751_25246_RLO Addendum 02_Marsh Creek.pdf

751_25246_RLO Addendum 02 Page 1 of 1

ADDENDUM NO. 2

DATE: August 27, 2026

PROJECT: St. Helen Bridge over Marsh Creek

OWNER: State of Michigan Department of Natural Resources

DTMB FILE #: 751/25246.RLO

BID DATE: Wednesday, September 9, 2026

The following shall be incorporated into the Contract Documents dated August 12, 2026.

GENERAL

1. Pre-Bid Meeting Sign-In Sheet (attached)

2. Construction staging will be allowed in the parking lot (meeting location for pre-bid meeting).

Restore site to same or better condition after construction is complete including vegetation.

3. Improvement made to the access road for use during construction do not have to be removed after construction.

4. Due to concerns with oak wilt in the spring and early summer months, PRD will trim/cut the oak along the trail corridor in the fall of 2026, so it does not pose an access issue during construction.

PROJECT MANUAL

1. Technical Specifications/Special Provisions: Add SESC Implementation Plan and Checklist (attached)

DRAWINGS

1. Add Standard Detail sheets 9-16 as listed in the index (attached)

2. Add Note to Sheet 4: Remove existing timber retaining walls, fabric and silt fence in each quadrant. (not re-issued)

CLARIFICATIONS

None

End of Addendum No. 2

MICHIGAN DEPARTMENT

OF

NATRUAL RESOURCES

SPECIAL PROVISION

FOR

SOIL EROSION AND SEDIMENTATION

CONTROL IMPLEMENTATION PLAN

MDNR/OHM 1 of 4 08/2026

a. General. Perform work in accordance with Section 208 of the Michigan Department of Transportation, 2020 Standard Specifications for Construction and the Michigan Department of Management and Budget’s Soil Erosion and Sedimentation Control Guidebook, including any supplemental specifications, except as modified herein. Any discrepancies between the MDOT and DTMB requirements shall default to the more restrictive requirement as determine by the Professional.

This work includes writing, submitting, implementing and maintaining a Soil Erosion and Sedimentation Control (SESC) Implementation Plan.

Soil erosion and sedimentation control (SESC) will be a priority during and after all phases of construction. Following the award of the contract, and prior to the start of earthwork, prepare and issue for approval a “SESC Implementation Plan", which indicates the contractor’s intended implementation of SESC on the project including a schedule and sequence. Attached is a checklist to provide assistance in writing the plan. The DTMB SESC Program, upon approval of the implementation plan, will issue to the contractor an Authorization to Proceed with Earth Change form to be posted at the jobsite. Soil erosion and sedimentation control measures included in the construction contractor’s approved implementation and sequencing plan, shall be placed and functioning before the soil is disturbed. All temporary control measures shall remain in place and be maintained until the impacted areas are permanently stabilized.

Identify off-site borrow and waste disposal areas as part of the implementation plan. The same consideration for controlling erosion and off-site sedimentation will apply to the borrow and waste disposal areas as applied to construction areas. When the contractor selects an off-site location for the borrow or waste disposal area, secure a SESC permit from the Authority having jurisdiction (AHJ) for approval prior to use of area(s). Ensure that appropriate SESC measures are implemented when off-site areas are permitted by the AHJ.

If DTMB is not the AHJ, provide to the SESC Program a copy of the Part 91 permit received from the AHJ before any off-site earthwork commences.

DTMB’s SESC Program will review the SESC plans to assure they include at a minimum all information required in R323.1703 of Part 91. As a minimum, provide temporary control measures complying with SESC control measures specified on the plans and the attached silt fence detail and specifications.

DTMB SESC Program staff include:

Christopher J. McGarry, SESC Program Manager Phone: 517.388.3045

Email: mcgarryc@michigan.gov DTMB Field Representative – Assigned to projects and identified at the preconstruction meeting

MDNR/OHM 2 of 4 08/26

Should anyone have questions regarding the procedures associated with the incorporation of soil erosion and sedimentation control measures into DTMB projects, please feel free to contact the DTMB SESC Program Manager.

b. Construction. All phases of construction and associated earthwork shall be undertaken by the Contractor as scheduled and in accordance with the SESC implementation plan. The SESC Program staff is responsible for ensuring that all SESC measures are properly installed in a timely manner, maintained, and are effectively controlling erosion and off-site sedimentation. Based on site conditions, the SESC Program inspection team may make minor adjustments to the overall SESC strategy such as relocating or adding silt fence, check dams, or modifying inlet protection controls.

Prior to starting work, the SESC Program Manager will notify the appropriate Part 91 County/Municipal Enforcing Agency of the proposed construction project including off-site borrow and waste disposal areas.

c. Inspections. Regular and post-rain event inspections will be conducted by DTMB Field Representatives with support from the SESC Program Manager. Then Contractor shall continuously monitor the project site and adjacent areas for ineffective SESC measures. At least weekly and after every significant rain (runoff leaves the site) the DTMB Field Representative, accompanied by a Contractor’s representative, will inspect all SESC measures on and off the site and document his/her observations on a SESC Inspection Report Form developed by the DTMB. The inspection report shall document at a minimum the following:

1) Date of Inspection

2) Name of inspector

3) Name of company representative

4) General weather conditions within last 48 hours

5) Is there a potential for sediment leaving the site?

6) Has sediment left the site since the last report? (Explain in detail)

7) SESC Controls

(a) Are controls installed per plan?

(b) Are the controls effective?

(c) Do the controls require maintenance?

8) Necessary corrective actions and information regarding who was notified and time limits for compliance.

Corrective actions shall be completed within 48 hours of discovery for routine maintenance items including but not limited to removing sediment from behind silt fences or check dams, replacing or adding silt fence, seeding and mulching small areas, and street sweeping.

Other necessary maintenance or corrective actions shall be completed as soon as possible but never more than five (5) days after detection.

SPECIAL NOTE: If sediment is impacting or there is a potential for sediment to impact lakes, streams, and wetlands, corrective actions will be completed within 24 hours.

d. Enforcement. Schedule of values for construction shall include separate line items for the sequencing of construction, installation, maintenance and removal of temporary

MDNR/OHM 3 of 4 08/26

SESC measures, and installation and maintenance of permanent SESC measures. The SESC Program and SESC inspection team will review and approve any payment application where the contractor is invoicing for SESC work performed. If the contractor fails to install, maintain or remove the controls, the Department of Technology, Management and Budget, with proper notification, will consider stopping work or directing the work to another company and paying with the monies identified in the schedule of values. In the event the cost to remediate exceeds the contracted amount, the original bonding company will be contacted regarding the shortfall.

DTMB may impose fines of at least $500 per day and assess actual damage costs if the contractor refuses to comply with SESC requirements and corrective measures. For bonded projects, the Surety Company will be held responsible for these costs in the event the contractor refuses to perform or is found to be in default.

