1200 New Jersey Ave., SE 

 Washington, D.C. 20590 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

February 22, 2021 

In Reply Refer To: 

HSST-1/B-355 

Karla Lechtenberg 

Midwest Roadside Safety Facility 

130 Whittier Research Center 

2200 Vine Street 

Lincoln, NE 68583-0853 

USA 

Dear Ms. Lechtenberg: 

This letter is in response to your October 30, 2020 request for the Federal Highway 

Administration (FHWA) to review a roadside safety device, hardware, or system for eligibility 

for reimbursement under the Federal-aid highway program. This FHWA letter of eligibility is 

assigned FHWA control number B-355 and is valid until a subsequent letter is issued by FHWA 

that expressly references this device. 

Decision 

The following device is eligible within the length-of-need, with details provided in the form 

which is attached as an integral part of this letter: 

• Culvert-Mounted Strong-Post MGS 

Scope of this Letter 

To be found eligible for Federal-aid funding, new roadside safety devices should meet the crash 

test and evaluation criteria contained in the American Association of State Highway and 

Transportation Officials’(AASHTO) Manual for Assessing Safety Hardware (MASH). 

However, the FHWA, the Department of Transportation, and the United States Government do 

not regulate the manufacture of roadside safety devices. Eligibility for reimbursement under the 

Federal-aid highway program does not establish approval, certification or endorsement of the 

device for any particular purpose or use. 

This letter is not a determination by the FHWA, the Department of Transportation, or the United 

States Government that a vehicle crash involving the device will result in any particular 

outcome, nor is it a guarantee of the in-service performance of this device. Proper 

manufacturing, installation, and maintenance are required in order for this device to function as 

tested. 

This finding of eligibility is limited to the crashworthiness of the system and does not cover other 

structural features, nor conformity with the Manual on Uniform Traffic Control Devices. 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 

Eligibility for Reimbursement 

Based solely on a review of crash test results and certifications submitted by the manufacturer, 

and the crash test laboratory, FHWA agrees that the device described herein meets the crash test 

and evaluation criteria of the AASHTO’s MASH. Therefore, the device is eligible for 

reimbursement under the Federal-aid highway program if installed under the range of tested 

conditions. 

Name of system: Culvert-Mounted Strong-Post MGS 

Type of system: Longitudinal Barrier 

Test Level: TL3 

Testing conducted by: Midwest Roadside Safety Facility 

Date of request: October 30, 2020 

FHWA concurs with the recommendation of the accredited crash testing laboratory on the 

attached form. 

Full Description of the Eligible Device 

The device and supporting documentation, including reports of the crash tests or other testing 

done, videos of any crash testing, and/or drawings of the device, are described in the attached 

form. 

Notice 

This eligibility letter is issued for the subject device as tested. Modifications made to the device 

are not covered by this letter. Any modifications to this device should be submitted to the user 

(i.e., state DOT) as per their requirements. 

You are expected to supply potential users with sufficient information on design, installation and 

maintenance requirements to ensure proper performance. 

You are expected to certify to potential users that the hardware furnished has the same chemistry, 

mechanical properties, and geometry as that submitted for review, and that it will meet the test 

and evaluation criteria of AASHTO’s MASH.

Issuance of this letter does not convey property rights of any sort or any exclusive privilege. This 

letter is based on the premise that information and reports submitted by you are accurate and 

correct. We reserve the right to modify or revoke this letter if: (1) there are any inaccuracies in 

the information submitted in support of your request for this letter, (2) the qualification testing 

was flawed, (3) in-service performance or other information reveals safety problems, (4) the 

system is significantly different from the version that was crash tested, or (5) any other 

information indicates that the letter was issued in error or otherwise does not reflect full and 

complete information about the crashworthiness of the system. 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 

Standard Provisions 

• To prevent misunderstanding by others, this letter of eligibility designated as FHWA

control number B-355 shall not be reproduced except in full. This letter and the test

documentation upon which it is based are public information. All such letters and

documentation may be reviewed upon request.

