HomeMy WebLinkAbout2022_10_Waipio_Valley_Rd_Improvement_Community_Meeting_Informational_Poster_BoardsRoadway was evaluated for hazards,
including rockfall, slope instability and
erosion, and other indications of
hazardous conditions
Studies indicate roadway hazards
predominantly from rockfall and
unstable soil/vegetation.
Roadway was divided into sections and
mitigation priority was based on the
presence of hazards in each section, field
observations, and road geometry.
HALEY & ALDRICH
REPORT SUMMARY
HALEY & ALDRICH
REPORT SUMMARY
Will consist of safety improvements that can be
quickly addressed, such as removal of
overhanging trees and loose soil in the upper
sections of the roadway (an approximately 735-
foot stretch).
Also includes cleaning out and re-establishing
roadside ditches and diversion berms.
Is entering the design, and construction is
expected to be started by Spring 2023 and is
anticipated to last 5 weeks.
Will require daily road closures during some of
the work because material will fall onto the
roadway during construction and because the
equipment will take up most of the roadway
width.
Hazard Mitigation Phase 1 (Green Outline):
HALEY & ALDRICH
REPORT SUMMARY
Will consist of more intensive mitigation efforts,
such as scaling large rocks from the face of the
slope and installing rockfall mesh.
May also include drainage and road alignment
revisions.
Work may take several months.
Will require daily road closures during some of
the work because material will fall onto the
roadway during construction and because the
equipment will take up most of the roadway
width.
Hazard Mitigation Phase 2 (Yellow and Red
Outline):
HALEY & ALDRICH
REPORT SUMMARY
Sections 6, 8, and 9 also require additional
mitigation (rockfall attenuation fence system).
May also include drainage and road alignment
revisions.
Work may take several months.
Will require daily road closures during some of
the work because material will fall onto the
roadway during construction and because the
equipment will take up most of the roadway
width.
Hazard Mitigation Phase 3 (Red Outline –
Additional Design and Construction Effort):
COUNTY KULEANA
IMPROVE LINE OF SIGHT
INCREASE PULL OUTS
IMPROVE DRAINAGE
REPAVE ROADS
REPLACE GUARD RAILS
UPDATE SIGNAGE ALONG
THE ROAD WAY
SHORT TERM IMPROVEMENTS
LONG TERM IMPROVEMENTS
HAZARD MITIGATION
ALL COUNTY KULEANA