I-beam wear assessment trolleys include a first sensor assembly including a first upper block, a first lower block, a first pressure sensor positioned between the first upper block and the first lower block, and at least one first biasing member positioned between the first pressure sensor and either the first upper block or the first lower block of the first sensor assembly, wherein the at least one first biasing member biases the first upper block and the first lower block of the first sensor assembly away from one another.