• This letter shall not be construed as authorization or consent by the FHWA to use,

manufacture, or sell any patented system for which the applicant is not the patent holder.

• This FHWA eligibility letter is not an expression of any Agency view, position, or

determination of validity, scope, or ownership of any intellectual property rights to a

specific device or design. Further, this letter does not impute any distribution or licensing

rights to the requester. This FHWA eligibility letter determination is made based solely

on the crash-testing information submitted by the requester. The FHWA reserves the

right to review and revoke an earlier eligibility determination after receipt of subsequent

information related to crash testing.

Sincerely, 

Michael S. Griffith 

Director, Office of Safety Technologies 

Office of Safety 

Enclosures 
Version 10.0 (05/16) 

Page 1 of 6 

Request for Federal Aid Reimbursement Eligibility 

of Highway Safety Hardware 

Date of Request: October 30, 2020 New Resubmission 

Name: Karla Lechtenberg 

Company: Midwest Roadside Safety Facility 

Address: 130 Whittier Research Center, 2200 Vine Street, Lincoln, NE 68583-0853 

Country: USA 

To: Michael S. Griffith, Director 

FHWA, Office of Safety Technologies 

I request the following devices be considered eligible for reimbursement under the Federal-aid 

highway program. 

Device & Testing Criterion - Enter from right to left starting with Test L

System Type Submission Type Device Name / Variant Testing Criterion Test 

Level 

'B':Rigid/Semi-Rigid Barriers PhysicalCrashTesting 

Engineering Analysis 

Culvert-Mounted, 

Strong-Post MGS 

AASHTO MASH TL3 

! - ! - !

 

 

itter 

m

b

u

S

 

Same as Submitte 

evel 

! - ! - ! 

By submitting this request for review and evaluation by the Federal Highway Administration, I certify 

that the product(s) was (were) tested in conformity with the AASHTO Manual for Assessing Safety 

Hardware and that the evaluation results meet the appropriate evaluation criteria in the MASH. 

Individual or Organization responsible for the product: 

Contact Name: Karla Lechtenberg Same as Submitte

Company Name: Midwest Roadside Safety Facility Same as Submitte

Address: 130 Whittier Research Center, 2200 Vine Street, Lincoln, NE 68583-0853 

Country: USA Same as Submitte

Enter below all disclosures of financial interests as required by the FHWA `Federal-Aid Reimbursement 

Eligibility Process for Safety Hardware Devices' document. 

TheMidwestRoadsideSafetyFacility (MwRSF)and itsemployeesare requesting a letter of eligibility on behalf of 

the state departments of transportation participating in the Midwest States Pooled Fund Program. 

MwRSF’s financial interests are as follows: 

(i)No compensation, including wages,salaries,commissions,professional fees,or feesfor businessreferrals;

(ii)Consulting relationshipsconsist of answering design and implementation questions;

(iii)Researchfunding or other formsof researchsupport include continuing to fund researchprojects with

MwRSF;

(iv)No patents,copyrights, or other intellectual property interestsfor thissystem;

(v)No licensesor contractual relationshipsfor thissystem;and

(vi)No businessownershipand investment interestsfor thissystem.
Version 10.0 (05/16) 

Page 2 of 6 
 

 

Version 10.0 (05/16) 

Page 3 of 6 

PRODUCT DESCRIPTION 

NewHardware or 

Significant Modification 

Modification to 

Existing Hardware 

TheCulvert-Mounted, Strong-Post MGS consisted of amodified design of the MidwestGuardrailSystem 

(MGS)for installation onalow-fill culvert with a strong-post attachment to the culvert,half-post spacing,anda 

12-in. offset from the back of the post to the culvert headwall. A 43 ft − 4 in. long, four-cell, concrete 

culvert was constructedat the center of thesystem.Themaximum dimensionsof the culvert’stop slab were 

60in. wide and 8in. thick with a10-in. widex 9-in. high headwall positioned flush with the backsideof the top 

slab. 

