chain
Published on
How Fresh Produce Crosses the Border at Pharr, Texas, Step by Step
From the farm in Mexico to your dock: the inspections, documents and cold-chain steps behind every load of produce crossing at Pharr, Texas.
Juan Mercado
Director of Supply Chain & Founder
15 min
A load of fresh produce from Mexico clears two customs systems and several US inspections before it reaches your dock. That includes customs, agriculture and FDA checks, and for some commodities a USDA grade inspection. When the paperwork is filed ahead and the cold chain holds, most of that happens out of sight. When it doesn't, product sits on a hot bridge. This guide walks through each step at Pharr, Texas, and what buyers should ask their supplier.
Why Pharr?
The Pharr–Reynosa International Bridge is the busiest gateway for Mexican produce in the US. According to the City of Pharr, it handles more than 65% of the nation's fresh produce imports from Mexico. The surrounding McAllen–Pharr area has one of the densest clusters of produce cold storage and inspection facilities on the border. For a buyer anywhere in North America, that means faster turnaround and more trucks heading north.
The crossing at a glance
Three steps happen in Mexico, the load crosses the bridge, and four more happen in the US before it reaches your dock.
The crossing, step by step
1. Harvest, cooling and packing in Mexico
The crossing starts long before the border. Produce is harvested, cooled to its target temperature and packed to the buyer's spec at a certified packing house. Each case gets a lot code so it can be traced back to the field. A refrigerated truck is then loaded and set to the right temperature for the commodity.
2. Documents filed before the truck rolls
The fastest crossings start with paperwork, not trucks. Before the load reaches the border:
SENASICA (Mexico's agricultural health agency) issues a phytosanitary certificate confirming the produce meets US plant-health requirements.
A Mexican customs broker files the export declaration (the pedimento) with Mexican customs.
A US customs broker prepares the US entry. The International Fresh Produce Association notes that only licensed customs brokers can act as agents for Mexican exporters in US customs matters.
FDA Prior Notice is filed for the shipment. CBP will not release a food shipment without proof that Prior Notice was filed.
3. Mexican export clearance in Reynosa
The truck arrives at the Mexican export lanes in Reynosa, where Mexican customs reviews the export declaration and may inspect the load. Many loads are handed to a short-haul transfer (drayage) truck that specializes in crossing the bridge, while the long-haul truck stays in Mexico.
4. Over the bridge to US Customs (CBP)
On the US side, the truck enters the CBP cargo facility in Pharr. CBP checks the entry documents and Prior Notice, and decides whether the load is released or sent for a closer look. CBP agriculture specialists also enforce USDA plant-health rules, checking the phytosanitary certificate and inspecting for pests.
5. FDA and USDA inspections
Depending on the commodity and the shipment, a load may also face:
FDA review or sampling. FDA may sample a shipment or tell CBP to release it. A problem leads to a Notice of Detention.
USDA AMS grade inspection (Section 8e). Some commodities must meet the same grade, size, quality and maturity standards as US product. Under Section 8e, that list includes avocados, field-grown tomatoes, onions, table grapes, grapefruit and oranges, among others. The importer must have each lot inspected before it enters the US market. Baby broccoli, peppers and limes are not on that list.
6. Release and cold storage in the Rio Grande Valley
Once released, the load moves a short distance to a cold-storage warehouse in the Pharr–McAllen area. There it is received, temperature-checked, inspected against the buyer's spec and either stored or consolidated with other items. This is where a supplier's facility matters most. At Plein Produce, every inbound lot is checked against spec on arrival, rooms are held at commodity-specific temperatures, and loading docks are climate-controlled.
7. Delivery to the buyer
Finally, a US refrigerated carrier picks up the order, often a mixed load of several items, and delivers it to the buyer's warehouse, distribution center or store. The buyer receives a final temperature reading and the lot codes for traceability.
Documents behind every load
A missing or mismatched document is one of the easiest ways for a load to get held. These are the main papers involved and who handles each:
Document | Issued or filed by | What it proves |
|---|---|---|
Phytosanitary certificate | SENASICA (Mexico) | The produce meets US plant-health rules |
Export declaration (pedimento) | Mexican customs broker | The load is cleared to leave Mexico |
Commercial invoice and packing list | Shipper | What is in the load, how much and its value |
Bill of lading | Shipper / carrier | Who is shipping what to whom; carries the Prior Notice number |
FDA Prior Notice confirmation | US customs broker or importer | FDA was told about the food shipment in advance |
US customs entry | US customs broker | The load is declared to CBP for release |
AMS inspection certificate (Section 8e items only) | USDA AMS | The lot meets US grade and quality standards |
Food safety audit certificates | Third-party auditor / SENASICA | The farm and packing house follow food safety practices |
Buyers rarely handle these papers themselves, but they should know they exist. Ask your supplier who files each one and how fast they fix a problem when it comes up.
What slows a load down, and how good suppliers prevent it
Common cause of delay | What a good supplier does |
|---|---|
Paperwork errors or late Prior Notice | Files documents before the truck leaves the packing house and double-checks names, weights and lot numbers |
Pests found in agriculture inspection | Clean fields and packing lines; inspects product before loading |
FDA hold or sampling | Keeps food safety certifications current and traceability records ready |
Load sent for a closer CBP look | Works with experienced brokers and carriers with a clean compliance history |
Heavy traffic at peak hours and season | Plans full loads and crossing times with the broker; builds buffer into delivery schedules |
Temperature drift while waiting | Pre-cools product, sets reefers correctly and moves loads into cold storage right after release |
None of this makes delays impossible. What separates suppliers is how early you hear about a problem. At Plein Produce, if a load is held, you know before your delivery window is at risk, along with the plan to fix it.
Frequently asked questions
What percentage of US produce imports from Mexico cross at Pharr? The City of Pharr reports that the bridge handles more than 65% of US fresh produce imports from Mexico.
Who inspects produce at the border? CBP checks documents and enforces plant-health rules through its agriculture specialists. FDA may review or sample food shipments. For Section 8e commodities, USDA AMS inspects each lot for grade and quality.
What is FDA Prior Notice? An advance notice to FDA of each commercial food shipment entering the US. CBP will not release a food shipment without proof it was filed.
Do I need a customs broker to import produce from Mexico? Most importers use a licensed US customs broker to file the entry and secure release. Working with a supplier like Plein that handles importing means you receive the product already cleared.
How long does it take to cross? It varies with traffic, season, time of day and whether a load is selected for inspection. Filing documents early and planning crossing times reduces the risk of delays.
Let us handle the border
Plein Produce plans full loads for a smooth crossing at Pharr, holds product in multi-zone cold storage with 24/7 temperature monitoring, and delivers across North America. You get the produce and the paperwork, without the surprises.
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Sources: City of Pharr: produce season kickoff; International Fresh Produce Association: How to export Mexican fresh produce to the US; USDA AMS: Section 8e import regulations; Cargado: Pharr–Reynosa crossing
