Attachment A3 Standard Plans & Special Details Continued.pdf
PDF 4 MB Posted
- Solicitation number
- RFP 591 220000001506 1
- Issued by
- Arenac County, Michigan
About this file
This is a Standard Plans and Special Details document from the Michigan Department of Transportation (MDOT) Bureau of Development, containing technical specifications and design details for guardrail installation and anchorage systems. The document provides comprehensive engineering plans for terminal-type guardrails, guardrail approach configurations, bridge anchorage details, and retrofit specifications for various guardrail types including Type B, Type T, and Type MGS-8. The specifications cover multiple installation scenarios including approach terminals with three options (Beam Element MGS, Soft-Stop, and Max-Tension), departing terminal configurations, and bridge-mounted guardrail systems with detailed post spacing requirements, beam element specifications, and connection methodologies. The document includes elevation views, plan views, cross-sectional details, and material specifications for both steel and wood components, with posts ranging from 6 feet to 7 feet in length and beam element spacings of 6 feet 3 inches or 12 feet 6 inches as applicable.
The technical specifications require adherence to Class A and Class B slope tolerances per AASHTO M 180 standards, with all bolts, nuts, washers, posts, offset blocks, and hardware conforming to the manufacturer's specifications and current MDOT standards. Installation details address various site conditions including concrete barriers, bridge railings with multiple types, filler walls, and expansion joints, with specific bolt requirements, washer specifications, and anchorage methods documented for each scenario. Reflective sheeting requirements and guardrail height specifications (28 inches to 34 inches depending on type) are included, along with provisions for adhesive anchored bolts in locations where traditional bolting is prohibited. The document explicitly prohibits the use of guardrail reflectors and other attachments on the guardrail approach terminal itself, and provides alternative construction methods for existing filler walls thicker than 1 foot 6 inches.
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Text version
1 4 R-62-H
TERMINAL TYPE 2M
GUARDRAIL APPROACH
B.L.T.
W.K.P.
(X
G U
A R
D R
A
IL
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T H
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M
S K
T
P L
A N
V I E
W
OPTION 1
B E
A M
E L
E M
E N
T
M G
S
½
2'-0"
MIN.
M I
N
1:10 SLOPE MAX.
OFFSET
1'-0"
31"
9-9-2021
DEPARTMENT DIRECTOR MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVALCHECKED BY:
DRAWN BY:
Michigan Department of Transportation
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
APPROVED BY:
APPROVED BY:
Paul C. Ajegba
BY
PREPARED
DESIGN DIVISION
DIRECTOR, BUREAU OF FIELD SERVICES
DIRECTOR, BUREAU OF DEVELOPMENT
(S E
E N
O T
E S
2 4
TERMINAL TYPE 2M
GUARDRAIL APPROACH
½
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S
O F
T S
T O
P
OPTION 2
2'-0"
MIN.
OFFSET
1'-0"1
M I
N
1:10 SLOPE MAX.
31"
9-9-2021
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
(S E
E N
O T
E
3 4
TERMINAL TYPE 2M
GUARDRAIL APPROACH
¾
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OPTION 3
2'-0"
MIN.
M I
N
1:10 SLOPE MAX.
OFFSET
1'-0"
31"
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
9-9-2021
(S E
E N
O T
E
4 4
ALL 1:10 SLOPES SHALL BE GRADED TO 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
COMPLETELY COVERED WITH HIGH INTENSITY ADHESIVE REFLECTIVE SHEETING.
THE PORTION OF THE IMPACT HEAD ASSEMBLY FACING TRAFFIC SHALL BE
RUN OF GUARDRAIL.
GUARDRAIL APPROACH TERMINAL. PLACE REFLECTORS BEGINNING ON STANDARD
GUARDRAIL REFLECTORS AND OTHER ATTACHMENTS ARE NOT TO BE USED ON THE
THE 1'-0" OFFSET FROM THE TANGENT LINE TO THE TRAFFIC FACE OF POST 1).
GUARDRAIL APPROACH TERMINAL TYPE 2M CAN BE INSTALLED STRAIGHT (WITHOUT
WHEN SITE CONDITIONS WARRANT AND WITH THE APPROVAL OF THE ENGINEER,
TERMINAL TYPE 2M
GUARDRAIL APPROACH
AND SPECIFICATIONS.
BOLTS, NUTS, AND WASHERS) SHALL CONFORM TO THE MANUFACTURER'S DETAILS
ALL POSTS, OFFSET BLOCKS, BEAM ELEMENTS, AND HARDWARE (INCLUDING
9-9-2021
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
ATTACHING TERMINALS TO OTHER THAN TYPE MGS-8 GUARDRAIL.
SEE STANDARD PLAN R-60-SERIES FOR ADDITIONAL TRANSITION LENGTHS WHEN
NOTES:
B.L.T.
W.K.P. 41 R-66-E
DEPARTMENT DIRECTOR MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVALCHECKED BY:
DRAWN BY:
Michigan Department of Transportation
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
APPROVED BY:
APPROVED BY:
Kirk T. Steudle
BY
PREPARED
DESIGN DIVISION
DIRECTOR, BUREAU OF FIELD SERVICES
DIRECTOR, BUREAU OF DEVELOPMENT
TERMINAL TYPES B, T, & MGS
GUARDRAIL DEPARTING
GROUND LINE
BEARING PLATE
SPLICE (TYP.)
BEARING PLATE
UPPER CORRUGATION ONLY.
ANCHOR PLATE SHALL BE PLACED ON
EITHER LEFT OR RIGHT ENDINGS.
THE BEAM ELEMENT MAY BE USED FOR
HOLES WILL BE ALLOWED SO THAT
* AN OPTIONAL SET OF ANCHOR PLATE
OF TRAFFIC
DIRECTION
OF TRAFFIC
DIRECTION
NOTE: OMIT OFFSET BLOCK ON LAST POST
NOTE: OMIT OFFSET BLOCK ON LAST POST
HOT-DIP ZINC COATED NAILS (SEE NOTES)
HOT-DIP ZINC COATED NAILS (SEE NOTES)
S H
O U
L D
E R
N O
R M
A L
GUARDRAIL DEPARTING TERMINAL TYPE B
GUARDRAIL DEPARTING TERMINAL TYPE B
GUARDRAIL DEPARTING TERMINAL TYPE T
GUARDRAIL DEPARTING TERMINAL TYPE T
GUARDRAIL, TYPE B
GUARDRAIL, TYPE B
LINE POST FOR
GUARDRAIL, TYPE T
TERMINAL END SHOE, TYPE B
TERMINAL END SHOE, TYPE T
PLACE POST SLEEVE IN HOLE
PLACE POST SLEEVE IN HOLEGROUND LINE
SPLICE (TYP.)
GUARDRAIL, TYPE T
LINE POST FOR
S H
O U
L D
E R
N O
R M
A L
1'-0"
12'-6"
12'-6"
1'-2" 1'-0"
8 HOLES
* ƒ" DIA.
\ 2•" DIA. HOLE
\ 2•" DIA. HOLE
(6" x 8" x 7'-0")
ON LAST TWO POSTS
WOOD POSTS SHALL BE USED
(6" x 8" x 7'-0")
ON LAST TWO POSTS
WOOD POSTS SHALL BE USED
9-28-2018
CABLE ASSEMBLY
ANCHOR PLATE AND
CABLE ASSEMBLY
ANCHOR PLATE AND
R-66-E
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
TERMINAL TYPES B, T, & MGS
GUARDRAIL DEPARTING
W-BEAM ELEMENT
STANDARD (12'-6")
(6" x 8" x 7'-0")
ON LAST TWO POSTS
WOOD POSTS SHALL BE USED
OF TRAFFIC
DIRECTION
S H
O U
L D
E R
N O
R M
A L
1'-2"
NOTE: OMIT OFFSET BLOCK ON LAST POST
HOT-DIP ZINC COATED NAILS (SEE NOTES)
BEARING PLATE
PLACE POST SLEEVE IN HOLE
\ 2•" DIA. HOLE
GUARDRAIL DEPARTING TERMINAL TYPE MGS
TERMINAL END SHOE
GUARDRAIL DEPARTING TERMINAL TYPE MGS
SPLICE (TYP.)
