To every extent possible, utility lines should not be attached to bridges and separation structures because the proliferation of such lines and maintenance constitutes a hazard to traffic and complicates widening or repair. Attaching utility lines to a highway structure can materially affect the structure, the safe operation of traffic, the efficiency of maintenance, and the overall appearance.

Where other arrangements for a utility line to span an obstruction are not feasible, the department may consider the attachment of such line to a bridge structure. Guidelines are in the Bridge Project Development Manual. Agreements are submitted to the Bridge Division for approval.