TheMidwest GuardrailSystem (MGS)consistsof standard 12-gaugeW-beamsections(RWM04a) installed with 

the top of the railset at anominal height of 31inches.Therail ismounted onW6x9ASTMA992steel poststhat 

are401⁄2 in. long andareanchored to the top of theconcreteculvert using weldedsteel plates.A1⁄2-in. thickx 

81⁄2-in. wide x 12-in. long ASTMA572 steel plate was welded to the bottom of each post. In order to fully 

develop theconnection between the baseplateand theW6x9post sections,a special weld detail wasutilized 

that incorporateda3-pass,5/16-in. fillet weld on the front flange of the post anda1⁄4-in.fillet weld on the web 

and backflange of the post.There posts anchored to the top concreteslab using four 1-in.diameter by 101⁄2-in. 

long ASTMA307hex head boltswere placed through each top baseplateand the concrete deck and were held 

in place with 81⁄2-in. wide x 12-in.long x 1⁄4-in. thicksteel washer platesbelow the top slab.Note that the onepiece washer plate below the top slab used for testing could be replaced by individual 31⁄2-in. wide x 31⁄2-in. 

long x 1⁄4-in.squarewasher platesif desired. 

Thebacksideof the postswaspositioned 12in.awayfrom the culvert’sheadwall.The posts areset at 371⁄2-in. 

centers and were embedded 9 in. in the soil. A 6-in. x 12-in. x 141⁄2-in. wood blockout (PDB10a-b) is used to 

block the rail away from the front face of each steel post. The rails splices are located at mid-spans between

adjacent posts. Standard guardrail bolts or ASTMA307 5/8-in. diameter x 14-in. long guardrail bolts and nuts

(FBB06)are used to attach the rail to the posts. GalvanizedASTMA992steelW6x8.5sectionsmeasuring 72in. 

long andembedded 40in. were placed upstream and downstream of theculvert system.Five posts adjacent to 

the upstream endandsix posts adjacent to the downstream end wereset at half-post spacing.The remaining 

post on the upstream and downstream endsof thesystemareset at 75-in.centers. 

For the transition from half-post spacing MGSto culvert-mounted MGS,a separate transition system is not 

necessary, because the resistance of the culvert-mounted posts and the posts embedded 40 in. in soil 

were found verysimilar through component-level bogie tests.For the transition from standard MGSto the 

culvert- mounted MGS,at least five postsembedded 40in. insoil at half-post spacing are recommended to be 

installed both upstream and downstream from the culvert-mounted posts. For the transition from the 

standard MGSand half-post spacing MGS,noadditional stiffnesstransition isrequired,asthis transition has 

beensuccessfully tested during aprevious similar test, test no.MWTSP-2. 

For further information on implementation guidance for culvert slab thicknesses, embedment of the posts 

attached to the culvert, offsetsfor the posts attached to the culvert, headwall height, placement adjacent to fill 

slopes,guardrail end terminals,andMGStrailing-end anchorages,seechapter 8 of MwRSFreport no. 

TRP-03-383-20. 

CRASH TESTING 

Bysignature below, theEngineeraffiliated with the testing laboratory,agreesinsupport of thissubmission that 

all of the critical and relevant crash tests for this device listed above were conducted to meet the MASHtest 

criteria. The Engineer has determined that no other crash tests are necessary to determine the device meets 

theMASHcriteria. 

Engineer Name: Karla Lechtenberg Karla Lechtenbergc=US igitally signed by Karla Lechtenberg 

N:cn=KarlaLechtenberg,o=MwRSF,ou,email=kpolivka@unl.edu, 

ate:2020.11.0211:15:29-06'00' 

D

EngineerSignature: D

D

130 Whittier Research Center, 2200 Vine Street, Lincoln, NE 68583-0853 Address: Same asSubmitter 

Country: USA Same asSubmitter 

Help 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Version 10.0 (05/16) 

Page 4 of 6 

A brief description of each crash test and its result: 

Required Test 

Number 

Narrative 

Description 

Evaluation 

Results 

3-10 (1100C) 