GROUND LINE
BEAM ELEMENT LENGTH
9'-4•" EFFECTIVE
POST SPACING
6'-3" TYPICAL
BEAM ELEMENT
MGS (9'-4•")
9-28-2018
GUARDRAIL, TYPE MGS
LINE POST FOR
GUARDRAIL, TYPE MGS-8
CABLE ASSEMBLY
7" MIN. 5" MIN.2"+
FITTING AND STUD
STANDARD SWAGE
6'-6"
1†" DIA. 1‚" DIA.
CABLE TO BE SWAGE CONNECTED
ƒ" DIA. (6X19) GALVANIZED
ENTIRE LENGTH (N.C.)
1" DIA. THREADED
ASSEMBLY
CABLE
BEAM ELEMENT
HEX NUT (TYP.)
ONE PIECE ANCHOR PLATE
CABLE ANCHOR PLATE DETAILS
1" DIA. WASHER
•" R
2ƒ
1ƒ
" DIA. HOLE (TYP.)
ON FRONT FACE THROUGH ƒ"
HEXHEAD BOLT WITH WASHER
PLACE †" DIA. x 1•" LONG
2 - 1" DIA. HEX NUTS
1" DIA. STUD AND
CABLE ANCHOR PLATE
CABLE ASSEMBLY
ANCHOR PLATE AND
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
3"
3"
( FOR LAST POST, GUARDRAIL DEPARTING TERMINAL TYPE T )
WOOD POST DETAILWOOD POST DETAIL
6" 8"
4" ƒ" DIA. HOLES
2•" DIA. HOLE
6" 8"
4"
2•" DIA. HOLE
ƒ" DIA. HOLE
( FOR LAST POST, GUARDRAIL DEPARTING TERMINAL TYPE B )
WOOD POST DETAIL
3"
6"
4"
8"
2•" DIA. HOLE
ƒ" DIA. HOLES
( FOR LAST POST, GUARDRAIL DEPARTING TERMINAL TYPE MGS )
R-66-E
TERMINAL TYPES B, T, & MGS
GUARDRAIL DEPARTING
9-28-2018
FOR DETAILS OF GUARDRAIL PLACEMENT, SEE STANDARD PLAN R-59-SERIES.
ALL 1:10 SLOPES SHALL BE GRADED TO CLASS A SLOPE TOLERANCES.
LOOSEN.
BE INSTALLED ON EACH END OF THE CABLE SO THAT THE CABLE WILL NOT
AFTER THE CABLE ASSEMBLY HAS BEEN TIGHTENED, A SECOND NUT SHALL
ROTATING.
AT THE TOP OF THE BEARING PLATE TO KEEP THE BEARING PLATE FROM
TWO HOT-DIP ZINC COATED NAILS SHALL BE DRIVEN INTO THE WOOD POST
APPLICABLE, EXCEPT AS SPECIFIED ON THIS STANDARD.
SPECIFICATIONS AND TO THE CURRENT STANDARD PLAN R-60-SERIES, WHERE
BOLTS, NUTS, AND WASHERS) SHALL CONFORM TO THE CURRENT STANDARD
ALL POSTS, OFFSET BLOCKS, BEAM ELEMENTS, AND HARDWARE (INCLUDING
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
TYPE B OR TYPE MGS
TERMINAL END SHOE,
R-66-E
TERMINAL TYPES B, T, & MGS
GUARDRAIL DEPARTING
9-28-2018
POST SLEEVE
BEARING PLATE
8•"
3" MIN.
3" MIN.
8•"
TERMINAL END SHOE, TYPE T
o
6"
8"
4"
1ˆ" DIA. HOLE
TACK WELDED TO †" THICK STEEL PLATE
‚" THICK x 1" x 8" STEEL PLATE
1" TO 2…" R
SPLICE BOLT SLOT (TYP.)
x 1„"
R
2‚"
R
2‚"
1" TO 2…" R
SPLICE BOLT SLOT (TYP.)
x 1„"
I
D
7•"+ 7•"+
2'-0" APPROX.
2'-0" APPROX.
30°
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
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O
DEPARTMENT DIRECTOR MICHIGAN DEPARTMENT OF TRANSPORTATION
SHEET
PLAN DATEF.H.W.A. APPROVALCHECKED BY:
DRAWN BY:
Michigan Department of Transportation
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
APPROVED BY:
APPROVED BY:
Paul C. Ajegba
BY
PREPARED
DESIGN DIVISION
DIRECTOR, BUREAU OF FIELD SERVICES
DIRECTOR, BUREAU OF DEVELOPMENT
B.L.T.
W.K.P.
8-30-2021
R-67-G8-30-2021
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SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
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SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
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SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
¾
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SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
¾
S
P A
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P E
B
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
G A
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SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
S
P A
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SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
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SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G 10 16
(TYP)
½" MAX.
5"
2 TUBE
4 TUBE
AESTHETIC PARAPET TUBE
3 TUBE WITH PICKETS
TYPE 6
TYPE 7
GUARDRAIL TO BRIDGE RAILINGS
BOLT REQUIREMENTS FOR CONNECTING
THICKNESS
WALL
THICKNESS
WALL
RAILING
BRIDGE
1'-5½"
1'-7"
1'-0"
1'-4½"
1'-7½"
1'-9"
1'-2"
1'-6½"
LENGTH
BOLT
THREAD LENGTH
MINIMUM
4"
4"
4"
4"
4"
4"
HEIGHT.
DETAIL M1 THROUGH M9 FOR GUARDRAIL
REFER TO GUARDRAIL ANCHORAGE BRIDGE,
(ROADWAY)
TOP OF SLAB
G U
A R
D R
A
IL
H E
IG
H
T
CURB & GUTTER
4" MAX. HEIGHT
POST DETAIL
GUARDRAIL ANCHORAGE, BRIDGE, DETAIL M1 THROUGH M9
GUARDRAIL POST SECTIONS FOR
BRIDGE RAILING & FILLER WALL
ALTERNATE CONSTRUCTION METHOD
FILLER WALL
VARIES 4"WALL THK + 2"
APPLICABLE ONLY TO FILLER WALLS
** FILLER WALL
3. WHEN CONDITIONS PROHIBIT THE USE OF BOLTS
2. IN EXISTING FILLER WALLS THICKER THAN 1'-6"
FILLER WALL EXTENSION
WALL IS A DIFFERENT THICKNESS THAN THE
1. AT OR NEAR THE JOINT LINE WHEN A FILLER
LOCATIONS:
THROUGH THE FILLER WALL, IN THE FOLLOWING
WALLS WILL BE ALLOWED, INSTEAD OF BOLTING
EMBEDDED 8" TO ATTACH GUARDRAIL TO FILLER
** THE USE OF ⅞" DIA. ADHESIVE ANCHORED BOLTS
4"1'-3¾"CONCRETE BLOCK RETROFIT 1'-5¾"
8-30-2021
1'-5¾"/1'-6¾" *** 1'-7¾"/1'-8¾" ***
1'-2½"/1'-3½" *** 1'-4½"/1'-5½" ***
*** THICKNESS/LENGTH DEPENDENT UPON AESTHETIC TREATMENT ON RAILING
BEYOND THE NUT WHEN TIGHTENED.
SHORTER BOLT LENGTHS MAY BE USED PROVIDED THE BOLT EXTENDS ¼"
NUMBER REQUIRED.) WASHER DETAILS ARE SHOWN ON SHEET 11.
