The state will spend $600,000 for safety improvements to Mamalahoa Highway in the Puuwaawaa area of Hawaii island. 

The improvements, scheduled to start in July and be completed in December 2014, will include the design of an underground drainage system to help rain runoff from flowing across the highway. The system will include drain lines, grated drop inlets and a drainage basin. Related improvements in the area include the design for a retaining wall and realigning the roadway as necessary to improve safety. 

State Rep. Cindy Evans (D, North Kona, South Kohala) said: "The improvement in the drainage system to help prevent rain runoff is part of a series of improvements that have been made in this section of the highway. The State Department of Transportation has added guardrails and lowered the speed limit; these new improvements will only help contribute to making this area of the highway safer."