Project Overview

The Central Federal Lands Highway Division of the Federal Highway Administration in cooperation with the Hawaii Department of Transportation is developing a project to reconstruct the 5.7 mile section of the Daniel K. Inouye Highway (formerly Saddle Road) between mileposts 5.3 and 11. This is the final phase to reconstruct the east side of the Saddle Road. The project will follow the existing horizontal alignment from milepost 11 to 8.5, then, diverges southward from the existing road until connecting up with the Puainako Street Extension at approximately milepost 5.3. The roadway width will be upgraded to two 12-foot travel lanes with 8-foot shoulders and also include a climbing lane for most of the length of the project.

Project Details

In Development
Hawaii - Saddle Road, HI

Update 11/1/17:

Major Milestone reached for the Daniel K. Inouye Highway (Formerly Saddle Road). On Tuesday October 10, 2017, a dedication ceremony occurred for the opening of the DKI Highway East Side construction project. The completion of the East Side project is a significant milestone as it signals an end to the original vision of the late Senator Daniel K. Inouye by safely connecting the communities of East and West Hawaii.

The DKI Highway is the most direct cross-island route between east and west Hawaii for business travel, transport of goods and services, tourism, recreation, shopping, and daily commuting. Public use, prior to improvements, had been historically very low due to its extreme substandard and hazardous conditions. In addition to being a cross-island route, the DKI Highway provides the only paved access to the U.S. Department of the Army’s (DOA) Pohakuloa Training Area (PTA), Mauna Kea State Park, and the Mauna Kea and Mauna Loa observatories.

Phased construction of the route began in 2004, with funding leveraged through programs including Fed-Aid (STIP), Discretionary (TIGER, High Priority Projects), State of Hawaii, Ecosystem Management, and Defense Access Road. The completion of the route exemplifies the virtues of a successful partnership between the Federal Highway Administration (Central Federal Land Division and the Hawaii Division Office), the Department of Army, the State of Hawaii Department of Transportation, and several local, state, and federal agencies, to successfully advance joint use (public/military) transportation improvement projects.

Completed road

Dedication ceremony

Update 10/1/17:

The project is nearing completion. An invitation-only, project dedication is planned for early October 2017. Following the dedication, the new roadway will be opened to public traffic.

At this time, and with consideration of the changes, the project is anticipated to be completed within the planned budget.

Update 9/1/17:

A contract modification was recently executed adjusting the contract completion date from August 27, 2017 to September 16, 2017; an increase of 20 calendar days. Contract changes were made to address precautionary measures necessary for containment, treatment and placement of cleared timber affected with the Rapid Ohia Death fungus; additional work on drainage features; and, additional work necessary to fulfill the terms of the land acquisition for the project.

At this time, and with consideration of the changes, the project is anticipated to be completed within the planned budget.

A dedication of the project is planned to occur in early October.

Update 8/1/17:

Operations within the existing alignment (mile markers 8.5 and 11.5):

  • Permanent traffic control including: Layout and installation of rumble strips, thermoplastic pavement markings, and signs
  • Asphalt paving: Top lift at Old Saddle Road connector (mile marker 8.5)

Operations within the new alignment (mile markers 5.5 – 8.5):

  • Excavation and embankment construction: Puainako Connector tie-in
  • Riprap ditches and sediment basins
  • Placement of mulch on ash slopes
  • Installation of waterlines at Country Club Dr.
  • Finish grading and aggregate base
  • Asphalt paving
  • Stone masonry headwalls at access road culverts

Saddle Road Safety Improvements (mile marker 11.5 – Mamalahoa Highway):

  • Installation of centerline rumble strip and new thermoplastic striping
Traffic Management:

As construction operations take place between mile marker 8.5 – 11.5 and the Puainako tie-in (mile marker 5.5 – 6.5), RHB may require single-lane, one-way travel. Delays up to 15 minutes may be instituted from 6:00am – 6:00pm. A pilot car will be utilized in instances where operations span multiple work zones or as conditions require to meet safety needs. FHWA will coordinate temporary traffic control measures for the centerline rumble strip operation (mile marker 11.5 – Mamalahoa Highway) prior to commencement of the work.

Comments None at this time.
Construction Amount More than $25,000,000


Map showing general vicinity of project
View a larger interactive map of the project area.

Project Details
Project # HI SR 200(3)
Location Hawaii - Saddle Road, Hawaii
Status Under Construction

Project Links:

Contact Information

Project Manager

Mike Will
Central Federal Lands Highway Division
Attn: Mike Will
12300 West Dakota Avenue
Lakewood, CO   80228
Phone: 720-963-3647
Fax: 720.963.3596