AND SQUARE WASHERS ON BACK. (SEE CHART BELOW FOR LENGTHS AND
CONNECT GUARDRAIL TO BRIDGE RAILINGS WITH ROUND WASHERS ON FRONT
HIGH STRENGTH ⅞" DIA. HEX HEAD BOLT AND NUTS SHALL BE USED TO
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
3⅜"
1�"
NEUTRAL AXIS
8½"
THRIE BEAM EXPANSION SECTION
4"
SPLICE BOLT SLOT (TYP.)
x 1⅛" 4¼" 4¼" 2"
6¼"
1'-6¾"
AS THRIE BEAM ELEMENT
SAME CROSS SECTION
POST BOLT SLOTS
¾" x 2½"
7" 12'-6"
¾" x 3¾" SLOTTED HOLES SPACED AT 1'-6¾"
SLOTTED HOLE (TYP.)
x 5"
⅞" DIA. BOLTS
ROUND WASHER FOR
�" DIA. HOLE
2¼" DIA.
⅞" DIA. BOLTS
SQUARE WASHER FOR
�" DIA. HOLE
¼"
3"
1½"
½
3"+
2"
8½"
7¼"3"
MIN.
3⅜"
2'-6"
4"4"
(TYP.)
1" DIA. HOLES
1�"
4"
⅜
BRIDGE RAILING
AVOID STEEL REINFORCEMENT IN
1" DIA. HOLES WHEN NEEDED TO
DRILL (DO NOT BURN) ADDITIONAL
¾
½
½
¾
NEUTRAL AXIS
¼
¼
⅝
" 1
⅜
3"+
3"8½"2" 8"
2'-6"
⅝
⅝
3⅜"
1�"
NEUTRAL AXIS
7¼"
SPECIAL END SHOE
\ BEAM ELEMENT
\ x 5" SLOTS
(OPTIONAL)
POST BOLT SLOT
¾" x 2½"
(TYP.)
1" DIA. HOLES
(OPTIONAL)
POST BOLT SLOT (TYP.)
¾" x 2½"
(TYP.)
SPLICE BOLT SLOT
x 1⅛"
THRIE BEAM TERMINAL CONNECTOR
REFER TO SHEET 15 FOR BOLT LOCATIONS FOR DETAILS M1, M2, M3, M4, M5 AND M6.
BOLT LOCATIONS SHOWN APPLY TO DETAILS M7, M8 AND M9.
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G
SECTION A-A
2'-8"
1'-4"8" 8" 2'-0"
2'-4"
1'-8"
SURFACE
SHOULDER
SURFACE
SHOULDER
SURFACE
SHOULDER
SECTION B-B SECTION C-C
DETAILS FOR CONNECTING GUARDRAIL TO CONCRETE BARRIER, SINGLE FACE
BA C
BA
C
4'-0"
(TYP)
½" MAX.
12'-0"
TRANSITION SECTION
CONCRETE BARRIER, SINGLE FACE
SEE STANDARD PLAN R-54-SERIES
CONCRETE BARRIER
FROM SINGLE SLOPE SHAPE TO VERTICAL WALL
UNIFORMLY TRANSITION THE BARRIER FACES
4'-0"4'-0"
TRANSITION SECTION.
CONNECT GUARDRAIL TO CONCRETE BARRIER, SINGLE FACE
ROUND WASHERS FRONT AND BACK SHALL BE USED TO
BOLTS WITH 2" MINIMUM THREAD LENGTH AND NUTS WITH
HIGH STRENGTH ⅞" DIAMETER x 26" LONG HEX HEAD
PLAN VIEW
FOR GUARDRAIL POST SPACING AND LAYOUT DETAILS.
REFER TO GUARDRAIL ANCHORAGE BRIDGE, DETAIL M1, M2 AND M3
HEIGHT.
DETAIL M1, M2, AND M3 FOR GUARDRAIL
* REFER TO GUARDRAIL ANCHORAGE BRIDGE,
R-67-G
4¼"4¼" 2"4¼"4¼"2"
7'-3½"
1'-6¾" 1'-6¾"
POST BOLT SLOT (TYP.)
¾" x 2½"
SPLICE BOLT SLOT (TYP.)
x 1⅛"
1'-6¾" 1'-6¾"
6'-3" THRIE BEAM SECTION
⅛
¼
TOP
FRONT
W BEAM GUARDRAIL
OFFSET BLOCK FOR
FRONT
THRIE BEAM GUARDRAIL
OFFSET BLOCK FOR
TOP
2"
⅝
⅝"
⅛
SPLICE BOLT
GUARDRAIL BEAM ELEMENTS
FOR USE WITH NESTED
⅜
6"
4¼"
¾" DIA. HOLE
⅜
6"
4¼"
⅛
⅝
¼
FRONT
THRIE BEAM GUARDRAIL
OFFSET BLOCK FOR
¾" DIA. HOLE
TOP
6"
⅛
⅝
¼
FOR USE WITH W6 x 15 POSTSFOR USE WITH W6 x 8.5 OR W6 x 9 POSTS
1⅛"
< ⅛"
1⅛"
< ⅛"
¾" DIA. HOLE
1⅛"
< ⅛"
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
1�" OR 1�"
CLIPPED HEAD OPTIONAL
R-67-G
3�"
¾"
⅝
5⅞"
6"
FRONT SIDE FRONT SIDE
W6 x 15 POST W6 x 8.5 POST
W6 x 9 OR
TOP TOP
6"
¾" DIA. HOLE *
GUARDRAIL
WITH THRIE BEAM
* BOTTOM HOLE FOR USE
O R
(OPTIONAL)
GALVANIZING HOLE
T O
(OPTIONAL)
GALVANIZING HOLE
T O
⅝
¾" DIA. HOLE
1⅞"
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
⅝
8½"8"2"
7¼" ⅝
3"
2'-6"
3"<
⅜
(TYP.)
SPLICE BOLT SLOT
�" x 1⅛"
(OPTIONAL)
POST BOLT SLOT (TYP.)
¾" x 2½"
(TYP.)
1" DIA. HOLE
GUARDRAIL ANCHORAGE TYPE M1, M3, M4, M6
BOLT LOCATION FOR
THRIE BEAM TERMINAL CONNECTOR
⅝
8½"8"2"
7¼"
⅝
3"
2'-6"
3"<
⅜
(TYP.)
SPLICE BOLT SLOT
�" x 1⅛"
(OPTIONAL)
POST BOLT SLOT (TYP.)
¾" x 2½"
(TYP.)
1" DIA. HOLE
GUARDRAIL ANCHORAGE TYPE M2, M5
BOLT LOCATION FOR
THRIE BEAM TERMINAL CONNECTOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G 15 16
BRIDGE SPANS A BRIDGE EXPANSION JOINT.
SEE APPROPRIATE PLANS TO DETERMINE WHETHER GUARDRAIL ANCHORAGE,
FILLER WALL END BLOCK.
SEE THE CURRENT STANDARD PLAN R-55-SERIES FOR FILLER WALLS AND
BE LAPPED IN EITHER DIRECTION.
TRAFFIC, EXCEPT FOR THE THRIE BEAM TERMINAL CONNECTOR WHICH MAY
GUARDRAIL BEAM ELEMENTS SHALL BE LAPPED IN THE DIRECTION OF
USE IN ANCHORAGE SHALL BE FIELD BENT.
SECTIONS OF THE THRIE BEAM ELEMENT REQUIRED TO BE TWISTED FOR
STANDARD.
PLAN R-60-SERIES, WHERE APPLICABLE, EXCEPT AS SPECIFIED ON THIS
THE CURRENT STANDARD SPECIFICATIONS AND TO THE CURRENT STANDARD
HARDWARE, (INCLUDING BOLTS, NUTS, AND WASHERS) SHALL CONFORM TO
ALL POSTS, OFFSET BLOCKS, BEAM ELEMENTS, REFLECTORS, AND
FACE, TYPE __".
SEE STANDARD PLAN R-54-SERIES FOR "CONCRETE BARRIER, SINGLE
TYPE __".
INCLUDED IN THE PAY ITEM "CONCRETE BARRIER, SINGLE FACE,
CONCRETE BARRIER, SINGLE FACE TRANSITION SECTION SHALL BE
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
R-67-G 16 16
GAUGE MUST MEET CLASS B REQUIREMENTS PER AASHTO M 180.
