Supply Chain Disruption Planning for Freight

Supply chain disruption used to be a once-a-decade conversation. Over the last six years, it’s become an annual one. Port strikes, weather events, tariff policy changes, carrier capacity contractions, and equipment shortages have each, at various points, gated imports in ways that most contingency plans didn’t anticipate. For supply chain leaders, procurement managers, and CFOs, freight risk has moved from an operational line item to a board-level topic.

BlackBridge Logistics has moved freight through COVID backlogs, the 2021-2022 LA/LB container crisis, the 2024 ILA coast-wide port strike, and multiple hurricane seasons. This guide covers the real disruption types we see, the lessons worth absorbing from recent events, and what belongs in a freight contingency plan that actually works when the disruption hits.

The disruption types that actually matter

Not all supply chain risk is the same. The disruptions that have historically stalled imports fall into a few distinct categories, and each requires different preparation:

• Port labor events: ILA East and Gulf Coast strikes, ILWU West Coast work slowdowns. Can gate an entire coast for days or weeks.
• Weather events: Hurricanes on the East and Gulf coasts, atmospheric rivers on the West Coast, severe winter weather at inland rail ramps.
• Tariff and policy changes: Section 301 tariffs, de minimis rule changes, sudden import restrictions. Create pull-forward demand spikes that overwhelm port capacity.
• Carrier capacity crunches: Ocean carrier capacity pulls during low-demand periods, then shortages when demand returns. Trucking capacity contractions during peak season.
• Equipment shortages: Chassis pool exhaustion, container shortages at origin, tight rail equipment in key lanes.
• Terminal congestion: Vessel bunching, IT system outages, terminal operator labor issues.

Lessons from recent disruptions

Three disruptions in the last few years are worth studying because they each exposed different weaknesses in typical import supply chains:

COVID backlogs (2020-2022): Demand whipsawed from collapse to historic surge. Ocean carrier capacity couldn’t flex fast enough. Importers with sole-source origin relationships and single-port routing found themselves holding cargo at anchor for weeks.

2021-2022 LA/LB container crisis: Container dwell times at LA/LB ran past 10 days at peak. Queues of 100+ vessels waited for berths. Importers who had diversified to East Coast and Gulf entry points kept cargo flowing. Those who hadn’t paid demurrage, premium rates, or both.

2024 ILA coast-wide strike: The first full East and Gulf coast strike since 1977. Only three days long, but the aftershock — vessel bunching, chassis shortages, rail congestion — rippled for weeks. Importers who had bonded storage in place and pre-positioned inventory held production; those running lean stopped lines.

The common thread: optionality beats optimization during a disruption. A supply chain tuned for minimum cost with no diversification has no moves when one node fails.

Routing diversification

The single most effective hedge is the ability to route through multiple ports. An importer with Asia origin can, with some effort, route through LA/LB, Oakland, Seattle/Tacoma, or via Panama Canal to East Coast ports. Each routing has different transit times, rates, and inland costs, but the flexibility to shift bookings by vessel pays for itself the first time one coast shuts down.

Practical multi-port strategy looks like this:

• Primary port: The lowest landed-cost routing for normal operations. For Asia origins to Midwest destinations, this is typically LA/LB plus rail.
• Secondary port: A pre-tested alternate with drayage and inland relationships already in place. For the same lane, this might be Houston or Savannah via all-water service.
• Tertiary port: For extreme events. Can be Port Newark, Charleston, Miami, Oakland, or Seattle/Tacoma depending on origin.

The key is that the drayage, rail, and inland legs need to be pre-tested. Trying to set up a new drayage provider at an unfamiliar port in the middle of a disruption is when importers get taken advantage of on rates.

Carrier diversification

Relying on a single ocean carrier for a lane creates the same single-point-of-failure risk as relying on a single port. When one carrier blanks sailings or loses vessels to weather, a multi-carrier booking strategy lets volume shift. The same logic applies to drayage and trucking — working with multiple carriers across ports is standard risk management.

This is where a brokerage relationship matters. Brokers hold relationships across many carriers and can shift capacity faster than direct contracts allow. It’s one of the structural reasons importers use brokerage — built-in capacity diversification without managing 30 vendor contracts.

Bonded storage as hedge

Bonded warehouses let you land and hold cargo without triggering duties until the goods are withdrawn for consumption. During tariff changes, bonded storage gives importers the option to delay entry. During labor or weather disruptions, it provides a staging buffer. During demand swings, it decouples the import timing from the production timing. Our bonded warehouse drayage service runs this pattern for customers with cyclical or tariff-exposed cargo.

Alternate modes — intermodal and flatbed

When over-the-road trucking gets tight, intermodal rail has capacity. When containers are short, flatbed and FTL become options for cargo that can break out of containers. When transit times compress, expedited absorbs the urgent moves. A modally diverse plan gives planners real levers during disruption.

What belongs in a freight contingency plan

A practical freight contingency plan, at minimum:

• Named backup ports with pre-vetted drayage providers and drafted-but-unsigned agreements ready to go.
• Alternate-mode playbooks for shifting time-sensitive cargo to air, expedited truck, or intermodal.
• Communication protocols: who notifies who, how frequently, through which channel. Escalation paths to ocean carriers, customs brokers, and consignees.
• Inventory buffers sized to the realistic disruption window — 14 days of safety stock won’t help during a 6-week disruption.
• Bonded storage capacity identified at key ports, with contracts or MOUs in place.
• A single freight partner who can execute across modes and ports without you having to coordinate between them.

The plan doesn’t need to be complex. It needs to be real — written down, tested at least once, and known by the people who’ll execute it under pressure.

Build a disruption-resilient freight program with BlackBridge

BlackBridge Logistics works with importers, forwarders, and supply chain teams to diversify port routing, pre-test alternate modes, and execute during disruption. We serve freight forwarders and direct importers across every major US port. Call (516) 252-3395 or visit our drayage services page to talk about your contingency plan.