Enforcement actions are as follows:

1. SESC Program inspects and documents SESC measures and effectiveness using SESC Inspection Report Form. Copies distributed to the Architect/Engineer, Region Supervisor, and SESC Program Manager.

2. If SESC measures are observed to be ineffective, SESC Program will verbally direct the contractor to take appropriate corrective measures and document the action taken.

Within 24 hours of issuing the verbal directions, written documentation shall be provided to the contractor.

3. Within 48 hours (24 hours if impacting waterways) of discovery and verbal notification, the contractor shall implement remedial actions. The SESC Program shall provide written documentation to the DTMB Region Supervisor and SESC Program Manager that corrective measures have been implemented by the contractor.

4. If the contractor fails to implement remedial actions within the specified time, DTMB (SESC Program Manager) shall provide written notice, sent certified mail, of “ Notice of Noncompliance with Part 91 of 1994 PA 451". This notification will outline fines and penalties to be imposed if corrective actions are not undertaken within a specified period of time (time dependent upon nature or the severity of violation).

5. For bonded projects the Surety Company shall be notified by a certified copy of the Notice of Noncompliance.

6. Continued inaction (after a 2nd notice regarding the same issue) by the contractor shall result in DTMB (Director of Design and Construction Division) issuing a Stop Work Order.

This order shall specifically identify where work is to cease, and identify a specified period of time that will be granted to the contractor before a third party contractor is hired by DTMB or the Surety Company to perform the required remediation.

7. Multiple Notice of Noncompliance citations (more than three for the same issue) will result in DTMB (Director of Design and Construction Division) initiating actions to terminate the contract for material breach.

MDNR/OHM 4 of 4 08/26

Site work, restoration, and erosion controls will be measured and paid for separately.

e. Measurement and Payment. The completed work, including writing the plan, scheduling and sequencing, and securing approval will be paid for as part of the Lump Sum contract.

Rev 8/22

CHECKLIST FOR CONTRACTOR’S SOIL EROSION

AND SEDIMENTATION CONTROL IMPLEMENTATION PLAN

For projects that include earth changes or disturb existing vegetation.

DEPARTMENT OF TECHNOLOGY, MANAGEMENT & BUDGET

STATE FACILITIES ADMINISTRATION, DESIGN AND CONSTRUCTION DIVISION

SOIL EROSION & SEDIMENTATION CONTROL PROGRAM

PROJECT NAME: Click or tap here to enter text.

PROJECT LOCATION: Click or tap here to enter text.

PROJECT FILE NUMBER: Click or tap here to enter text.

CONTRACTOR CONTACT AND MAILING INFORMATION: Click or tap here to enter text.

Prior to the start of earthwork, the Contractor must submit a Soil Erosion and Sedimentation Control (SESC) Implementation Plan to the Department of Technology, Management and Budget, Soil Erosion and Sedimentation Control Program. The intent of this plan is to ensure that the Contractor has reviewed and understands the SESC provisions within the plans and specifications. The following checklist will provide Contractors with assistance in creating the SESC Implementation Plan.

Acreage of disturbed earth: Click or tap here to enter number of acres.

Nearest lake or stream: Click or tap here to enter water body.

The SESC Implementation Plan must include:

1. ☐ A written plan or letter demonstrating:

☐ The Contractor’s means and methods for the implementation of SESC provisions included within the plans and specifications and compliance with the provisions of Part 91 of PA 451 of 1994, as amended

☐ The Contractors plan for dust control

☐ The Contractor’s plan for inspection and maintenance of temporary soil erosion and sedimentation controls

2. ☐ A map, location plan, drawing, or amended copy of the project SESC or grading plan showing:

☐ Project location Map with scale: 1” = 200’ or less - include a legal description of the property (town, range, section, quarter-quarter section)

☐ Distance to lakes, streams or wetlands

☐ Soil type

☐ Predominant land features

☐ Existing & final contours

☐ Existing, construction & final drainage patterns (including dewatering facilities)

☐ Limits of proposed earth change

☐ Site boundaries / property lines

☐ Schedule/ phasing of construction and installation of SESC control measures

☐ Location and description for installing and removing all temporary (during construction) SESC control measures

Checklist for Soil Erosion and Sedimentation Control

☐ Description and location of all proposed permanent (post construction) SESC control measures

☐ Maintenance program for all permanent SESC measures and designation of responsible party for maintenance.

☐ The locations of any stockpiles of soil associated with the project

☐ The temporary SESC controls associated with stockpiles of soil

☐ The Contractor’s suggested or proposed additions or relocations of any temporary or permanent SESC controls associated with the project plans and specifications (subject to approval by engineer and DTMB)

☐ Location of site entrances, exits and vehicle routes

☐ Location of site superintendent’s/project manager’s site trailer or office (for SESC Inspector check-in)

3. ☐ A schedule for the installation and removal of temporary controls and the installation of permanent soil erosion and sedimentation controls in relation to the overall construction schedule.

Submit the above items to: DTMB-SESC@MICHIGAN.GOV

Upon approval of the contractor’s plan, an “Authorization to Proceed with Earth Change” will be issued by the DTMB SESC Unit.

WOOD POST STEEL POST ELEVATION SHOWING POST SPACING

GUARDRAIL, TYPE A

ELEVATION SHOWING POST SPACING

GUARDRAIL, TYPE B (OR BD)

( WOOD POST )

GROUND LINE

(TYP.)

SPLICE BOLT

6"

WOOD LINE POST

6" x 8"

(TYP.)

SPLICE BOLT

UNDER NUT

ROUND WASHER

POST BOLT WITH

8"

UNDER NUT

ROUND WASHER

POST BOLT WITH

GROUND LINE

AND TYPICAL POST SPACING

EFFECTIVE BEAM ELEMENT LENGTH

12'-6"

* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB

GROUND LINEOPTIONAL

* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB

GROUND LINE

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

POST SPACING

6'-3" TYPICAL

6" x 8" WOOD LINE POST

LINE

GROUND

HINGE POINT

SHOULDER

COATED NAIL

3" LONG HOT-DIP ZINC

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TOE NAIL WOOD BLOCK TO

SHOULDER

NORMAL

2'-0" ***

8"8"(TYP.)

SPLICE BOLT

** 5'-0" OR AS SPECIFIED ON PLANS

STEEL LINE POST

W6 x 9 OR W6 x 8.5

USE 8'-0" POST WITH THE ADDITIONAL LENGTH EMBEDDED.

THAN 2'-0" AND THE EMBANKMENT (OR MEDIAN) SLOPE IS STEEPER THAN 1:10,

IF THE OFFSET FROM THE FACE OF POST TO THE SHOULDER HINGE POINT IS LESS***

FOR PAVED SHOULDER WIDTHS OF AT LEAST 12', USE 3'-0". **

WOOD OFFSET BLOCK

6" x 8"

UNDER NUT

ROUND WASHER

POST BOLT WITH

8" 8" 8"

NAIL

HOT-DIP ZINC COATED

A MINIMUM 3" LONG

TO WOOD POST WITH

TOE NAIL WOOD BLOCK

SLOPE

(OR MEDIAN)

EMBANKMENT

TYPE BD

WASHER UNDER NUT

POST BOLT WITH ROUND

FOR TYPE BD ONLY

DOUBLE SIDED SHOWN

ELEVATION SHOWING POST SPACING

GUARDRAIL, TYPE B (OR BD)

( STEEL POST )

GROUND LINE

POST SPACING

6'-3" TYPICAL

(TYP.)