REQUIREMENTS PER AASHTO M 180. BEAM ELEMENTS IDENTIFIED AS 10
BEAM ELEMENTS IDENTIFIED AS 12 GAUGE MUST MEET CLASS A
GUTTER AND DOWNSPOUT HEADER.
SEE THE CURRENT STANDARD PLAN R-32-SERIES FOR APPROACH CURB AND
COLD CHISEL, SO THAT IT WILL NOT LOOSEN.
FIRST THREAD ON THE OUTSIDE OF THE NUT WITH A CENTER PUNCH OR
BEYOND THE NUT. THIS SHALL BE FOLLOWED UP BY UPSETTING THE
ENGAGE THE SPLICE BOLT WITH A MINIMUM OF ONE THREAD EXTENDING
SPLICE BOLT NUT SHALL BE INSTALLED FINGER-TIGHT AND SHALL FULLY
SPLICING THE SPECIAL END SHOE TO THE TRANSITION SECTION. THE
TERMINAL CONNECTOR TO THE THRIE BEAM EXPANSION SECTION AND WHEN
SPLICE BOLTS SHALL BE USED WHEN SPLICING THE THRIE BEAM
NOT BE LIGHTER THAN 10 GAUGE (0.138").
BE THE SAME MATERIAL AS ADJACENT RUN OF GUARDRAIL, AND SHALL
THE THRIE BEAM TERMINAL CONNECTOR AND SPECIAL END SHOE SHALL
SHEET
PLAN DATEF.H.W.A. APPROVALCHECKED BY:
DRAWN BY:
Michigan Department of Transportation
BUREAU OF DEVELOPMENT SPECIAL DETAIL FOR
APPROVED BY:
APPROVED BY:
Paul C. Ajegba
BY
PREPARED
DESIGN DIVISION
DIRECTOR, BUREAU OF FIELD SERVICES
DIRECTOR, BUREAU OF DEVELOPMENT 1
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
RAILING
BRIDGE BARRIER
E3 JOINT
P O
S T
P O
S T
P O
S T
P O
S T
P O
S T
P O
S T
PLAN VIEW
15"
(4 SPACES) (3 SPACES)
3'-1½" POST SPACING
25'-0"
10'-7½"
POST SPACING
6'-3"
3'-6" POST SPACING
1'-6¾"
ELEVATION VIEW
THRIE BEAM EXPANSION SECTION
BRIDGE BARRIER RAILING
THRIE BEAM TERMINAL CONNECTOR
15"
(4 SPACES) (3 SPACES)
3'-1½" POST SPACING 6'-3" POST SPACING
(2 SPACES)
3'-6" POST SPACING
1'-6¾"
10'-7½"
"3
THRIE BEAM EXPANSION SECTIONTHRIE BEAM TERMINAL CONNECTOR
BRIDGE BARRIER RAILING
ELEVATION VIEW
(TO BE USED WITH GUARDRAIL, TYPE B)
(WITHOUT EXPANSION AT BACKWALL)
6'-3" TYPICAL POST SPACING
GUARDRAIL, TYPE T
GUARDRAIL, TYPE MGS-8 *
INFORMATION)
FOR TYPE MGS-8 GUARDRAIL HEIGHT
(SEE STANDARD PLAN R-60-SERIES
34" TYPE T
(TO BE USED WITH GUARDRAIL, TYPE T & TYPE MGS-8)
AESTHETIC PARAPET TUBE, OR 3 TUBE WITH PICKETS
BRIDGE BARRIER RAILINGS, TYPE 4, 2-TUBE, 4-TUBE,
DETAILS FOR CONNECTING GUARDRAIL TO
6'-3" TYPICAL POST SPACING
GUARDRAIL, TYPE B
31'-3"
10 GAUGE
TRANSITION
THRIE BEAM
SYMMETRICAL
6'-3"25'-0"
8-31-2021
10 GAUGE
THRIE BEAM SECTIONS
10 GAUGE
THRIE BEAM SECTIONS
GUARDRAIL ANCHORAGE, BRIDGE, DETAIL T1 (SEE NOTES, SHEET 7 OF 7)
ANCHORAGE, BRIDGE DETAILS T1, T4 & T6
FROM GUARDRAIL, TYPE MGS-8 TO GUARDRAIL
SPACING AND GUARDRAIL LAYOUT TO TRANSITION
* SEE STANDARD PLAN R-60-SERIES FOR POST
GUARDRAIL ANCHORAGE, BRIDGE, DETAIL T2 (SEE NOTES, SHEET 7 OF 7)
B.L.T.
W.K.P. R-67-SD
FOR EXISTING BRIDGE BARRIER RAILINGS
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT SPECIAL DETAIL FOR
P O
S T
P O
S T
P O
S T
P O
S T
P O
S T
P O
S T
RAILING, TYPE 5
BRIDGE BARRIER
PLAN VIEW
E3 JOINT
(4 SPACES) (3 SPACES)
3'-1½" POST SPACING3'-6" POST SPACING
1'-6¾"
15"
ELEVATION VIEW
SPECIAL END SHOE
BRIDGE BARRIER RAILING, TYPE 5
(WITHOUT EXPANSION AT BACKWALL)
DETAILS FOR CONNECTING GUARDRAIL TO BRIDGE BARRIER RAILINGS, TYPE 5
(TO BE USED WITH GUARDRAIL, TYPE B)
ELEVATION VIEW
BRIDGE BARRIER RAILING, TYPE 5
SPECIAL END SHOE
(4 SPACES) (3 SPACES)
3'-1½" POST SPACING 6'-3" POST SPACING
(2 SPACES)
6'-3" TYPICAL POST SPACING
37'-6"
3'-6" POST SPACING
1'-6¾"
15"
6'-3" TYPICAL POST SPACING
GUARDRAIL, TYPE T
GUARDRAIL, TYPE B
GUARDRAIL, TYPE MGS-8 *
INFORMATION)
FOR TYPE MGS-8 GUARDRAIL HEIGHT
(SEE STANDARD PLAN R-60-SERIES
34" TYPE T
(TO BE USED WITH GUARDRAIL, TYPE T & TYPE MGS-8)
GUARDRAIL ANCHORAGE, BRIDGE, DETAIL T3 (SEE NOTES, SHEET 7 OF 7)
25'-0"
10 GAUGE
TRANSITION
THRIE BEAM
SYMMETRICAL
6'-3"
10 GAUGE
TRANSITION
THRIE BEAM
SYMMETRICAL
6'-3"
10 GAUGE
TRANSITION
THRIE BEAM
SYMMETRICAL
6'-3" 12'-6"
18'-9"
10 GAUGE
THRIE BEAM SECTION
10 GAUGE
THRIE BEAM SECTIONS
THRIE BEAM EXPANSION SECTION
THRIE BEAM EXPANSION SECTION
(SEE NOTES, SHEET 7 OF 7)
GUARDRAIL ANCHORAGE, BRIDGE, DETAIL T4
ANCHORAGE, BRIDGE DETAILS T1, T4 & T6
FROM GUARDRAIL, TYPE MGS-8 TO GUARDRAIL
SPACING AND GUARDRAIL LAYOUT TO TRANSITION
* SEE STANDARD PLAN R-60-SERIES FOR POST
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
8-31-2021
R-67-SD
FOR EXISTING BRIDGE BARRIER RAILINGS
P
S T
P O
S T
P O
S T
P O
S T
P O
S T
P O
S T
RAILING, TYPE 4
BRIDGE BARRIER
PLAN VIEW
E3 JOINTEXPANSION JOINT
BRIDGE
(WITH EXPANSION AT BACKWALL)
(TO BE USED WITH GUARDRAIL, TYPE B)
ELEVATION VIEW
THRIE BEAM EXPANSION SECTION
THRIE BEAM TERMINAL CONNECTOR
BRIDGE BARRIER RAILING, TYPE 4
16"
(4 SPACES) (4 SPACES)
3'- 1½" POST SPACING
MAX (2 SPACES)
6'-3" POST SPACING
6'-3" TYPICAL POST SPACING
43'-9"
7'-10½" 6'-3" 12'-6"
3'-6"
MIN.
