What is Girder Bridge Structure Frame Trailer ? A Girder Bridge Structure Frame Trailer (GBSTF Trailer) is a type of heavy-duty trailer used to transport extremely large and heavy loads, such as bridge girders, transformers, and other industrial equipment. GBSTF Trailers consist of two main components: A girder bridge frame that spans the length of … Continue reading Girder Bridge Structure Frame Trailer Model Specifications Uses Pros and Cons