(a) The following shall apply to all facility types: - (i) Design and construction of all carrier pipe and casing pipe shall comply with the most current provisions of federal and state laws, rules and regulations, industry standards, and the provisions of this regulation.
- (ii) Casing of crossing pipelines is not required if the carrier pipe is of heavy wall thickness and the line is cathodically protected. The heavy wall thickness portion of the line, or casing if used, shall extend to the highway right-of-way line to allow for future widening of the roadway.
- (iii) Bore and receiving pits shall be located as close to the highway right-of-way line as possible.
- (iv) Bore and receiving pits shall not be located in the median strips of divided highways where the median is less than 120 feet wide, unless specifically approved by the department's engineer because of extenuating circumstances.
- (v) Abandoned or incomplete bores shall be backfilled and plugged as directed by the department's engineer.
- (vi) Pipeline crossings shall be as near to perpendicular to the roadway centerline as practical.
- (vii) Vent pipes shall be located as close as possible to the right-of-way line. If vent pipes lie within the clear roadway recovery area, they shall be of a breakaway design.
- (viii) Line markers that fall within the clear roadway recovery area shall be of a breakaway design.
- (ix) If support facilities are located immediately adjacent to the highway right-of-way and require periodic access, an approach and gate shall be applied for at the department's district office by separate procedure.
(b) The following shall apply to transmission lines: - (i) Parallel encroachments of transmission lines shall not be allowed within the No Access line of fully access controlled interstate highways.
- (ii) Parallel encroachments of transmission lines shall not be allowed within the median strips of divided highways.
- (iii) Parallel encroachments of transmission lines may be allowed along partially access controlled highways at the discretion of the director or the commission if special and unique circumstances exist, and if such parallel encroachment does not affect the safe operation, design, construction, reconstruction, and maintenance of the highway.
- (iv) When a parallel encroachment is allowed for transmission lines, the line shall be located as close to the highway right-of-way line as possible and no closer to the road bed than 50 feet from the adjacent edge of the traveled way as delineated by the edge-line paint stripe.
- (v) When a parallel encroachment is allowed, the facility shall be marked with line markers every 1,000 feet placed as nearly as practical over the top of the transmission line. A continuous colored tracer tape shall be placed 18 inches above the top of any pipe that falls within the right-of-way.
- (vi) Transmission facilities shall not be attached to any bridge or other highway structure.
- (vii) A Wyoming-licensed professional engineer shall review and approve above-ground transmission support structures used to cross rivers.
- (viii) The minimum depth of cover for parallel transmission lines shall be 48 inches below natural ground and/or below the roadway ditch flow line. The minimum depth of cover for parallel facilities closer to the traveled way than the designated 50 feet minimum shall be 72 inches below natural ground and/or below the roadway ditch flow line. The minimum depth of cover for all crossing transmission lines shall be 120 inches below natural ground and/or below the roadway ditch flow. If the minimum depth of cover is not practical because of natural conditions, the applicant shall consider additional protective measures (such as concrete encasement or using a concrete cap or slab or other protective measures) as part of the license application.
- (ix) Transmission line support facilities such as storage tanks, compressors, valves, clean-out traps, cathodic protection fields and rectifiers, and similar facilities shall not be located inside the highway right-of-way unless extenuating circumstances exist and the director or the commission specifically approves the proposed location.
- (x) If extenuating circumstances or site specific conditions prove that a cathodic protection groundbed must be placed on highway right-of-way to be effective (other than on interstate highways), such an installation may be approved if the applicant presents sufficient justification.
(c) The following shall apply to gathering lines: - (i) Parallel encroachments of gathering lines shall not be placed within the highway right-of-way. The number of gathering lines crossing the highway right-of-way shall be held to a minimum by placing large casing pipes in a few locations and running several gathering lines through them.
- (ii) The minimum depth of cover for crossing gathering lines shall be 36 inches below natural ground and/or below the roadway ditch flow line. If the minimum depth of cover is not practical because of rock, the applicant shall consider additional protective measures (such as concrete encasement or using a concrete cap or slab or other protective measures) as part of the license application.
- (iii) Gathering line support facilities such as storage tanks, valves, clean-out traps, compressors, and similar facilities shall not be located on the highway right-of-way.
- (iv) If extenuating circumstances or site-specific conditions prove that a cathodic protection groundbed must be on highway right-of-way to be effective (other than on interstate highways), such an installation shall be approved if the applicant presents sufficient justification.
- (v) Line markers shall be located as close as possible to the right-of-way line.
(d) The following shall apply to distribution lines: - (i) Distribution systems may be allowed to encroach parallel to, or to cross, the highway right-of-way.
- (ii) The minimum depth of cover for distribution lines, whether in urban or rural areas, shall be 36 inches below natural ground and/or below the roadway ditch flow line. If the minimum depth of cover is not practical because of rock, the applicant shall consider additional protective measures (such as concrete encasement or using a concrete cap or slab or other protective measures) as part of the license application.
- (iii) Neither distribution system pressure regulators, whether in huts or in vaults, nor metering equipment shall be located on highway right-of-way unless extenuating circumstances exist and the department specifically approves the proposed location.