SPLICE BOLT

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB

STEEL LINE POST

W6 x 9 OR W6 x 8.5

LINE

GROUND

HINGE POINT

SHOULDER

SHOULDER

NORMAL

2'-0" ***

** 5'-0" OR AS SPECIFIED ON PLANS

WASHER UNDER NUT

POST BOLT WITH ROUND

SLOPE

(OR MEDIAN)

EMBANKMENT

FOR STEEL POST

WOOD OFFSET BLOCK

ROUTED 6" x 8"

FOR TYPE BD ONLY

DOUBLE SIDED SHOWN

USE 8'-0" POST WITH THE ADDITIONAL LENGTH EMBEDDED.

THAN 2'-0" AND THE EMBANKMENT (OR MEDIAN) SLOPE IS STEEPER THAN 1:10,

IF THE OFFSET FROM THE FACE OF POST TO THE SHOULDER HINGE POINT IS LESS***

FOR PAVED SHOULDER WIDTHS OF AT LEAST 12', USE 3'-0". **

ELEMENT

BEAM

POST BOLT

FOR STEEL POST

ROUTED 6" x 8" WOOD BLOCK

2" TO 3"

"8

IN LENGTH)

OF POSTS GREATER THAN 6'-0"

BOTTOM(UP TO 4 OPTIONAL HOLES IN

" DIA. GALVANIZING HOLE(S)16

" OR 4

NUT

ROUND WASHER

STEEL LINE POST

W6 x 9 OR W6 x 8.5

(OPTIONAL)

GALVANIZING HOLE

" DIA. 16

" OR 4

2" TO 3"

"8

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR

SECT

R-60-J

SHEET

16 1 OF FHWA APPROVAL

(SPECIAL DETAIL) 01/29/2024

PLAN DATE

GUARDRAIL, TYPES A, B, BD, T, TD, MGS-8, & MGS-8D

STANDARD PLAN FOR

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR R-60-J

SHEET

16 2 OF FHWA APPROVAL

APPROVED BY:

APPROVED BY:

DIRECTOR, BUREAU OF DEVELOPMENT

FIELD SERVICES DIRECTOR, BUREAU OF

TOP

SIDEFRONT

WOOD OFFSET BLOCKS FOR GUARDRAIL, TYPE B AND TYPE BD

FOR USE ON WOOD POSTS

TOP

FRONT SIDE

FOR USE ON STEEL POSTS

WOOD POST STEEL POST

BEAM ELEMENT SPLICE DETAILS

"8

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"2 11'-0

2"2" "4 14"4

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6"

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2"2" "4 14"4

POST BOLT SLOT

"2

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(TYP.)

SPLICE BOLT SLOT

"8 1 x 132

ELEVATION SHOWING POST SPACING

GUARDRAIL, TYPE T (OR TD)

( WOOD POST )

ELEVATION SHOWING POST SPACING

GUARDRAIL, TYPE T (OR TD)

( STEEL POST )

* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB

GROUND LINE

POST SPACING

6'-3" TYPICAL

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

6" x 8" WOOD LINE POST

HINGE POINT

SHOULDER

LINE

GROUND

2'-0" ***

8"8"(TYP.)

SPLICE BOLT

SHOULDER

NORMAL

(TYP.)

SPLICE BOLT

GROUND LINE

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6'-3" TYPICAL

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB

** 5'-0" OR AS SPECIFIED ON PLANS

STEEL LINE POST

W6 x 9 OR W6 x 8.5

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(TYP.)

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SHOULDER

LINE

GROUND

2'-0" ***

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** 5'-0" OR AS SPECIFIED ON PLANS

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(OR MEDIAN)

EMBANKMENT

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6" x 8"

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ROUND WASHER

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8" 8" 8"

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(OR MEDIAN)

EMBANKMENT

WASHER UNDER NUT

POST BOLT WITH ROUND

FOR TYPE TD ONLY

DOUBLE SIDED SHOWN

FOR TYPE TD ONLY

DOUBLE SIDED SHOWN

TYPE TD

USE 8'-0" POST WITH THE ADDITIONAL LENGTH EMBEDDED.

THAN 2'-0" AND THE EMBANKMENT (OR MEDIAN) SLOPE IS STEEPER THAN 1:10,

IF THE OFFSET FROM THE FACE OF POST TO THE SHOULDER HINGE POINT IS LESS***

FOR PAVED SHOULDER WIDTHS OF AT LEAST 12', USE 3'-0". **

USE 8'-0" POST WITH THE ADDITIONAL LENGTH EMBEDDED.

THAN 2'-0" AND THE EMBANKMENT (OR MEDIAN) SLOPE IS STEEPER THAN 1:10,

IF THE OFFSET FROM THE FACE OF POST TO THE SHOULDER HINGE POINT IS LESS***

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IN LENGTH)

OF POSTS GREATER THAN 6'-0"

BOTTOM(UP TO 4 OPTIONAL HOLES IN

" DIA. GALVANIZING HOLE(S)16

13" OR 4

Michigan Department of Transportation

SHEET

16 3 OF FHWA APPROVAL

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR R-60-J

SHEET

16 4 OF FHWA APPROVAL

/4

8' -0

/4

5/

4' -8

/1

6"

TOP

SIDEFRONT

WOOD OFFSET BLOCKS FOR GUARDRAIL, TYPE T AND TYPE TD

FOR USE ON WOOD POSTS

TOP

FRONT SIDE

FOR USE ON STEEL POSTS

BLOCK AND POST CONNECTION DETAILS

GUARDRAIL, TYPE B

GUARDRAIL, TYPE T

GUARDRAIL, TYPE B

GUARDRAIL, TYPE T

WOOD POST STEEL POST

THRIE BEAM ELEMENT SPLICE DETAILS

TO WOOD OFFSET BLOCK

CONNECTING STEEL POST

POST BOLT

ROUTED WOOD OFFSET BLOCK

CONNECTING STEEL POST TO

POST BOLT

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ROUTED WOOD OFFSET BLOCK

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POST BOLT

TO WOOD OFFSET BLOCK

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POST BOLT

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3"3"

6"6"

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(SEE NOTES ON SHEET 16 OF 16)

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Michigan Department of Transportation

SHEET

16 OF 5FHWA APPROVAL

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR R-60-J

SHEET

16 OF 6FHWA APPROVAL

ROUTED WOOD OFFSET BLOCK

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POST BOLT

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TO WOOD OFFSET BLOCK

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STEEL POST�

BLOCK AND POST CONNECTION DETAILS

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LINE

GROUND

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NORMAL

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8"

** 5'-8" OR AS SPECIFIED ON PLANS

USE 9'-0" POST WITH THE ADDITIONAL LENGTH EMBEDDED.

