6’-3"6’-3" 6’-3"

PLAN

ELEVATION

6’-3" 6’-3"

SLOPE 10:1

OR FLATTER

5’-0" MIN.

25:1 FLARE

EDGE OF SHOULDER

OR FLATTER

SLOPE 10:1

POST NO. 1POST NO. 2

POST NO. 5POST NO. 8POST NO. 9

OR FLATTER

5’-0" MIN.

TO HINGE

POINT

SLOPE

10:1 MAX.

2’-0" OFFSET TO

FACE OF RAIL

2

AA

BB

CC

SECTION B-BSECTION A-A

POINT

HINGE

SLOPE 4:1

TO HINGE POINT

SHOULDER

HINGE POINT

SHOULDER

EDGE OF SHOULDER

TYPICAL AT POST NO. 1

POST NO. 7 POST NO. 6

6’-3"

TYPICAL AT POST NO. 2

6’-3"6’-3" 6’-3"

PLAN

6’-3"

SLOPE 10:1

OR FLATTER

25:1 FLARE

EDGE OF SHOULDER

OR FLATTER

SLOPE 10:1

POST NO. 1POST NO. 2

POST NO. 8POST NO. 9

TO HINGE

POINT

SLOPE

10:1 MAX.

2’-0" OFFSET TO

FACE OF RAIL

2

AA

BB

CC

SECTION B-B

POINT

HINGE

SLOPE 4:1

PARALLEL WITH

TRAVELED WAY

2’-0" OFFSET TO

FACE OF RAIL

SLOPE4:1 TAPER

(AT

PO

ST

NO 5)

6’-3" 6’-3"

SLOPE 10:1

TO HINGE POINT

5’-

4"

VARIABLE SLOPE

2’-0"

4"

(AT POST NO. 9)

DIRECTION OF

TRAFFIC

**

* *

SEE DETAIL "A"

SEE DETAIL "B"

C

C

ELEVATION

FINISHED GROUND

THE FINISHED SURFACE

FLUSH WITH AND PARALLEL TO

BOTTOM OF STRUT IS PLACED

A

B

DETAIL "A"

F

�"

7"

31"

OR FLATTER

1’-4"

HINGE POINT

SLOPE 10:1

SECTION C-C

OR FLATTER

1’-4"

HINGE POINT

SLOPE 10:1

2’-0" TO 3’-0" VAR.

4:1 TAPER LINE

TRANSITION TO

31"

31"

DEPARTMENT OF TRANSPORTATION

STATE OF WISCONSIN

66

POST BOLT (TYP.)

3

3’-1�"

(MGS)

ENERGY ABSORBING TERMINAL

MIDWEST GUARDRAIL SYSTEM

A

B

C

F

APPROACH END OF THE ENERGY ABSORBING TERMINAL.

DO NOT INSTALL REFLECTORS ON THE FIRST 50 FEET OF THE

DO NOT ATTACH BLOCKOUTS TO POSTS 1 AND 2.

H

SEE SDD 14B42 FOR MORE INFORMATION.

MANUFACTURE’S DRAWING FOR INFORMATION.

HARDWARE VARIES BETWEEN DIFFERENT MANUFACTURES. SEE

RAIL END PANELS. SEE MANUFACTURES INFORMATION.

DIFFERENT MANUFACTURES REQUIRE DIFFERENT PERFORATED W-BEAM

AND HAS NOT RELAXED.

AFTER FINAL ASSEMBLY, RECHECK CABLE TO BE SURE IT IS TAUT

GENERAL NOTES

GUARD (MGS)

MGS BEAM

DETAILS)

(SEE OTHER

TYPICAL AT POST NOS. 3-9

3

4

11

*

POST BOLT (TYP.)

12108

9

7

12

6

5

3 3

POST NO. 4

3

8 1010

9

(TYP.)

POST BOLT

15 1

162

3 3 3

1111

12

10

10

10 OR

3 �" HOLES

SYSTEM LENGTH = 53’-1�"

SPLICE LOCATION

SEE NOTES FOR

S.D.D. 14

B

44-3a

S.D.D. 14

B

44-3a

GRADELINE

(CZL) SHALL BE 4:1 OR FLATTER.

THE HINGE POINT LINE (HPL), AND THE CLEAR ZONE LIMITS

THE SLOPE IN THE AREA BOUNDED BY THE GRADELINE,

(OPTIONAL)

4" POSTS 1-4

STEEL SELF-TAPPING SCREWS. ONE SCREW PER CORNER.

ATTACH ALUMINUM SHEET TO E.A.T. HEAD USING 4 STAINLESS

OR FLATTER

A15:1 TAPER

POST NO. 1POST NO. 2 ** DETAIL "B"

HINGE POINT LINE

6

SLOPE

CLEAR ZONE LIMITS, EITHER AS SHOWN ELSEWHERE IN THE PLANS OR, IF NOT SHOWN ELSEWHERE IN THE PLANS, 15 FEET BEYOND THE HINGE POINT LINE

POST NO. 3

MAXIMUM OF 2" ABOVE GROUND LINE.

