To every extent possible, do not attach utility lines to bridges and separation structures because the proliferation of such lines and their maintenance constitutes a hazard to traffic and complicates widening or repair. TxDOT must review and approve all attachment methods and designs to ensure that they do not compromise the structural integrity of the bridge or the intended function of the guard fence and are not located in such a manner as to interfere with the traveling public or cause a safety concern. TxDOT is responsible for the safe design, installation, and maintenance of everything located within state highway ROW.