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IF THE OFFSET FROM THE FACE OF POST TO THE SHOULDER HINGE POINT IS LESS***

FOR PAVED SHOULDER WIDTHS OF AT LEAST 12', USE 3'-8". **

( WOOD POST )

8"

TOP

SIDEFRONT

FOR USE ON WOOD POSTS

TOP

FRONT SIDE

FOR USE ON STEEL POSTS

3"3"

6"6"

"4

3"

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GUARDRAIL, TYPE MGS-8 (OR MGS-8D)

STEEL LINE POST

W6 x 9 OR W6 x 8.5

GUARDRAIL, TYPE MGS-8 (OR MGS-8D)

WOOD OFFSET BLOCKS FOR GUARDRAIL, TYPE MGS-8 AND TYPE MGS-8D

(SEE NOTES ON SHEET 16 OF 16)

HINGE POINT

SHOULDER

UNDER NUT

ROUND WASHER

POST BOLT WITH

SHOULDER

NORMAL

2'-8" ***

** 5'-8" OR AS SPECIFIED ON PLANS

FOR STEEL POST

WOOD OFFSET BLOCK

ROUTED 6" x 8"

SLOPE

(OR MEDIAN)

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WOOD OFFSET BLOCK

6" x 8"

UNDER NUT

ROUND WASHER

POST BOLT WITH

8" 8" 8"

NAIL

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A MINIMUM 3" LONG

TO WOOD POST WITH

TOE NAIL WOOD BLOCK

SLOPE

(OR MEDIAN)

EMBANKMENT

WASHER UNDER NUT

POST BOLT WITH ROUND

NAIL

HOT-DIP ZINC COATED

A MINIMUM 3" LONG

TO WOOD POST WITH

TOE NAIL WOOD BLOCK

TYPE MGS-8D

USE 9'-0" POST WITH THE ADDITIONAL LENGTH EMBEDDED.

THAN 2'-8" AND THE EMBANKMENT (OR MEDIAN) SLOPE IS STEEPER THAN 1:10,

IF THE OFFSET FROM THE FACE OF POST TO THE SHOULDER HINGE POINT IS LESS***

FOR PAVED SHOULDER WIDTHS OF AT LEAST 12', USE 3'-8". **

TYPE MGS-8D ONLY

SHOWN FOR

DOUBLE SIDED

TYPE MGS-8D ONLY

SHOWN FOR

DOUBLE SIDED

" DIA. HOLE4

"8

"8 1±

LINE

GROUND

ELEMENT

BEAM

POST BOLT

NUT

ROUND WASHER

FOR STEEL POST

ROUTED 6" x 8" WOOD BLOCK

STEEL LINE POST

W6 x 9 OR W6 x 8.5

(OPTIONAL)

GALVANIZING HOLE

" DIA. 16

13" OR 4

2" TO 3"

2" TO 3"

"8

"8

IN LENGTH)

OF POSTS GREATER THAN 6'-0"

BOTTOM(UP TO 4 OPTIONAL HOLES IN

" DIA. GALVANIZING HOLE(S)16

13" OR 4

Michigan Department of Transportation

SHEET

16 OF 7FHWA APPROVAL

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR R-60-J

SHEET

16 OF 8FHWA APPROVAL

6'-3" TYPICAL POST SPACING

12'-6" EFFECTIVE BEAM ELEMENT LENGTH

GROUND LINE

TOP OF RAIL

* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB

GROUND LINE

GROUND LINE

MGS POST�

MGS POST�

GUARDRAIL, TYPE MGS-8 (OR MGS-8D)

ELEVATION SHOWING POST SPACING FOR

GUARDRAIL, TYPE MGS-8 OR MGS-8D

GUARDRAIL, TYPE MGS-8 OR MGS-8D

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

BEAM ELEMENT LENGTH

" EFFECTIVE2

19'-4

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

" HEIGHT TRANSITION2

134'-4

W-BEAM ELEMENT

STANDARD (12'-6")

BEAM ELEMENT

")2

1MGS (9'-4

W-BEAM ELEMENT

STANDARD (12'-6")

BEAM ELEMENT LENGTH

" EFFECTIVE2

19'-4

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

" HEIGHT TRANSITION2

128'-1

LENGTH

EFFECTIVE

6'-3"

W-BEAM ELEMENT

STANDARD (12'-6")

BEAM ELEMENT

")2

1MGS (9'-4

POST SPACING

6'-3" TYPICAL

POST SPACING

6'-3" TYPICAL

GROUND LINE

GROUND LINE

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MGS POST�

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

BEAM ELEMENT LENGTH

" EFFECTIVE2

19'-4

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

" HEIGHT TRANSITION2

134'-4

W-BEAM ELEMENT

STANDARD (12'-6")

BEAM ELEMENT

")2

1MGS (9'-4

W-BEAM ELEMENT

STANDARD (12'-6")

BEAM ELEMENT LENGTH

" EFFECTIVE2

19'-4

BEAM ELEMENT LENGTH

12'-6" EFFECTIVE

" HEIGHT TRANSITION2

128'-1

LENGTH

EFFECTIVE

6'-3"

POST SPACING

6'-3" TYPICAL

POST SPACING

6'-3" TYPICAL

BEAM ELEMENT

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1MGS (9'-4

W-BEAM ELEMENT

STANDARD (12'-6")