THROUGH POST 9 IS TO BE FLUSH WITH THE GROUND LINE UP TO A

THE CENTER OF THE UPPER 3�" DIAMETER HOLE ON POST NUMBER 3

W5-59

1

SLOPE

NORMAL

1’-0"

13

4’-0"

POST NO. 1

PLACED BEHIND

EAT MARKER POST

SOIL PLATE

14

14

DIMENSIONS AND INSTALLATION INSTRUCTIONS.

SEE MANUFACTURER’S DRAWING FOR SPLICE LOCATION, HARDWARE

16

15

GRADE

BELOW

MIN.

1’-6"

14B44 sheet a: Midwest Guardrail System (MGS) EAT

HOLE

1 �" |

CABLE RELEASE

PLATE

HOLE

1 �" |

CABLE RELEASE

PLATE

HOLE

1 �" |

CABLE RELEASE

PLATE

DEPARTMENT OF TRANSPORTATION

STATE OF WISCONSIN

66

H

H

GENERIC ANCHOR CABLE BOX

GENERIC GROUND STRUT

(MGS)

ENERGY ABSORBING TERMINAL

MIDWEST GUARDRAIL SYSTEM

PART

NO.

DESCRIPTION

2

7

8

9

10

11

12

BILL OF MATERIALS

3

BCT CABLE ASSEMBLY

1

4

5

6 BEARING PLATE

MATERIALS PROVIDED BY MGS EAT MANUFACTURER.

SEE MANUFACTURER’S DETAILS FOR MORE INFORMATION.

WOOD BLOCKOUT

PIPE SLEEVE

ANCHOR CABLE BOX

GROUND STRUT

PERFORATED W-BEAM RAIL END PANEL, 12’-6" LONG.

SECTIONS VARY IN LENGTH.

STANDARD W-BEAM RAIL. MULTIPLE SECTIONS REQUIRED.

9

8

6

BEARING PLATE

WOOD CRT

S.D.D. 14

B

44-3

bS.D.D. 14

B

44-3

b

4"

5"

A

CABLE ASSEMBLY

8"

8"

A

CABLE ASSEMBLY

8"

8"

FRONT VIEW

CABLE ASSEMBLY

SECTION A-A

(SEE APPROVED PRODUCTS LIST)

EAT MARKER POST - YELLOW 13

IMPACT HEAD

14 SOIL PLATE

UPPER POST NO. 1 6" X 6" TUBE

LOWER POST NO. 1

15

16

UPPER POST NO. 2

LOWER POST NO. 2

14B44 sheet b: Midwest Guardrail System (MGS) EAT Ground Strut, Anchor Cable Box

REQ’D. AT ALL POSTS EXCEPT POST NO’S 1 & 2

18"

18"

45°

R

L

45°

6"

HOLE

�" DIA.

12"

1’-2�"7�"

DEPARTMENT OF TRANSPORTATION

STATE OF WISCONSIN

APPROVED

DATE

FHWA

66

UPPER POST NO. 1

H

(MGS)

ENERGY ABSORBING TERMINAL

MIDWEST GUARDRAIL SYSTEM

1’-0"

6"

8"

4"

BLOCKOUT DETAIL

ALTERNATE WOOD

HEAD NAILS

16D DOUBLE

DETAILS

SEE OTHER

BLOCKOUT 2

ALTERNATE

BLOCKOUT 1

ALTERNATE

BLOCKOUT 2

ALTERNATE

BLOCKOUT 1

ALTERNATE

TOP VIEWSIDE VIEW

4

WOOD BLOCKOUT

8" 6"

7"

�" | HOLE

6’-

0"

3 �" | HOLES

1’-4"

2’-

8"

3

WOOD CRT POST

I

I

POSTS NUMBER 3-9

S.D.D. 14

B

44-3c S

.D.D. 14

B

44-3c

UNIT SUPERVISOR

ROADWAY STANDARDS DEVELOPMENT

W5-59

REFLECTIVE SHEETING DETAIL

FRONT VIEW SIDE VIEW

POST (YELLOW)

E.A.T. MARKER

E.A.T. MARKER POST13

SPECIFICATION 637.

SEE STANDARD

SHEETING 3" X 9".

YELLOW REFLECTIVE

TYPE H

5’-6"

UPPER POST NO. 2 LOWER POST NO. 215

16

1

LOWER POST NO. 12

14

June 2017 /S/ Rodney Taylor

14B44 sheet c: Midwest Guardrail System (MGS) EAT Foundation Tube Details, Breakaway Post Detail, Block Detail, Marker Post Detail, Reflective Sheeting Detail

Version 3 Standard Detail Drawing 14b44 (sheet a-c) June 30, 2017

Midwest Guardrail System (MGS) Terminal

References:

Standard Spec 614 FDM 11-45-1 and FDM 11-45-2 AASHTO Roadside Design Guide

Bid items associated with this drawing:

