Picking a heavy-haul broker is procurement, not a quote comparison. The cheapest spot rate is meaningless if the load sits at a bridge for three days or the broker quietly factors the cost of "we'll figure it out" into the rate. Five things actually matter.
First: authority verification. MC and DOT numbers should be linkable to a SAFER snapshot showing active status, current insurance, and a safety rating that's at least Satisfactory. Anything else is a flag.
Second: bond and insurance — and know the difference. Every legitimate broker carries the FMCSA BMC-84 surety bond ($75K); it guarantees the broker's financial responsibility to carriers, not your cargo. What actually protects your freight is the carrier's cargo insurance — and that's where a real broker earns their keep. The right question isn't "how big is your bond," it's "do you verify the carrier's cargo limits match the value of my load before pickup?" For project cargo above $1M, the carrier should carry a matching limit or rider, and your broker should have the certificate on file before the truck rolls — not after a claim.
Third: named lanes. A broker who claims "we run everywhere" is a broker who doesn't have a desk-level operating focus. Real heavy-haul brokers name their lanes — specific origin/destination pairs, specific port partnerships, specific cross-border crossings.
Fourth: named carriers. Ask who's actually hauling your load. If the answer is "we'll find someone on the board," that's a spot-market broker. If the answer is "we've used [name] for years and they specialize in [equipment class]," that's an operating broker.
Fifth: how they price permits and escorts. A real heavy-haul broker quotes with permits and escorts rolled into the rate. A broker quoting "$3.50/mi + permits/escorts TBD" is moving risk to you.