POST SPACING
1'-6¾"
ELEVATION VIEW
THRIE BEAM EXPANSION SECTIONTHRIE BEAM TERMINAL CONNECTOR
BRIDGE BARRIER RAILING, TYPE 4
16"
(4 SPACES) (4 SPACES)
3'-1½" POST SPACING
MAX
25'-0"
7'-10½" 6'-3" 12'-6"
POST SPACING
1'-6¾"
3'-6"
MIN.
GUARDRAIL, TYPE B
6'-3" TYPICAL POST SPACING
GUARDRAIL, TYPE T
(TO BE USED WITH GUARDRAIL, TYPE T & TYPE MGS-8)
GUARDRAIL, TYPE MGS-8 *
INFORMATION)
FOR TYPE MGS-8 GUARDRAIL HEIGHT
(SEE STANDARD PLAN R-60-SERIES
34" TYPE T
AESTHETIC PARAPET TUBE, OR 3 TUBE WITH PICKETS
BRIDGE BARRIER RAILINGS, TYPE 4, 2-TUBE, 4-TUBE,
DETAILS FOR CONNECTING GUARDRAIL TO
10 GAUGE
TRANSITION
THRIE BEAM
SYMMETRICAL
6'-3"37'-6"
GUARDRAIL ANCHORAGE, BRIDGE, DETAIL T5 (SEE NOTES, SHEET 7 OF 7)
GUARDRAIL ANCHORAGE, BRIDGE, DETAIL T1 (SEE NOTES, SHEET 7 OF 7)
10 GAUGE
THRIE BEAM SECTIONS
10 GAUGE
THRIE BEAM SECTIONS
ANCHORAGE, BRIDGE DETAILS T1, T4 & T6
FROM GUARDRAIL, TYPE MGS-8 TO GUARDRAIL
SPACING AND GUARDRAIL LAYOUT TO TRANSITION
* SEE STANDARD PLAN R-60-SERIES FOR POST
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
8-31-2021
R-67-SD
FOR EXISTING BRIDGE BARRIER RAILINGS
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
BUREAU OF DEVELOPMENT SPECIAL DETAIL FOR
15"
3'-1½" POST SPACING
15" 3'- 1½" POST SPACING
(4 OR 5 SPACES) (3 OR 4 SPACES)
SEE APPROACH POST SPACING REQUIREMENTS CHART
PIER
BRIDGE
FIRST POST
CONNECTOR
TERMINAL
THRIE BEAM
(4 OR 5 SPACES) (3 OR 4 SPACES)
6'-3" TYPICAL POST SPACING
PIER
BRIDGE
3'-1½"
FIRST POST
CONNECTOR
TERMINAL
THRIE BEAM
SEE APPROACH POST SPACING REQUIREMENTS CHART
6'-3" TYPICAL POST SPACING
PIER
BRIDGE
FILLER WALL END BLOCK
AND FILLER WALLS, SHEET 5 OF 7)
REQUIREMENTS FOR CONNECTING GUARDRAIL TO BRIDGE RAILINGS
INSTALL BOLTS THROUGH FILLER WALL (SEE CHART FOR BOLT
BOLTS TO FIRST POST
DISTANCE FROM ANCHOR
7'-11¾" 11'-1¼"
PLAN VIEW
ELEVATION VIEW
ELEVATION VIEW
DETAILS FOR CONNECTING GUARDRAIL TO FILLER WALLS
APPROACH POST SPACING REQUIREMENTS
GUARDRAIL, TYPE TGUARDRAIL ANCHORAGE, BRIDGE, DETAIL T-6 (SEE NOTES, SHEET 7 OF 7)
(TO BE USED WITH GUARDRAIL, TYPE T)
GUARDRAIL, TYPE BGUARDRAIL ANCHORAGE, BRIDGE, DETAIL T-5 (SEE NOTES, SHEET 7 OF 7)
(TO BE USED WITH GUARDRAIL, TYPE B)
MIN.
MIN.
DEPTH 1'-3" FROM BRIDGE PIER.
POST CAN BE INSTALLED FULL
OMITTED WHEN FIRST ANCHORAGE
NOTE: FILLER WALL END BLOCK MAY BE
POST SPACINGS
NUMBER OF 1'-6¾"
POST SPACINGS
NUMBER OF 3'-1½"
9'-6½"
1'-6" POST SPACING
1'-6¾"
BLOCKS LESS THAN 3'-0" LONG)
NOT REQUIRED FOR FILLER WALL END
ROUND WASHERS ON BACK (BOLTS ARE
POST BOLT WASHERS ON FRONT AND
TWO ⅝" DIA. x 14" POST BOLTS WITH
POST SPACING
1'-6¾"
1'-6"
ELEMENT AS SHOWN ABOVE.
3'-0" OR LONGER, BOLT BEAM
WHEN FILLER WALL END BLOCK IS
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
8-31-2021
R-67-SD
FOR EXISTING BRIDGE BARRIER RAILINGS
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT SPECIAL DETAIL FOR
10 GAUGE
TRANSITION
THRIE BEAM
SYMMETRICAL
6'-3"
43'-9"
37'-6"
10 GAUGE
THRIE BEAM SECTIONS
37'-6"
10 GAUGE
THRIE BEAM SECTIONS
TYPE 4
TYPE 5
2 TUBE
4 TUBE
FILLER WALL**
3. WHEN CONDITIONS PROHIBIT THE USE OF BOLTS.
VARIABLE
OR SIDEWALK
TOP OF CURB
1"
7½"
6½"
3"
6½"
3"
7¼"
BRIDGE RAILING BOLT LENGTH
THREAD LENGTH
MINIMUM
REQUIRED
NUMBER
POST 3
RAILING, TYPE 4
BRIDGE BARRIER
POST 1 FOR
RAILING, TYPE 5
BRIDGE BARRIER
POST 1 FOR
POST 6POST 5POST 4
RAILING, TYPE 4
BRIDGE BARRIER
POST 2 FOR
RAILING, TYPE 5
BRIDGE BARRIER
POST 2 FOR
GUARDRAIL POST SECTIONS FOR GUARDRAIL ANCHORAGE, BRIDGE
GUARDRAIL TO BRIDGE RAILINGS & FILLER WALLS
BOLT REQUIREMENTS FOR CONNECTING
THICKNESS THAN THE FILLER WALL EXTENSION.
1. AT OR NEAR THE JOINT LINE WHEN A FILLER WALL IS A DIFFERENT
NOTE: ADHESIVE ANCHORS SHALL BE SELECTED FROM THE QUALIFIED PRODUCTS LIST OF THE MATERIALS SAMPLING GUIDE.
NUMBER REQUIRED.) WASHER DETAILS ARE SHOWN ON SHEET 6 OF 7.
AND SQUARE WASHERS ON BACK. (SEE CHART BELOW FOR LENGTHS AND
CONNECT GUARDRAIL TO BRIDGE RAILINGS WITH ROUND WASHERS ON FRONT
HIGH STRENGTH ⅞" DIA. HEX HEAD BOLT AND NUTS SHALL BE USED TO
8" 8"
8" 8" 8"
WALL THICKNESS + 2"
WALL THICKNESS + 2"
WALL THICKNESS + 2"
¼" BEYOND THE NUT WHEN TIGHTENED.