The results of test no. CMGS-1conducted 

on December 1,2017arefound in MwRSF 

report no. TRP-03-383-20. A 2,428-lb small 

car with a simulated occupant seated in 

the right-front seat, impacted the culvertmounted MGS system at a speed of 61.3 

mph,anangle of 25.1degrees,andat 92 in. 

upstream from post no.19, thusresulting in 

an impact severity of 54.8 kip-ft. As the 

vehicle was redirected, a partial rail tear 

occurred through the lower hump of theWbeam rail at the downstream end of the rail 

splice at post no. 19. This tear did not 

rupture the rail nor compromise the 

integrity of theW-beam rail element.At 

0.259secafter impact, the vehicle became 

parallel to thesystem with a speed of 26.5 

mph.At 0.464sec, the vehicleexisted the 

barrier at a speed of 24.7 mph and at an 

angle of 17.0 degrees. The vehicle was 

successfully contained and smoothly 

redirected. 

Exterior vehicle damage was moderate and 

the interior occupant compartment 

deformations were minimal, with a 

maximum of 33⁄8 in., consequently not 

violating the limits established in MASH 

2016. Damage to the barrier was moderate 

consisting of deformed guardrail posts. 

contact marks on guardrail sections, 

deformed W-beam rail, and slight tearing of 

W-beam rail. The maximum lateral dynamic 

barrier deflections was 12 inches. The 

working width of the system was 33.1 

inches. All occupant risk measures were 

below recommended values. The test 

vehicle showed no tendency to rollover and 

did not penetrate or ride over the barrier. 

Thevehicle trajectory did not violate the 

boundsof theexit box. 

PASS 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Version 10.0 (05/16) 

Page 5 of 6 

Required Test 

Number 

Narrative 

Description 

Evaluation 

Results 

3-11 (2270P)

The results of test no. CMGS-2conducted 

on February 14, 2018 are found in MwRSF 

report no.TRP-03-383-20.A 5,013-lb pickup 

truck impacted the culvert-mounted MGS 

system at a speed of 62.8mph,anangle of 

25.7 degrees, and at a location of 129.1 in. 

upstream from post no.19, thusresulting in 

an impact severity of 124.7 kip-ft. At 0.270 

secafter impact, the vehicle becameparallel 

to thesystem with a speed of 36.9mph.At 

0.520sec, thevehicleexisted the barrierat a 

speed of 33.1 mph and at an angle of 17.4 

degrees. The vehicle was successfully 

contained andsmoothly redirected. 

Exterior vehicle damage was moderate and 

the interior occupant compartment 

deformations were minimal, with a 

maximum of 11⁄8 in., consequently not 

violating the limits established in MASH 

2016. Damage to the barrier was moderate 

consisting of deformed guardrail posts. 

contact marks on guardrail sections, and 

deformed W-beam rail. The maximum 

lateral dynamic barrier deflections was 29.6 

inches. The working width of the system 

was 50.8 inches. All occupant risk measures 

were below recommended values. The test 

vehicle showed no tendency to rollover and 

did not penetrate or ride over the barrier. 

Thevehicle trajectory did not violate the 

boundsof theexit box. 

PASS 

3-20 (1100C) Test no. 3-20 is not applicable for this type 

of system. Non-Relevant Test, not conducted 

3-21 (2270P) Test no. 3-21 is not applicable for this type 

of system. Non-Relevant Test, not conducted 

Full Scale Crash Testing was done in compliance with MASH by the following accredited crash test 

laboratory (cite the laboratory’s accreditation status as noted in the crash test reports.):

Laboratory Name: Midwest Roadside Safety Facility 

LaboratorySignature: DN: cn=KarlaLechtenberg, o=MwRSF, ou, email=kpolivka@unl.edu, c=US Digitally signed by Karla Lechtenberg 

Date: 2020.11.02 11:15:51 -06'00' 

KarlaLechtenberg 

Address: 130 Whittier Research Center, 2200 Vine Street, 

Lincoln, NE 68583-0853 Same asSubmitter 

Country: USA Same asSubmitter 

Accreditation Certificate 

Number and Dates of current 

Accreditation period : 

A2LA Certificate Number: 2937.01, Valid to November 30, 2021 is current 

certificate. A2LACertificateNumber:2937.01,Valid to November 30,2017 was 

held during the testing phaseof thisproject. 
 

