Allows certain vehicles transporting construction materials to exceed weight limitations under certain circumstances

HB 1375 allows construction material transporters to carry loads up to 10% heavier than standard weight limits when moving specific materials (like asphalt, concrete, or raw materials such as sand and gravel) between production sites and construction projects. This applies only to non-interstate roads, requires vehicles to be safely maintained and not exceed the manufacturer's weight rating, and prohibits operation on bridges with lower weight limits or above 30 mph on bridges. The bill directly affects construction companies and transporters moving these materials within Missouri. It does not change general weight rules but creates a limited exception for efficiency in the construction supply chain.