GUARDRAIL APPROACH TERMINAL TYPE 1B, 2B, OR 3B

GUARDRAIL, TYPE B, GUARDRAIL, TYPE BD, OR

GUARDRAIL, TYPE MGS-8 (OR MGS-8D) TO

ELEVATION SHOWING TRANSITION DETAIL FOR CONNECTING

GUARDRAIL ANCHORAGE, BRIDGE DETAIL A1, T1, T4 OR T6

GUARDRAIL ANCHORAGE, MEDIAN,

GUARDRAIL, TYPE T, GUARDRAIL, TYPE TD,

GUARDRAIL, TYPE MGS-8 (OR MGS-8D) TO

ELEVATION SHOWING TRANSITION DETAIL FOR CONNECTING

GUARDRAIL APPROACH TERMINAL TYPE 2M OR TYPE 3M

GUARDRAIL, TYPE B (OR TYPE BD) TO

ELEVATION SHOWING TRANSITION DETAIL FOR CONNECTING

GUARDRAIL APPROACH TERMINAL TYPE 2M OR TYPE 3M

GUARDRAIL, TYPE T (OR TYPE TD) TO

ELEVATION SHOWING TRANSITION DETAIL FOR CONNECTING

GUARDRAIL POST�

GUARDRAIL POST�

GUARDRAIL POST�

GUARDRAIL POST�

TRANSITION

THRIE BEAM

SYMMETRICAL

TRANSITION

THRIE BEAM

SYMMETRICAL

GUARDRAIL, TYPE B OR TYPE BD GUARDRAIL APPROACH TERMINAL TYPE 2M OR TYPE 3M

GUARDRAIL, TYPE T OR TYPE TD GUARDRAIL APPROACH TERMINAL TYPE 2M OR TYPE 3M

GUARDRAIL ANCHORAGE, BRIDGE DETAIL __

GUARDRAIL ANCHORAGE, MEDIAN

GUARDRAIL, TYPE __

GUARDRAIL APPROACH TERMINAL TYPE __

GUARDRAIL, TYPE __

STANDARD PLAN R-62-SERIES

TYPE 2M SEE

STANDARD PLAN R-63-SERIES

TYPE 3M SEE

STANDARD PLAN R-62-SERIES

TYPE 2M SEE

STANDARD PLAN R-63-SERIES

TYPE 3M SEE

Michigan Department of Transportation

SHEET

16 OF 9FHWA APPROVAL

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR R-60-J

SHEET

16 OF 10FHWA APPROVAL

/4

INVERTED

ASSYMETRICAL

SECTION THROUGH THRIE BEAM ELEMENT

(FOR GUARDRAIL, TYPE T AND TD)

"16

3 "16

"4

"8

-0 +

TOLERANCE

"32

" R16

(TYP.)

"16

10°

" R8

(TYP.)

(TYP.)

" R16

SECTION THROUGH BEAM ELEMENT

"32

"16

3 "16

"4

"8

-0 +

TOLERANCE

" R8

(TYP.)

(TYP.)

" R16

SYMMETRICAL

�ABOUT

" R16

(TYP.) N

E

U T

R A

L A

X

IS

"16

10°

BEAM ELEMENT SPLICE DETAILS

"2 11'-0

2"2" "4 14"4

(TYP.)

SPLICE BOLT SLOT

"8 1" x 132

SLOTTED HOLE�

SLOTTED HOLE

"2

1" x 24

"4 14 "4

14 2""4 14"4

142"

"2 13'-1

OF POST BOLT SLOTS�

"2 13'-1 "2

13'-1

(TYP.)

SPLICE BOLT SLOT

"8 1" x 132

(TYP.)

POST BOLT SLOT

"2 1" x 24

10'-5"

FRONT ELEVATION OF BEAM ELEMENT

"4 14 "4

14 2"

"2 113'-6

"4 14"4

142"

"2 13'-1

OF POST BOLT SLOTS�

"2 13'-1 "2

13'-1 "2 13'-1

(TYP.)

SPLICE BOLT SLOT

"8 1" x 132

(TYP.)

POST BOLT SLOT

"2 1" x 24

") BEAM ELEMENT2

1FRONT ELEVATION OF MGS (9'-4

FRONT ELEVATION OF THRIE BEAM ELEMENT

"4 14 "4

14 2"

"2 113'-6

"4 14"4

142"

OF POST BOLT SLOTS�

(TYP.)

SPLICE BOLT SLOT

"8 1" x 132

(TYP.)

POST BOLT SLOT

"2 1" x 24

"2 13'-1 "2

13'-1 "2 13'-1 "2

13'-1

Michigan Department of Transportation

SHEET

16 OF 11FHWA APPROVAL

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR R-60-J

SHEET

16 OF 12FHWA APPROVAL

TO GUARDRAIL, TYPE BD (OR TYPE TD)

DETAIL SHOWING TRANSITION FROM GUARDRAIL, TYPE B (OR TYPE T)

SPLICE BOLT AND POST BOLT

AT BEAM ELEMENT SPLICE POSTS AND AT INTERMEDIATE POSTS

POST BOLTS, SPLICE BOLTS AND WASHERS

150'

METAL TAG

ROUND WASHER NUT

STANDARD WIDTH VARIABLE WIDTH (FIELD BEND)

M

A X

OF TRAFFIC

DIRECTION

OF TRAFFIC

DIRECTION

(TWO REQUIRED FOR TYPE TD)

(ONE REQUIRED FOR TYPE BD)

POST BOLT LENGTH 2'-10"

PAY ITEM: GUARDRAIL, TYPE BD (OR TD) GUARDRAIL, TYPE B (OR T)

PAY ITEM EACH SIDE:

APPROX. 6'-3"

OFFSET BLOCKS (TYPE TD) 6" x 1'-0" x 1'-10"

OFFSET BLOCKS (TYPE BD) 6" x 1'-0" x 1'-3"

OFFSET BLOCKS (TYPE TD) 6" x 9" x 1'-10"

OFFSET BLOCKS (TYPE BD) 6" x 9" x 1'-3"

(TWO REQUIRED FOR TYPE TD)

(ONE REQUIRED FOR TYPE BD)

POST BOLT LENGTH 2'-4"

POST

BLOCK

OFFSET

POST BOLTS

NO. LENGTH

SPLICE BOLTS WASHERS

WOOD

WOOD

STEEL

STEEL

WOOD

STEEL

WOOD

STEEL

WOOD

STEEL

(ROUND)

N O

T N

E E

D E

D A

T I

N T

E R

M E

D

IA

T E

P O

S T

S

WOOD

WOOD

WOOD

WOOD

WOOD

WOOD

WOOD

WOOD

A

B

BD

T

TD

REQ'D (NO. REQ'D)(NO. REQ'D)

TYPE

GUARDRAIL

N/A

N/A

"2

"2

18"

2"

"2

"2

"2

"2

* "2

18"

" LONG)4

(1

" BEYOND NUT. 2

EXTEND MORE THAN

(OR TYPE T) TO GUARDRAIL, TYPE BD (OR TYPE TD). POST BOLTS SHALL NOT

* EXCEPT AS SPECIFIED ON DETAIL SHOWING TRANSITION FROM GUARDRAIL, TYPE B

AND 8 ON TYPE B END).

THRIE BEAM TRANSITIONS REQUIRE 20 SPLICE BOLTS EACH (12 0N TYPE T END

" (SPLICE BOLT)4

SEE CHART (POST BOLT)

"32

"16

1 - "

"8

RECESS ONE OR BOTH SIDES

" DEEP16

" DIA. x 16

"64

" DIAMETER4

" DIAMETER16

"4

1 "16

0.012" THICK

" DIA. HOLE4

1" 3"

"8

4" ±

METAL TAG

" HIGH ON THE 4

EMBOSSED

CURVED GUARDRAIL RADIUS

FOR CURVED GUARDRAIL WITH RADIUS OF 150' OR LESS

"4

4 "4

4 2""4

4"4

42"

"2

7'-3

"2

3'-1

SPLICE BOLT SLOT (TYP.)

"8

" x 132

POST BOLT SLOT (TYP.)