SHORTER BOLT LENGTHS MAY BE USED PROVIDED THE BOLT EXTENDS
4"
4"
2"
2"
2"
8"8"
8"
2. IN EXISTING FILLER WALLS THICKER THAN 1'-6".
1⅞" 1½"
2¼"2⅝"2⅝"
6" 7"
" 3
⅜
11½"
12½"
THROUGH THE FILLER WALL, IN THE FOLLOWING LOCATIONS:
GUARDRAIL TO FILLER WALLS WILL BE ALLOWED, INSTEAD OF BOLTING
THE USE OF ⅞" DIA. ADHESIVE ANCHORED BOLTS EMBEDDED 8" TO ATTACH
SECTIONS AT BRIDGE RAILINGS
RAILING TYPE 4
BRIDGE BARRIER
RAILING TYPE 5
BRIDGE BARRIER
(WITHOUT SIDEWALK OR BRUSH BLOCK) (WITH SIDEWALK)
(ROADWAY)
TOP OF SLAB
(ROADWAY)
TOP OF SLAB
(ROADWAY)
TOP OF SLAB
(ROADWAY)
TOP OF SLAB
AESTHETIC PARAPET
WALL THICKNESS + 2" 2" 5
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
8-31-2021
R-67-SD
FOR EXISTING BRIDGE BARRIER RAILINGS
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT SPECIAL DETAIL FOR
AESTHETIC PARAPET TUBE
3 TUBE WITH PICKETS OR
BRIDGE RAILING, 4 TUBE,
OR AESTHETIC PARAPET TUBE
4 TUBE, 3 TUBE WITH PICKETS
BRIDGE RAILING, 2 TUBE,
AESTHETIC PARAPET TUBE
PICKETS, DOES NOT APPLY TO
4 TUBE, 8" FOR 3 TUBE WITH
7" FOR 2 TUBE, 9" FOR
TO AESTHETIC PARAPET TUBE
PICKETS, DOES NOT APPLY
4 TUBE, AND 3 TUBE WITH
9" OR LESS FOR 2 TUBE,
SPACING SHALL BE AS SHOWN IN ELEVATION VIEWS.
BRIDGE RAILINGS SHALL BE THE SAME AS THAT SHOWN ON POST 6. POST
THE 2 TUBE, 4 TUBE, 3 TUBE WITH PICKETS AND AESTHETIC PARAPET TUBE
POST AND BLOCK SECTIONS FOR THE SINGLE FACE, CONCRETE BARRIER, AND
NOTE:
5WALL THICKNESS + 2" 2"3 TUBE WITH PICKETS
3⅜"
1�"
NEUTRAL AXIS
8½"
THRIE BEAM EXPANSION SECTION
4"
SPLICE BOLT SLOT (TYP.)
x 1⅛" 4¼" 4¼" 2"
6¼"
1'-6¾"
AS THRIE BEAM ELEMENT
SAME CROSS SECTION
POST BOLT SLOTS
¾" x 2½"
7" 12'-6"
¾" x 3¾" SLOTTED HOLES SPACED AT 1'-6¾"
SLOTTED HOLE (TYP.)
x 5"
⅞" DIA. BOLTS
ROUND WASHER FOR
�" DIA. HOLE
2¼" DIA.
⅞" DIA. BOLTS
SQUARE WASHER FOR
�" DIA. HOLE
¼"
3"
1½"
½
3"+
2"
8½"
7¼"3"
MIN.
3⅜"
2'-6"
4"4"
(TYP.)
1" DIA. HOLES
1�"
4"
⅜
BRIDGE RAILING
AVOID STEEL REINFORCEMENT IN
1" DIA. HOLES WHEN NEEDED TO
DRILL (DO NOT BURN) ADDITIONAL
¾
½
½
¾
NEUTRAL AXIS
¼
¼
⅝
" 1
⅜
3"+
3"8½"2" 8"
2'-6"
⅝
⅝
3⅜"
1�"
NEUTRAL AXIS
7¼"
SPECIAL END SHOE
\ BEAM ELEMENT
\ x 5" SLOTS
(OPTIONAL)
POST BOLT SLOT
¾" x 2½"
(TYP.)
1" DIA. HOLES
(OPTIONAL)
POST BOLT SLOT (TYP.)
¾" x 2½"
(TYP.)
SPLICE BOLT SLOT
x 1⅛"
THRIE BEAM TERMINAL CONNECTOR
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
8-31-2021
R-67-SD
FOR EXISTING BRIDGE BARRIER RAILINGS
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
BRIDGE SPANS A BRIDGE EXPANSION JOINT.
SEE APPROPRIATE PLANS TO DETERMINE WHETHER GUARDRAIL ANCHORAGE,
FILLER WALL END BLOCK.
SEE THE CURRENT STANDARD PLAN R-55-SERIES FOR FILLER WALLS AND
BE LAPPED IN EITHER DIRECTION.
TRAFFIC, EXCEPT FOR THE THRIE BEAM TERMINAL CONNECTOR WHICH MAY
GUARDRAIL BEAM ELEMENTS SHALL BE LAPPED IN THE DIRECTION OF
USE IN ANCHORAGE SHALL BE FIELD BENT.
SECTIONS OF THE THRIE BEAM ELEMENT REQUIRED TO BE TWISTED FOR
STANDARD.
PLAN R-60-SERIES, WHERE APPLICABLE, EXCEPT AS SPECIFIED ON THIS
THE CURRENT STANDARD SPECIFICATIONS AND TO THE CURRENT STANDARD
HARDWARE, (INCLUDING BOLTS, NUTS, AND WASHERS) SHALL CONFORM TO
ALL POSTS, OFFSET BLOCKS, BEAM ELEMENTS, REFLECTORS, AND
FACE, TYPE __".
SEE STANDARD PLAN R-54-SERIES FOR "CONCRETE BARRIER, SINGLE
TYPE __".
INCLUDED IN THE PAY ITEM "CONCRETE BARRIER, SINGLE FACE,
CONCRETE BARRIER, SINGLE FACE TRANSITION SECTION SHALL BE
GAUGE MUST MEET CLASS B REQUIREMENTS PER AASHTO M 180.
REQUIREMENTS PER AASHTO M 180. BEAM ELEMENTS IDENTIFIED AS 10
BEAM ELEMENTS IDENTIFIED AS 12 GAUGE MUST MEET CLASS A
COLD CHISEL, SO THAT IT WILL NOT LOOSEN.
FIRST THREAD ON THE OUTSIDE OF THE NUT WITH A CENTER PUNCH OR
BEYOND THE NUT. THIS SHALL BE FOLLOWED UP BY UPSETTING THE
ENGAGE THE SPLICE BOLT WITH A MINIMUM OF ONE THREAD EXTENDING
SPLICE BOLT NUT SHALL BE INSTALLED FINGER-TIGHT AND SHALL FULLY
SPLICING THE SPECIAL END SHOE TO THE TRANSITION SECTION. THE
TERMINAL CONNECTOR TO THE THRIE BEAM EXPANSION SECTION AND WHEN
SPLICE BOLTS SHALL BE USED WHEN SPLICING THE THRIE BEAM
NOT BE LIGHTER THAN 10 GAUGE (0.138").
BE THE SAME MATERIAL AS ADJACENT RUN OF GUARDRAIL, AND SHALL
THE THRIE BEAM TERMINAL CONNECTOR AND SPECIAL END SHOE SHALL
W6 x 9) OR WOOD POSTS (6" x 8").
T1 THROUGH T6, SHALL BE 7'-0" LONG STEEL POSTS (W6 x 8.5 OR
ALL POSTS USED TO CONSTRUCT GUARDRAIL ANCHORAGE, BRIDGE, DETAIL
SECTION.
�" x 5" LONG SLOTTED HOLES IN THE THRIE BEAM EXPANSION
THAT THE THRIE BEAM TERMINAL CONNECTOR BE ATTACHED TO THE
GUARDRAIL ANCHORAGE, BRIDGE, DETAILS T1, T2, AND T5 REQUIRE
BRIDGE, DETAILS
GUARDRAIL ANCHORAGE,
8-31-2021
R-67-SD
FOR EXISTING BRIDGE BARRIER RAILINGS
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
SHEET
PLAN DATEF.H.W.A. APPROVALCHECKED BY:
DRAWN BY:
Michigan Department of Transportation
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
APPROVED BY:
APPROVED BY:
Paul C. Ajegba
BY
PREPARED
DESIGN DIVISION DIRECTOR, BUREAU OF FIELD SERVICES
DIRECTOR, BUREAU OF DEVELOPMENT
APPROVED BY:
DIRECTOR, BUREAU OF BRIDGES AND STRUCTURES
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B.L.T.
