23180 Mackinac Island East Bluff Retaining Wall - Drawings.pdf

PDF 6 MB Posted Apr 23, 2025

Attached to: 751/23180. ABG; Mackinac Island East Bluff Retaining Wall
Solicitation number: RFQ-171-250000000373-1
Issued by: Macomb County, Mcbride Village, Michigan

About this file

Written by GovTribe AI · May 12, 2025

The document is a comprehensive set of bidding plans and technical drawings for the Mackinac Island East Bluff Retaining Wall project, prepared by the Michigan Department of Technology, Management and Budget (DTMB) for Mackinac Island State Park. The project involves replacing an existing retaining wall along Huron Road on the East Bluff of Mackinac Island, with detailed civil, structural, and site plans covering approximately 1.63 linear stations. The drawings, dated April 23, 2025, include site location maps, soil boring reports, removal plans, construction details, and retaining wall elevations and sections. The project scope involves site preparation, erosion control, drainage installation, and construction of a new Redi-Rock retaining wall with heights ranging from 7'6" to 10'6".

The technical specifications indicate a complex infrastructure project requiring specialized construction techniques suitable for the challenging terrain of Mackinac Island. The drawings show meticulous planning for soil erosion control, drainage management, and wall stability, with specific attention to existing site conditions and geological characteristics. The project appears to be funded through the state's facilities administration, with OHM Advisors serving as the engineering and design firm. The plans suggest a comprehensive approach to wall replacement that considers environmental constraints, geological considerations, and the preservation of the existing landscape.

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File	Type	Posted
23180 Mackinac Island East Bluff Retaining Wall - Advertisement.pdf	PDF	Apr 23, 2025
23180 Mackinac Island East Bluff Retaining Wall - ProjectManual.pdf	PDF	Apr 23, 2025

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AREA LOCATION

MAP

CHICAGO

MILWAUKEE LAKE

MICHIGAN

DETROIT

LAKE

HURON

SAULT

STE

MARIE

MARQUETTE

HOUGHTON

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SUPERIOR

DULUTH

MINNEAPOLIS

GREEN BAY

ESCANABA

TRAVERSE

CITY

GRAND RAPIDS

LANSING

PROJECT

LOCATION

CHAMPION

AREA LOCATION

MAP

GENERAL NOTES:

I Certify That The Civil Plans Were Prepared Under My Direct Supervision

PROJECT LOCATION MAP

OHM PROJECT No.

DATE:

DTMB File No.

7136-23-0050 2025/04/23

BIDDING PLANS

751/23180.ABG

OWNER:

MACKINAC ISLAND STATE PARK COMMISSION

7023 HURON RD

MACKINAC ISLAND, MI 49757

CONTACT: STEVE BRISSON

BRISSONS@MICHIGAN.GOV

PHONE: 231-436-4100

ARCHITECT/ENGINEER:

OHM ADVISORS

424 HANCOCK STREET

HANCOCK, MI 49930

906.482.0535

PROJECT CONTACT

JARED HYRKAS

1. GENERAL NOTES APPLY TO ALL DRAWINGS.

2. EXCEPT WHERE OTHERWISE INDICATED ON THESE PLANS, OR IN THE CONTRACT DOCUMENTS

AND SPECIFICATIONS CONTAINED HEREIN, ALL MATERIALS AND WORKMANSHIP SHALL BE

ACCORDING TO THE MICHIGAN DEPARTMENT OF TRANSPORTATION STANDARD SPECIFICATIONS

FOR CONSTRUCTION, 2020 EDITION.

3. DO NOT SCALE DRAWINGS. ANY DIMENSIONAL INFORMATION REQUIRED WHICH IS NOT

INDICATED ON DRAWING DIMENSION STRINGS SHALL BE OBTAINED FROM THE ENGINEER.

4. CONTRACTOR SHALL VERIFY ALL EXISTING DIMENSIONS AND CONDITIONS. IF DISCREPANCIES

ARE FOUND, NOTIFY ENGINEER BEFORE PROCEEDING WITH WORK.

5. CONTRACTOR SHALL PAY ALL PERMIT FEES AND FEE REQUIRED FOR ANY PERMIT EXTENSIONS.

6. CONTRACTOR SHALL MAINTAIN THE IMMEDIATE CONSTRUCTION SITE IN A SECURE, CLEAN AND

SAFE MANNER.

7. PROTECTION: CONTRACTORS SHALL BE SOLELY RESPONSIBLE FOR TAKING ALL STEPS

NECESSARY TO PROTECT THE PUBLIC FROM INJURY AND ADJACENT PROPERTY FROM DAMAGE

DURING CONSTRUCTION.

8. REPAIR ALL EXISTING CONSTRUCTION AFFECTED BY NEW WORK TO ITS ORIGINAL CONDITION.

9. THE LOCATION OF ALL PUBLIC UTILITIES SHOWN ON THESE PLANS IS TAKEN FROM THE BEST

AVAILABLE DATA. PURSUANT TO ACT 174 OF THE P.A. OF 2013, AS A CONDITION OF THIS

CONTRACT, NOTICE SHALL BE GIVEN TO MISS DIG PRIOR TO UNDERGROUND WORK TO BE

PERFORMED IN ACCORDANCE WITH THIS CONTRACT. PHONE (800) 482-7171.

MACKINAC ISLAND RETAINING WALL

PROJECT LOCATION

I Certify That The Structural Plans Were Prepared Under My Direct Supervision

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MACKINAC ISLAND STATE PARK

DEPARTMENT OF TECHNOLOGY, MANAGEMENT AND BUDGET

EAST BLUFF RETAINING WALL REPLACEMENT

Sheet List Table Sheet Number Sheet Title http://www.ohm-advisors.com

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TYPICAL TRANSITION HURON ROAD SECTION - PROPOSED STA 0+15 TO 0+25 AND 1+63 TO 1+731

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RETAINING WALL SECTION - 9'-0" to 10'-6" WALL HEIGHT1

REDI-ROCK DRAIN INSTALLATION DETAIL3

RETAINING WALL SECTION - 7'-6" WALL HEIGHT OR LESS2

Sheets and Views

DT COVER

C-001 NOTES

C-090 SOIL BORINGS

C-091 SOIL BORINGS 2

C-120 REMOVAL PLAN

C-130 SITE PLAN

C-501 DETAILS

S-001 STRUCTURAL NOTES

S-101 RETAINING WALL ELEVATION

S-500 RETAINING WALL SECTION

File details come from the government source that posted it. Updated May 12, 2025.