Ninole Stream Bridge

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 located on the Mamalahoa Highway, Route 11, at M.P 56.7, the Ninole Stream Bridge, on the Island of Hawaii. The Ninole Stream Bridge is located on the Mamalahoa Highway (Route 11) at mile post 56.7 and approximately 480 feet south of the Punaluu Road intersection, in the Kau District.

The project would improve the safety and reliability of the timber bridge, through rehabilitation or replacement, addressing bridge width, load capacity, bridge railing and transitions, and bridge approaches.

A Final Environmental Assessment (EA) and Finding of No Significant Impact (FONSI) has been prepared pursuant to HRS Chapter 343 (as amended), and Hawaii Administrative Rules Title 11, Chapter 200. The document is available for download by clicking on the "All Documents" link on the left side of this page.

Project Details:

Under Construction
Island of Hawaii, HI

Mamalahoa Highway, Route 11 is a rural minor arterial on the NHS. Ninole Bridge is located at MP 56.7 and approximately 480 south of the Punaluu Road/Mamalahoa intersection. The purpose of the project is to replace the existing deficient timber bridge to meet current design standards for roadway width, load, capacity bridge railing and transitions and bridge approaches.

Update 7/1/19

There is no new information to share at this time.

Update 6/1/19

There is no new information at this time.

Update 5/1/19

HDCC has completed construction of both bypass bridges. Hilea bypass was opened to traffic on March 27, 2019 while Ninole bypass was opened to traffic on March 28, 2019.

HDCC is initiating remaining clearing and grubbing operations on the Makai side of each bridge. Grading operations and demolition of the existing bridges will immediately follow clearing and grubbing.

Relocation of Hawaiian Telcom and Spectrum telecommunication poles and transmission lines are completed at both bridges. Relocation of HELCO utilities will be coordinated in the next 2 – 4 weeks.

Activity Look Ahead
Ninole: Clearing and Grubbing (Makai), Roadway Excavation, Bridge Demolition
Hilea: Clearing and Grubbing (Makai), Roadway Excavation, Bridge Demolition

Traffic Management
HDCC transitioned public traffic to bypass bridges on 03/26/19 and 03/27/19. Appropriate TTC signage, pavement markings, and devices have been installed according to the accepted Traffic Control Plan and MUTCD. The speed limit at each bypass is reduced to 25 MPH.

Update 3/1/19

There is no new information to share at this time.

Update 2/1/19

Construction: The project was awarded to Hawaiian Dredging on April 9, 2018. The project Notice to Proceed was issued on October 11, 2018. With a contract duration of 336 days from issuance of Notice to Proceed, the contract completion date is September 12, 2019. The contractor has mobilized to the project site, initiated clearing operations, and is currently working on the construction of a bypass road.

Update 12/1/2018

Construction: There is no new information at this time.

Construction Amount Between $5,000,000 and $10,000,000


View a larger interactive map of the project area.

Project Details
Project # HI STP SR11(2)
Project Name Ninole Stream Bridge
Location Island of Hawaii
Status Under Construction

Contact Information

Project Manager: Mike Will
Phone: 720-963-3647

Federal Highway Administration
Central Federal Lands Highway Division
12300 West Dakota Avenue
Lakewood, CO 80228