The vertical clearance for overhead power and communication lines above the highway and the lateral and vertical clearance from bridges shall conform with the National Electrical Safety Code and/or with the clearances as shown below, whichever is greater.
type of utility line | lines crossing roadways | longi- tudinal |
Communications and Cable Television | 24' | 20' |
Communications and/or Cable Television joint usage with electrical | 20' | 20' |
electrical | | |
0 - 750 volts | 24' | 24' |
751 - 15,000 volts | 30' | 27' |
15,001 - 50,000 volts | 32' | 32' |
50,001 volts and over | 34' | 32' |
(1) The minimum height of highway crossing shall be measured from the point of the roadway directly under the crossing.
(2) The minimum height of longitudinal lines shall be measured from ground line.
(3) All clearances shall be at State Electrical Construction Code temperature and loading standards, and comply with all other requirements of this code.
[Statutory Authority: Chapter
47.44 RCW. WSR 89-05-022 (Order 119), § 468-34-290, filed 2/10/89. Statutory Authority: 1977 ex.s. c 151. WSR 79-01-033 (DOT Order 10 and Comm. Order 1, Resolution No. 13), § 468-34-290, filed 12/20/78. Formerly WAC 252-04-255.]