"2

" x 24

ASYMMETRICAL THRIE BEAM TRANSITIONS

NOTE: ASYMMETRICAL TRANSITION TYPE WILL VARY BY LOCATION DEPENDING ON GUARDRAIL LAYOUT

THRIE BEAM TRANSITION

SECTION THROUGH

THRIE BEAM TRANSITION

SECTION THROUGH

THRIE BEAM TRANSITION

SECTION THROUGH

THRIE BEAM TRANSITION

SECTION THROUGH

THRIE BEAM TRANSITION

SECTION THROUGH

THRIE BEAM TRANSITION

SECTION THROUGH

SYMMETRICAL THRIE BEAM TRANSITIONS

"2

3'-1

"16

" OR 116

CLIPPED HEAD OPTIONAL

MINIMUM POST BOLT THREAD LENGTH

BOLT LENGTH MINIMUM THREAD LENGTH

18"

"2

26 3"

"2

9 "4

"2

"4

4 "4

4 2""4

4"4

42"

"2

7'-3

"2

3'-1"2

3'-1

POST BOLT SLOT (TYP.)

"2

" x 24

SPLICE BOLT SLOT (TYP.)

"8

" x 132

"4

4 "4

4 2""4

4"4

42"

"2

7'-3

"2

3'-1"2

3'-1

SPLICE BOLT SLOT (TYP.)

"8

" x 132

POST BOLT SLOT (TYP.)

"2

" x 24

Michigan Department of Transportation

SHEET

16 OF 13FHWA APPROVAL

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR

R-60-J

SHEET

16 OF 14FHWA APPROVAL

INVERTED

MINIMUM POST BOLT THREAD LENGTH

AT BEAM ELEMENT SPLICE POSTS AND AT INTERMEDIATE POSTS

POST BOLTS, SPLICE BOLTS AND WASHERS

STANDARD WIDTH VARIABLE WIDTH (FIELD BEND)

M

A X

OF TRAFFIC

DIRECTION

OF TRAFFIC

DIRECTION

APPROX. 6'-3"

BOLT LENGTH MINIMUM THREAD LENGTH

18"

"2

26 3"

"2

9 "4

"2

POST

BLOCK

OFFSET

POST BOLTS

NO. LENGTH

SPLICE BOLTS WASHERS

(ROUND)

REQ'D (NO. REQ'D)(NO. REQ'D)

TYPE

GUARDRAIL

" LONG)4

(1

WOOD

STEEL

WOOD

WOOD

* "2

"2

MGS-8D

WOOD

STEEL

WOOD

WOOD

"2

18"

MGS-8

PAY ITEM: GUARDRAIL, TYPE MGS-8D

GUARDRAIL, TYPE MGS-8 TO GUARDRAIL, TYPE MGS-8D

DETAIL SHOWING TRANSITION FROM

OFFSET BLOCKS (TYPE MGS-8D) 6" x 1'-0" x 1'-2"

OFFSET BLOCKS (TYPE MGS-8D) 6" x 9" x 1'-2"

2'-4" FOR TYPE MGS-8D

POST BOLT LENGTH

2'-10" FOR TYPE MGS-8D

POST BOLT LENGTH

GUARDRAIL, TYPE MGS-8

PAY ITEM EACH SIDE:

NUT.

" BEYOND 2

TO GUARDRAIL, TYPE MGS-8D POST BOLTS SHALL NOT EXTEND MORE THAN

* EXCEPT AS SPECIFIED ON DETAIL SHOWING TRANSITION FROM GUARDRAIL, TYPE MGS-8

ON TYPE MGS END).

THRIE BEAM TRANSITIONS REQUIRE 20 SPLICE BOLTS EACH (12 0N TYPE T END AND 8

OF TRAFFIC

DIRECTION

PLACEMENT OF GUARDRAIL REFLECTORS

ONE-WAY TRAFFIC

TWO-WAY TRAFFIC

GUARDRAIL

NOTES GOVERNING THE USE OF GUARDRAIL REFLECTORS

GUARDRAIL REFLECTOR

DIRECTION OF RAIL LAP

TWO-WAY TRAFFIC

ONE-WAY TRAFFIC

3"

2"

(TYP.)

REFLECTORIZED SIDE FACING TRAFFIC

13 GAGE GALVANIZED

(0.0934") NOMINAL

"4

" R4

96° ± 4°

OF TRAFFIC

DIRECTION

OF TRAFFIC

DIRECTION

OF TRAFFIC

DIRECTION

OF TRAFFIC

DIRECTION

TRAFFIC

SURFACE FACING

REFLECTORIZED GUARDRAILSEE NOTES BELOW

OF TRAFFIC

DIRECTION

GUARDRAIL

SEE NOTES BELOW

ADJACENT GUARDRAIL POSTS

IN OPPOSITE DIRECTIONS ON

PLACE GUARDRAIL REFLECTORS

OF TRAFFIC

DIRECTION

OF TRAFFIC

DIRECTION

GUARDRAIL

HEIGHT AND COMPATIBILITY WITH POST HOLES.

THE POST BOLT HOLES SHALL BE LOCATED TO ENSURE PROPER RAIL

DEPTH OF THE BLOCK SHALL BE AS SPECIFIED ON THIS STANDARD AND

BEVELS SPECIFIED. THE LENGTH (FRONT AND BACK FACE), WIDTH AND

A 1" BEVELED TOP MAY BE USED IN LIEU OF WOOD BLOCKS WITHOUT

" BEVELS AT THE TOP AND BOTTOM OR2

WOOD OFFSET BLOCKS WITH

HEIGHT.

THE POST BOLT HOLES SHALL BE LOCATED TO ENSURE PROPER RAIL

DEPTH OF THE POST SHALL BE AS SPECIFIED ON THIS STANDARD AND

WOOD POSTS WITHOUT BEVELS SPECIFIED. THE LENGTH, WIDTH AND

" BEVELS AT THE TOP MAY BE USED IN LIEU OF 2

WOOD POSTS WITH

BENT SECTION WILL BE REQUIRED FOR EACH CURVED ELEMENT.

150' OR LESS. A TAG IDENTIFYING THE CURVATURE OF THE SHOP

BEAM ELEMENTS SHALL BE SHOP BENT TO PLAN RADIUS FOR CURVE RADII

GUARDRAIL.

SHOULD BE MEASURED FROM THE GROUND JUST IN FRONT OF THE

THE GUARDRAIL PANEL IS LOCATED BEHIND THE CURB THE RAIL HEIGHT

CLOSEST TO THE EDGE OF THE TRAVELED LANE. WHEN THE FACE OF

GUTTER PAN, WHICH IS THE POINT ON THE GUTTER PAN THAT IS

THE RAIL HEIGHT SHOULD BE MEASURED FROM THE FRONT EDGE OF THE

WHEN THE FACE OF GUARDRAIL IS PLACED FLUSH WITH FACE OF CURB,

GUIDE TO STANDARDIZED HIGHWAY BARRIER HARDWARE."