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TH RIE BEA M RETROFIT
BRIDGE RAILIN G,
10-23-2019
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TH RIE BEA M RETROFIT
BRIDGE RAILIN G,
10-23-2019
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3 6
TH RIE BEA M RETROFIT
BRIDGE RAILIN G,
10-23-2019
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PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
4 6
TH RIE BEA M RETROFIT
BRIDGE RAILIN G,
10-23-2019 B-23-F
EXPANSION SECTION
THRIE BEAM
ROU N D W ASH ER SQU A RE W ASH ER
PRIOR TO BEING GALVANIZED
WELDED FLUSH TO END OF THREADED STUD
NUT SHALL FULLY ENGAGE THREADS AND BE
BACKWALL
EXISTING
RETU RN W IN G W ALLS
AT PIER OR A BU TM EN T W ITH
SLOPEW ALLS
AT A BU TM EN T W ITH
ELEV ATION SH OW IN G TH RIE BEA M RETROFIT OVER BRIDGE EXPA N SION JOIN TS
W ASH ERS U SED W ITH 7/8" DIA. STU DS 7/8" DIA. TH REA DED STU D
LIE BETWEEN THE SLOTTED SPLICE AND THE BRIDGE EXPANSION JOINT.
LAG SCREWS IN THRIE BEAM EXPANSION SECTION AT POST BLOCKOUTS THAT
PLACE 1" x 5" SLOTS FOR POST STUDS AND ƒ" x 5" SLOTS FOR
IN BEAM, BLOCKOUT AND RAILING POST
\ WOOD BLOCKOUT AND \ 1" DIA. HOLES
ž " x 5" SLOTS (TYP.)
EXPANSION SPLICE WITH BRIDGE EXPANSION JOINT EXPANSION SPLICE
BRIDGE EXPANSION JOINT
5"
1'-6"
PROPOSED CONCRETE RAILING POST
1ƒ" DIA. • " DIA. HOLE
• " DIA. HOLE
1•"
3"
LENGTH AS NEEDED
3" MIN.
(OPEN PA RAPET TY PE BRIDGE RAILIN G)
LENGTH
BRIDGE RETROFIT
SPLICE
\ PROPOSED
SK ETCH FOR RETROFITTIN G BETW EEN TW O EXISTIN G RU N S OF G U A RDRAIL
X Y
Z
Z Z
Z
REMOVE ALL EXISTING GUARDRAIL BETWEEN EXISTING SPLICES
BRIDGE RAILING LENGTH
BETWEEN TWO EXISTING RUNS OF GUARDRAIL
INSTRUCTIONS FOR LAYING OUT RETROFIT
SPLICE BACK TOWARD THE BRIDGE.
1. MEASURE THE APPROPRIATE "Z" DISTANCE FROM ONE END OF THE BRIDGE RAILING AND LOCATE THE FIRST EXISTING
3. REPEAT STEPS 1 AND 2, FROM OPPOSITE END OF THE BRIDGE TO OBTAIN "Y" DIMENSION.
THIS DIMENSION WILL VARY FROM 0 TO 12'-6".
2. FROM THIS SPLICE, MEASURE THE SAME "Z" DISTANCE BACK TOWARD THE BRIDGE TO OBTAIN THE "X" DIMENSION.
4. SUBTRACT THE SUM OF "X" + "Y" FROM BRIDGE RAILING LENGTH. THIS WILL BE THE BRIDGE RETROFIT LENGTH.
THE REMAINDER WILL BE THE LENGTH OF A SHORTENED ELEMENT.
5. DIVIDE THE BRIDGE RETROFIT LENGTH BY 12'-6" TO OBTAIN THE NUMBER OF BEAM ELEMENTS PLUS A REMAINDER.
IN STEP 5.
RETROFIT WILL CONTAIN TWO SHORTENED BEAM ELEMENTS WITH ONE LESS 12'-6" BEAM ELEMENT THAN CALCULATED
6. WHEN THE REMAINDER IS LESS THAN 2'-6", ADD 12'-6" TO THE REMAINDER AND DIVIDE BY TWO. THE BRIDGE
Z = 56'-3" WHEN CONNECTING TO BEAM GUARDRAIL, TYPE B. USE GUARDRAIL ANCHORAGE, BRIDGE, DETAIL A5
Z = 50'-0" WHEN CONNECTING TO BEAM GUARDRAIL, TYPE T. USE GUARDRAIL ANCHORAGE, BRIDGE, DETAIL A4
Z = 50'-0" WHEN CONNECTING TO BEAM GUARDRAIL, TYPE MGS-8. USE GUARDRAIL ANCHORAGE, BRIDGE, DETAIL A3
GUARDRAIL
* EXISTING
SPLICE *
\ EXISTING
GUARDRAIL
* EXISTING
AND A 6'-3" POST SPACING.
POSTS WITH GUARDRAIL TYPE MGS-8
BE LOCATED AT MIDSPAN BETWEEN
DIAGRAM. SPLICE LOCATION WILL
6'-3" POST SPACING DEPICTED IN
* GUARDRAIL TYPE B OR TYPE T WITH
12 GAUGE
SECTIONS
THRIE BEAM
TWO NESTED
REF. LINE
BRIDGE
(REFER TO SHEETS 1 THROUGH 3)
THRIE BEAM EXPANSION SECTION(S)
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
5 6
TH RIE BEA M RETROFIT
BRIDGE RAILIN G,
10-23-2019 B-23-F
(OPEN PA RAPET TY PE BRIDGE RAILIN G)
BRIDGE CURB
FRONT FACE OF
MAX.
BEAM ELEMENT
ADDED GUARDRAIL POST
REFERENCE LINE
1'-6ƒ"
PLA N OF A DDITION AL POST DETAIL
FRONT FACE OF APPROACH CURB
IMMEDIATELY ADJACENT TO STRUCTURE
BLOCK AND OFFSET BLOCK (AS SHOWN)
ELEMENT AND PLACE AN ADDITIONAL POST,
ADDITIONAL HOLES FOR POST BOLTS IN BEAM
WHEN THIS DISTANCE EXCEEDS 3'-1•", DRILL
STRUCTURE REFERENCE LINE
FOR 3'-1•" POST SPACING BEYOND
FIRST SET OF POST BOLT SLOTS
MAINTAINING REQUIRED POST SPACING.
OFFSET BLOCK WIDTH TO LOCATE POST WHILE
IT MAY BE NECESSARY TO INCREASE THE 12"
FOR BRIDGES SKEWED IN DIRECTION SHOWN,
2 SPACES (MINIMUM) @ 3'-1•" 4 SPACES (MINIMUM) @ 1'-6ƒ"
WOOD BLOCKOUTS
RAILING END POST
OPEN-PARAPET BRIDGE
5"<
AS NEEDED
DEPTH
ON BLOCK
CENTER HOLES
FRON T SIDE
W OOD BLOCK OU T DETAIL
DIA. HOLES
* DRILL 1"
FOR LAG SCREW
* DRILL •" DIA. HOLE
SEPARATE
OF BLOCK MAY BE
PROJECTING PORTION
SECTION THRU 1'-10" HIGH PARAPET RAILING
PARAPET RAILING. WHERE REQUIRED, SEE
* NOTE: HOLE LOCATIONS SHOWN ARE FOR 2'-3" HIGH
COMBINATION OF SEPARATE BLOCKS
WOOD BLOCKOUTS MAY BE MADE FROM A
M
IN
MIN.
H E
IG
H
T A
S N
E E
D E
D
6" 1•"
3" DIA. x 1" DEEP COUNTERSINK
BACKWALL
EXISTING
FASCIA
SIDEWALK
EXISTING
ELEV ATION
A A
REFERENCE LINE
BRIDGE
R E
Q 'D
A S
REFERENCE LINE
BRIDGE
SECTION A - A
CON CRETE RAILIN G POST DETAIL
OR FORMED)
POST (MAY BE DRILLED
\ 1" DIA. HOLES IN
#6 BARS (TYP.)