ITEM NUMBER DESCRIPTION UNIT

614.0010 Barrier System Grading Shaping Finishing .................................................... EACH 614.0920 Salvaged Rail ....................................................................................................... LF 614.0925 Salvaged Guardrail End Treatments ............................................................. EACH 614.0930 – 0939 Salvaged (component) ................................................................................... EACH 614.1000 MGS Guardrail Temporary ................................................................................... LF 614.1100 MGS Guardrail Temporary Thrie Beam Transition .............................................. LF 614.1200 MGS Guardrail Temporary Terminal EAT ..................................................... EACH 614.2300 MGS Guardrail 3 .................................................................................................. LF 614.2310 MGS Guardrail 3 HS ............................................................................................ LF 614.2320 MGS Guardrail 3 QS ............................................................................................ LF 614.2330 MGS Guardrail 3 K ............................................................................................... LF 614.2340 MGS Guardrail 3 L ............................................................................................... LF 614.2500 MGS Thrie Beam Transition ................................................................................ LF 614.2610 MGS Guardrail Terminal EAT ........................................................................ EACH 614.2620 MGS Guardrail Terminal Type 2 .................................................................... EACH

Standardized Special Provisions associated with this drawing:

STSP NUMBER TITLE

NONE

Other SDDs associated with this drawing:

SDD 8d1 Concrete Curb, Concrete Curb & Gutter and Ties

SDD 14b28 Mow Strip Detail

SDD 14b42 Midwest Guardrail System

SDD 14b43 Midwest Guardrail System Long Span (MGS L)

SDD 14b44 Midwest Guardrail System Terminal (MGS)

SDD 14b45 Midwest Guardrail System Transitions (MGS)

SDD 14b47 Midwest Guardrail System Type 2 Terminal (MGS)

Design Notes:

Midwest guardrail system (MGS) terminal (MGS EAT) is an end treatment for the MGS system. MGS EAT can be used on either the approach or departure ends of an MGS installation. If a vehicle can have a head-on impact into the blunt end of MGS, install a MGS EAT. If a vehicle cannot have a head-on impact into a blunt end of MGS, a MGS Type 2 terminal may be used (SDD 14B47).

Individual construction detail drawings are required (See FDM 11-45-2.5.4).

End treatments, like the MGS EAT, provide structural strength for the entire MGS installation. In addition, MGS EAT is designed to accommodate head-on and angle impacts. If a vehicle impacts the MGS EAT between post 1 and post 3, the vehicle will go behind the MGS EAT. Post 3 of a MGS EAT is considered the end of barrier need point (see FDM 11-45-2.3.1.3 for more information on Length of Need).

Design grading near MGS EAT to accommodate head-on and angle impacts (see front side of SDD). Provide cross sections at beginning of approach taper and at posts 1, 5, and 9. If proper grading is not provided, the whole installation of MGS or the MGS EAT may not perform as intended.

Review drainage and grading near MGS EAT early in the scoping or design process. Additional right of way may be needed to accommodate grading, and drainage near MGS EAT.

In the area bounded by Roadside Clear Zone, hinge point between posts 1 through 5 of the EAT and Extended Vehicle Runout Path must conform to Clear Zone Requirements in FDM 11-15-1. If it is necessary a 3:1 slope is permissible, but a Clear Runout area beyond the 3:1 slope must be provided.

If it is not possible to get the preferred grading or alternative grading in Figure 8.2 of the 2006 AASHTO Roadside Design Guide, extend MGS beyond the length of need calculations to a location where the preferred or alternative grading can be provided. When moving or reducing MGS EAT’s grading provide documentation in DSR.

Eliminate grading in the following order of preference:

1. Reduce or eliminate MGS terminal head offset.

2. Reduce grading behind MGS post to hinge point to 2 feet

3. Reduce extended vehicle run out path slope to 3:1

Approach taper may be steepened to 4:1.

Avoid placing any objects, including breakaway hardware, near the approach to or on the non-traffic side of the MGS EAT. Hardware may “funnel” errant vehicle into the EAT or make it more difficult for safety hardware to operate. The Roadside Design Guide recommends an area 20 feet perpendicular to the MGS EAT and 75 feet parallel and behind the rail should be clear of fixed objects.

If terminal head offset is less than 1 foot, terminal head may extend into shoulder or over curb. In these situations, snow plows may be more prone to hit terminal head.

When placing an MGS EAT near curb and gutter, review curbed roadways section of FDM 11-45-1. Place note on individual detail drawings indicating where curb and gutter is being changed to accommodate MGS EAT.

MGS EAT cannot be shop bent, have reduced post spacing or nested rails. If MGS is a flared installation, do not steepen the flare rate of the MGS EAT.

MGS EAT may use grading and shaping items.

Give station and offset of MGS EAT post 1 in plan.

See SDD 14B42 for additional guidance.

Downturned ends are no longer considered an acceptable end treatment. Contact BPD to install a downturned end treatment (see FDM 11-45-2.5.4).

Contact Person:

Erik Emerson (608) 266-2842

Erik Emerson (608) 266-2842