AGC-ARTBA JOINT COMMITTEE, TASK FORCE 13 PUBLICATION TITLED "A

DETAILS SPECIFIED ON THIS STANDARD ARE ACCORDING TO THE AASHTO-

NOTES:

ANCHORAGE, BRIDGE.

DEPARTING TERMINALS AND STANDARD PLAN R-67-SERIES FOR GUARDRAIL

APPROACH TERMINALS, STANDARD PLAN R-66-SERIES FOR GUARDRAIL

SEE STANDARD PLAN R-62-SERIES OR R-63-SERIES FOR GUARDRAIL

GUARDRAIL RUNS, REGARDLESS OF ROADWAY LIGHTING.

GUARDRAIL REFLECTORS SHALL BE USED ON ALL STANDARD 1.

TERMINAL STANDARD PLAN.

TERMINALS, SEE THE APPROPRIATE GUARDRAIL APPROACH

FOR GUARDRAIL REFLECTOR PLACEMENT ON APPROACH 3.

POST FROM THE GUARDRAIL DEPARTING TERMINAL.

A GUARDRAIL REFLECTOR IS TO BE PLACED ON THE SECOND 4.

ARE TO BE PLACED ON THE UPPER POST BOLT.

ON GUARDRAIL, TYPE T AND TYPE TD GUARDRAIL REFLECTORS 5.

GUARDRAIL REFLECTORS SHALL MATCH COLOR OF EDGE LINE.6.

25'-0" ON CURVES WITH A RADIUS LESS THAN 1150'.b)

OF 1150' OR MORE.

50'-0" ON TANGENT SECTIONS AND CURVES WITH A RADIUS a)

INTERVALS:

GUARDRAIL REFLECTORS ARE TO BE SPACED AT THE FOLLOWING 2.

Michigan Department of Transportation

SHEET

16 OF 15FHWA APPROVAL

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR

R-60-J

SHEET

16 OF 16FHWA APPROVAL

G U

A R

D R

A

IL

A P

P R

O A

C H

T E

R M

IN

A

L T

Y P

E

M

(X

G U

A R

D R

A

IL

L E

N G

T H

O F

N E

E D

(X

G U

A R

D R

A

IL

L E

N G

T H

O F

N E

E D

G U

A R

D R

A

IL

A P

P R

O A

C H

T E

R M

IN

A

L T

Y P

E

M

P L

A N

V

IE

W

E L

E V

A T

IO

N

G U

A R

D R

A

IL

A P

P R

O A

C H

T E

R M

IN

A

L T

Y P

E

M

S

O F

T -S

T O

P

E L

E V

A T

IO

N

G U

A R

D R

A

IL

A P

P R

O A

C H

T E

R M

IN

A

L T

Y P

E

M

M

S K

T

OPTION 1 OPTION 2

B E

A M

E L

E M

E N

T

M G

S

2'-0"

MIN

OFFSET

1'-0"1

M

IN

1:10 SLOPE MAX

31"

31"

(S E

E N

O T

E S

(S E

E N

O T

E S

E D

G E

O F

P A

V E

M E

N T

S H

O U

L D

E R

H

IN

G E

L

IN

E

(Z) LATERAL OFFSET

P L

A N

V

IE

W

2'-0"

MIN

M

IN

(Z) LATERAL OFFSET

E D

G E

O F

P A

V E

M E

N T

S H

O U

L D

E R

H

IN

G E

L

IN

E

1:10 SLOPE MAX

OFFSET

1'-0"

Michigan Department of Transportation

R-62-H

SHEET

5 1 OF FHWA APPROVAL

SPECIAL DETAIL 02/23/2026

GUARDRAIL APPROACH TERMINAL TYPE 2M

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR

R-62-H

SHEET

5 2 OF FHWA APPROVAL

APPROVED BY:

APPROVED BY:

DIRECTOR, BUREAU OF DEVELOPMENT

FIELD SERVICES DIRECTOR, BUREAU OF

G U

A R

D R

A

IL

A P

P R

O A

C H

T E

R M

IN

A

L T

Y P

E

M

(X

G U

A R

D R

A

IL

L E

N G

T H

O F

N E

E D

1"

S O

IL

A

N C

H O

R

E L

E V

A T

IO

N

G U

A R

D R

A

IL

A P

P R

O A

C H

T E

R M

IN

A

L T

Y P

E

M

M

A X

-T E

N S

IO

N

P L

A N

V

IE

W

OPTION 3

2'-0"

MIN

M

IN

1:10 SLOPE MAX

OFFSET

1'-0"

31"

(S E

E N

O T

E S

E D

G E

O F

P A

V E

M E

N T

S H

O U

L D

E R

H

IN

G E

L

IN

E

(Z) LATERAL OFFSET

G U

A R

D R

A

IL

A P

P R

O A

C H

T E

R M

IN

A

L T

Y P

E

M

(X

G U

A R

D R

A

IL

L E

N G

T H

O F

N E

E D

A N

C H

O R

P O

S T

E L

E V

A T

IO

N

G U

A R

D R

A

IL

A P

P R

O A

C H

T E

R M

IN

A

L T

Y P

E

M

N

G T

31"

(S E

E N

O T

E S

7"

5"

P L

A N

V

IE

W

2'-0"

MIN

OFFSET

1'-0"

M

IN

1:10 SLOPE MAX

E D

G E

O F

P A

V E

M E

N T

S H

O U

L D

E R

H

IN

G E

L

IN

E

(Z) LATERAL OFFSET

6"

"2

OPTION 4

Michigan Department of Transportation

R-62-H

SHEET

5 3 OF FHWA APPROVAL

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR

R-62-H

SHEET

5 4 OF FHWA APPROVAL

GRADE ALL 1:10 OR FLATTER SLOPES TO MEET CLASS A SLOPE TOLERANCES.

THE LEFT SIDE

TRAFFIC PASSING ON

BOTH SIDES

TRAFFIC PASSING ON

(NOTE: ALTERNATE 3" BLACK AND 3" YELLOW STRIPES ON A 45° ANGLE)

USE REFLECTIVE SHEETING ACCORDING TO THE FOLLOWING TRAFFIC CONDITIONS:

THE RIGHT SIDE

TRAFFIC PASSING ON

TRAFFIC WITH HIGH-INTENSITY REFLECTIVE SHEETING.

COMPLETELY COVER THE PORTION OF THE IMPACT HEAD ASSEMBLY FACING

GUARDRAIL RUN.

APPROACH TERMINAL. BEGIN PLACING REFLECTORS AT THE START OF THE STANDARD

DO NOT INSTALL GUARDRAIL REFLECTORS OR OTHER ATTACHMENTS ON THE GUARDRAIL

OFFSET FROM THE TANGENT LINE TO THE TRAFFIC FACE OF POST 1).

INSTALL GUARDRAIL APPROACH TERMINAL TYPE 2M STRAIGHT (WITHOUT THE 1'-0"

WHEN SITE CONDITIONS WARRANT AND WITH THE APPROVAL OF THE ENGINEER,

SPECIFICATIONS.