EPOXY ANCHORING
\ 9" DEEP HOLE FOR
(2'-8" LONG)
5 - #6 BARS
5"
#6 BARS
3"
1'-6"
3"
2-EQUAL SPACES
T
IE
B A
R S
1'-6"
3"
2-EQUAL SPACES
3"
#4 TIE BAR
THRIE BEAM ELEMENT
SAME CROSS SECTION AS
8•" 2"
4‚"
3…"
7" 12'-6" 6‚"
4"
SLOTTED HOLES
ž " x 5"
SLOTTED HOLES
ž " x 1„"
POST BOLT SLOTS
ƒ" x 2•"
1'-6ƒ" <SPACED AT 1'-6ƒ" < ƒ" x 3ƒ" SLOTTED HOLES
TH RIE BEA M EXPA N SION SECTION
6 6
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
TH RIE BEA M RETROFIT
BRIDGE RAILIN G,
10-23-2019 B-23-F
(OPEN PA RAPET TY PE BRIDGE RAILIN G)
(SEE WOOD BLOCKOUT DETAIL)
DEPTH AS NEEDED
CURB
FLUSH WITH
SECTION S TH RU PA RAPET RAILIN G
MIN.
(SEE NOTES)
WASHERS
REFLECTORIZEDNEEDED
DEPTH AS
REINFORCEMENT
TO AVOID
MAY BE ANGLED1" TO 3"
BEH IN D 6" OR 9" W IDE BRU SH BLOCK
1'-10" H IG H PA RAPET RAILIN G
BEH IN D 6" OR 9" W IDE BRU SH BLOCK
2'-3" H IG H PA RAPET RAILIN G
BEH IN D 1'-6" TO 2'-6" W IDE BRU SH BLOCK
2'-3" H IG H PA RAPET RAILIN G
WIDE BRUSHBLOCKS.
SHOWN FOR 6" OR 9"
STUDS AND LAG SCREWS AS
HEIGHT IS 1'-10", PLACE
WHERE PARAPET RAILING
6" & 9" ƒ
SQUARE WASHERS UNDER OUTSIDE NUTS.
WITH ROUND WASHERS UNDER WELDED NUTS AND
BRIDGE RAILING. \ ‡" DIA. THREADED STUDS
\ 1" DIA. HOLE IN BEAM, WOOD BLOCKOUT AND
WITH ROUND WASHER
GALVANIZED LAG SCREW
AND \ †" DIA. x 5•"
\ ƒ" DIA. HOLE IN BEAM
WITH ROUND WASHER
GALVANIZED LAG SCREW
AND \ †" DIA. x 2•"
\ ƒ" DIA. HOLE IN BEAM
(SEE NOTES)
WASHERS
REFLECTORIZED
HEIGHT
CURB
EXISTING
HEIGHT
CURB
EXISTING
(SEE NOTES)
WASHERS
REFLECTORIZED
HEIGHT
CURB
EXISTING
WITH ROUND WASHER
GALVANIZED LAG SCREW
AND \ †" DIA. x 6"
\ ƒ" DIA. HOLE IN BEAM
WOOD BLOCKOUT
1" TO 3"
6"
6" & 9"
1'-6" TO 2'-6"
6ƒ"
MAX.
(SEE WOOD
BLOCKOUT
DETAIL)
ƒ
1" TO 3"
STANDARD SPLICE BOLTS.
SHALL BE ATTACHED AT UPPER POST BOLT SLOTS WITH
25'-0" INTERVALS AT BEAM ELEMENT SPLICES. THEY
REFLECTORIZED WASHERS SHALL BE SPACED AT
SECTIONS 807 & 908 OF THE STANDARD SPECIFICATIONS.
ALL WORK AND MATERIALS SHALL BE IN ACCORDANCE WTH
SHOWN ON THIS PLAN.
PLAN R-60 SERIES, WHERE APPLICABLE, EXCEPT AS
ANCHORAGES SHALL CONFORM TO THE CURRENT STANDARD
BRIDGE RAILING, THRIE BEAM RETROFIT AND GUARDRAIL
APPROACH GUARDRAIL.
EXISTING OPEN-PARAPET TYPE BRIDGE RAILINGS AND
THIS STANDARD IS INTENDED FOR USE IN UPGRADING OF
STANDARD.
AND LAST BLOCK ON HEADWALL AS DETAILED ON THIS
OF 10'-7ƒ" OR LESS CENTER TO CENTER. PLACE FIRST
BLOCKOUTS FOR THRIE BEAM GUARDRAIL AT A DISTANCE
FOR PRECAST THREE SIDED OR ARCH CULVERTS SPACE
TYPICAL SECTION AT CRT POST
W.K.P.
B.L.T.
TRUNKLINE
R A
D I
E C I
F I
A N
S
W I
D
Q
U
A R
D R
A I
L
SPECIFIED ON PLANS
GUARDRAIL RADIUS AS
8" 2'-0"
1:2 MAX.GROUND LINE
1:10 OR FLATTER
NUT (NO WASHER)
HEAD BOLT WITH
†" x 9" BUTTON
RADIUS SPECIFIED ON PLANS
LENGTH EQUAL TO GUARDRAIL
CRT POST
C R
O S
S R
O
C
T
P
O S
E I
N C L U
D E
D I N
T H E
P
A Y
IT
EM
FOR
CURVED
BEAM G
UARDRAIL
GUARDRAIL AT INTERSECTIONS
DETAIL
SPECIAL
1 2
DEPARTMENT DIRECTOR MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVALCHECKED BY:
DRAWN BY:
Michigan Department of Transportation
BUREAU OF DEVELOPMENT SPECIAL DETAIL
APPROVED BY:
APPROVED BY:
Kirk T. Steudle
BY
PREPARED
DESIGN DIVISION
DIRECTOR, BUREAU OF FIELD SERVICES
DIRECTOR, BUREAU OF DEVELOPMENT
B EPYT ,LIARDRAUG FO NOITROP DEVRU
O
I
C A
S
C
GUARDRAIL, TYPE MGS-8 *
GUARDRAIL, TYPE T
GUARDRAIL, TYPE B
GUARDRAIL ANCHORAGE, BRIDGE
TO TRANSITION FROM GUARDRAIL, TYPE MGS-8 TO GUARDRAIL, TYPE B.
* SEE STANDARD PLAN R-60-SERIES FOR POST SPACING AND GUARDRAIL LAYOUT
S
A N
D A
S E
R I
E S
G U
A R
D R
A I
P R
O A
R M I
N A
Y
P E
M
F R
M
A R
D R
A I
I
G
A N
S I
T I
O N
WILL BE PAID FOR AS GUARDRAIL, DEPARTING TERMINAL.
DEPARTING END TERMINAL ON STANDARD PLAN R-66-SERIES. THIS
PLATE AND INSTALL A CABLE ANCHOR SIMILAR TO THAT OF THE
8 HOLES IN THE CURVED BEAM GUARDRAIL TO ACCOMODATE AN ANCHOR
THAT A TYPICAL DEPARTING END TERMINAL CANNOT BE FIT IN, DRILL
(SEE STANDARD PLAN R-66-SERIES). IF R.O.W. IS LIMITED SUCH
FOR DRIVEWAYS, IF R.O.W. ALLOWS, USE DEPARTING END TERMINAL.
NOTE:
PLAN VIEW
4-9-2018
G U
A R
D R
A I
P R
O A
R M I
N A
P E
M
GUARDRAIL AT INTERSECTIONS
DETAIL
SPECIAL
2 2
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT SPECIAL DETAIL
( CRT )
CONTROLLED RELEASING TERMINAL POST
6"
3"
8"
4" ƒ" DIA. HOLE
3•" DIA. HOLES
HINGE LINE SHALL BE 1:2 OR FLATTER.
EXTEND TO 2'-0" BEYOND THE GUARDRAIL POST. THE SLOPE BEYOND THIS
THE SLOPE IN FRONT OF THE INSTALLATION SHOULD NOT EXCEED 1:10 AND
FREE OF FIXED OBJECTS.
THE CROSS HATCHED AREA BEHIND THE CURVED GUARDRAIL SHOULD BE KEPT
4-9-2018
File details come from the government source that posted it. Updated .