| 47.40.010 | Improvement and beautification a highway purpose. |
| 47.40.020 | Use of funds authorized. |
| 47.40.030 | Permit to private persons. |
| 47.40.040 | Application for permit, contents. |
| 47.40.050 | Survey -- Report -- Permit. |
| 47.40.060 | Agreement to maintain project. |
| 47.40.070 | Damaging project unlawful. |
| 47.40.080 | Penalty for destroying native flora on state lands, highways, parks. |
| 47.40.090 | Glass bottles along highways -- Collection and removal. |
| 47.40.100 | State adopt-a-highway program. |
| 47.40.105 | Local adopt-a-highway programs. |
NOTES:
City streets, parkways, boulevards, etc.: Title 35 RCW.
State parks and recreation commission may plant trees along highway: RCW 79A.05.030.
Withdrawal of public lands abutting highway: RCW 79A.05.105.