24VAC30-151-430: Attachments to bridge structures

A. Utilities may be located on highway grade separation structures across interstate or other controlled access highways, over crossroads, and across major streams or valleys only in extreme cases and with approval of the district structure and bridge engineer in accordance with VDOT specifications.

B. Lines carrying electricity shall be insulated, grounded, and installed in a conduit or pipe to manholes or poles at either end of the structure, as applicable.

C. If a utility is placed on a structure, the installation shall be located beneath the structure's floor between the girders or beams and at an elevation above the bottom flange of the beam. The utility shall not be attached to the outside of the exterior beam, parapets, or sidewalks.

D. Water and sewer attachments shall follow general controls previously listed for providing encasement and allied mechanical protection. In addition, shut-off valves shall be provided outside the limits of the structure.

E. Utilities attached to structures crossing waterways may require a water quality permit.

F. Natural gas and petroleum mains may not be attached to highway structures.