BOLTS, NUTS, AND WASHERS) CONFORM TO THE MANUFACTURER'S DETAILS AND

ENSURE ALL POSTS, OFFSET BLOCKS, BEAM ELEMENTS, AND HARDWARE (INCLUDING

LENGTHS WHEN ATTACHING TERMINALS TO GUARDRAIL TYPES OTHER THAN MGS-8.

REFER TO STANDARD PLAN R-60-SERIES TO DETERMINE ADDITIONAL TRANSITION

NGT (NEXT GENERATION TERMINAL) IS MANUFACTURED BY NEXTGEN SAFETY, LLC.

MAX-TENSION IS MANUFACTURED BY LINDSAY TRANSPORTATION SOLUTIONS, LLC.

SOFT-STOP IS MANUFACTURED BY VALTIR, LLC.

ROAD SYSTEMS, INC.

MSKT (MASH-COMPLIANT SEQUENTIAL KINKING TERMINAL) IS MANUFACTURED BY

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR

R-62-H

SHEET

5 OF 5FHWA APPROVAL

(SPECIAL DETAIL) 02/23/2026

R-73-F

SHEET

3 OF 1FHWA APPROVAL

(SPECIAL DETAIL) 08/01/2019

GUARDRAIL OVER BOX OR SLAB CULVERTS

Michigan Department of Transportation

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR

R-73-F

SHEET

3 OF 2FHWA APPROVAL

APPROVED BY:

APPROVED BY:

DIRECTOR, BUREAU OF DEVELOPMENT

FIELD SERVICES DIRECTOR, BUREAU OF

" DIA. HOLE16

BASE PLATE

"8

OF POST�

PREFERRED CONSTRUCTION METHOD

L E

N G

T H

A S

R E

Q U

IR

E

D

STEEL POST

W6 x 8.5 OR W6 x 9

SECTION A - A

BASE PLATE (TYP.)

FOR LEVELING UNDER

GALVANIZED WASHERS

1'-6" MIN.

STANDARD SPECIFICATIONS

OF GALVANIZED SURFACES, SEE

PROPER HEIGHT. FOR REPAIR

POST MAY BE FIELD CUT TO

W6 x 8.5 OR W6 x 9 STEEL POST

SEE DETAIL SHEET 3 OF 3

BASE PLATE

ALTERNATE CONSTRUCTION METHOD

ANCHOR DETAIL

SECTION A - A

1'-6" MIN.

SEE DETAIL SHEET 3 OF 3

BASE PLATE

STANDARD SPECIFICATIONS

OF GALVANIZED SURFACES, SEE

PROPER HEIGHT. FOR REPAIR

POST MAY BE FIELD CUT TO

W6 x 8.5 OR W6 x 9 STEEL POST

SEE DETAIL SHEET 3 OF 3

WITH WASHERS AND NUT (TYP.)

LENGTH AS REQUIRED

" DIA. ANCHOR BOLT8

SEE DETAIL SHEET 3 OF 3

WASHER PLATE GUARDRAIL, TYPE MGS-8

STEEL POST DETAIL FOR

THROUGH CULVERT SLAB

1" DIA. HOLE DRILLED

BASE PLATE (TYP.)

FOR LEVELING UNDER

GALVANIZED WASHERS

LOCK WASHER (TYP.)

FLAT WASHER (TYP.)

BASE PLATE

" STEEL HEAVY HEX NUT (TYP.)8

M

IN

(THREADED FULL LENGTH) (TYP.)

ADHESIVE ANCHORED

" DIA. THREADED ROD8

SYSTEMS.

SEE "MATERIAL SOURCE GUIDE" UNDER ADHESIVE

WITH A MINIMUM EMBEDMENT DEPTH OF 6".

" DIA. THREADED ROD, ADHESIVE ANCHORED, 8

ELEVATION SHOWING GUARDRAIL, TYPE T

ELEVATION SHOWING GUARDRAIL, TYPE B

A

A

A

ALIGNMENT WHEN APPLICABLE

MATCH EXISTING GUARDRAIL

NORMAL SHOULDER + 2'-0" OR

PLAN VIEW

ELEVATION SHOWING GUARDRAIL, TYPE MGS-8

GUARDRAIL, TYPE T

6'-3" POST SPACING

SEE STANDARD PLAN R-60-SERIES

HEIGHT TRANSITION

GUARDRAIL, TYPE B

6'-3" POST SPACING

OVER CULVERT

6'-3" POST SPACING GUARDRAIL, TYPE MGS-8

GUARDRAIL, TYPE MGS-8 OVER CULVERT

6'-3" POST SPACING

SEE STANDARD PLAN R-60-SERIES

HEIGHT TRANSITION

2'-6"

MIN.

A

2'-6"

MIN.

A

A

OVER CULVERT

6'-3" POST SPACING

6'-3" POST SPACING GUARDRAIL, TYPE MGS-8

2'-6"

MIN.

6'-3" POST SPACING

GUARDRAIL,

TYPE MGS-8

6'-3" POST SPACING GUARDRAIL, TYPE T

/4

2' -0

S

E E

P R

O F

IL

E

/4

14'-0"

CLEAR

5'-0"

28'-1 1/2" TRANSITION

SHEET

OF FHWA APPROVAL

(SPECIAL DETAIL) 00/00/0000

BRADLEY C. WIEFERICH, PE

DEPARTMENT DIRECTOR

R-73-F

SHEET

3 OF 3FHWA APPROVAL

BASE PLATE DETAIL

LOCK WASHER

FLAT WASHER

WASHER PLATE DETAIL

L E

N G

T H

A S

R E

Q U

IR

E

D

1" STEEL HEAVY HEX NUT

SPECIFICATIONS FOR CONSTRUCTION.

ALL WORK AND MATERIALS SHALL BE ACCORDING TO THE STANDARD

SPECIFICATIONS FOR CONCTRUCTION FOR BRIDGE RAILINGS.

ALL MATERIALS FOR GUARDRAIL POST, CULVERT SHALL MEET THE STANDARD

ON THIS PLAN.

LABOR AND MATERIALS REQUIRED TO CONSTRUCT THE POST AS DETAILED

WILL BE PAID FOR AS "GUARDRAIL POST, CULV", WHICH INCLUDES ALL

R-60-SERIES. IN ADDITION, POSTS ANCHORED TO THE CULVERT SLAB

STANDARD SPECIFICATIONS FOR CONSTRUCTION AND STANDARD PLAN

GUARDRAIL SHALL BE CONSTRUCTED AND PAID FOR ACCORDING TO THE

STEEL POST

W6 x 8.5 OR W6 x 9

(TYP.)

1" DIA. HOLE

"16

12"

"2

1 "2

19"

(TYP.)

1" DIA. HOLE

"2

1"2

12"

9"

6"6"

THREADED ROD DETAIL

" DIA. THREADED ROD8