 

 

 

 

 

Version 10.0 (05/16) 

Page 6 of 6 

Karla Digitally signed by Karla Lechtenberg 

DN: cn=Karla Lechtenberg, o=MwRSF, 

ou, email=kpolivka@unl.edu, c=US 

Submitter Signature*: 

Lechtenberg Date: 2020.11.02 11:42:32 -06'00' 

ATTACHMENTS 

Attach to this form: 

1) Additional disclosures of related financial interest as indicated above. 

2) A copy of the full test report, video, and a Test Data Summary Sheet for each test conducted in 

support of this request. 

3) A drawing or drawings of the device(s) that conform to the Task Force-13 Drawing Specifications 

[Hardware Guide Drawing Standards]. For proprietary products, a single isometric line drawing is 

usually acceptable to illustrate the product, with detailed specifications, intended use, and contact 

information provided on the reverse. Additional drawings (not in TF-13 format) showing details that 

are relevant to understanding the dimensions and performance of the device should also be submitted 

to facilitate our review. 

FHWA Official Business Only: 

Eligibility Letter 

Number Date Key Words 
 

CMGS-1 

[14

[15

November 2, 2020 

 TRP-03-383-20-R1

CMGS-1 
 

CMGS-2 

[14

[15

November 2, 2020 

 TRP-03-383-20-R1

CMGS-2 
150" [3810] OR 300" [7620] 37 1/2" 953 LONG SECTION (TYP) A 

RWM04a 

A 

PDB10a 16D NAIL, 

GALVANIZED 8-FBB01 

FBB06 

25 7/8" 657 

10" 254 min. 

Soil REINFORCED CONCRETE 

BOX CULVERT 

9" 229 

(min) 

CONDUITS MAY BE PLACED 4-FBX24a x 9 1/2" [241] LONG IN DECK OR HOLES MAY BOLTS & NUTS OR 4-FRS24a BE FIELD DRILLED, NOT TO ANCHOR STUDS & NUTS INTERFERE WITH REINFORCEMENT 

SECTION A-A 

Note: Either through bolt or epoxy anchor with minimum 8" [203] embedment and minimum 1,300 psi [9.0 MPa] bond strength. 

REDUCED SPACING, W-BEAM GUARDRAIL ON CONCRETE BOX CULVERT

SGR25

SHEET NO. DATE:

1 of 4 10/28/2020
DESIGNATOR COMPONENT SYSTEM NUMBER 

FBB01 

FBB06 

Guardrail Splice Bolts and Nuts 

Guardrail Post Bolts and Nuts 

a-b

a-b

8

4 

PDB10 Timber Blockout a-b 4 

RWM04a W-beam Rail a-b 1 

----- 

----- 

Wide-flange Guardrail Post 

16D Nail, Galvanized

a-b

a-b

4

4

----- Base Plate a-b 4

----- Washer Plate a 4

FBX24a Hex Bolt and Nut a 16 

FRS24a Straight Anchor Stud and Nuts b 16 

INTENDED USE

Reduced Spacing, W-Beam Guardrail on Concrete Box Culvert (SGR25) should be used in locations where a 

maximum dynamic deflection of 12” [305] or less is acceptable and where a working width of 33 1/8” [842] is 

rovided. W-Beam Guardrail on Concrete Box Culvert should be anchored and terminated using a suitable

uardrail end treatment. W-Beam Guardrail on Concrete Box Culvert can be used with wide-flange steel posts 

s shown. Guardrail sections measuring 300” [7620] long can be used in lieu of the 150” [3810] long sections. 

his system is TL-3 NCHRP 350 and MASH accepted.

p

g

a

T

COMPONENTS 

Unit Length = 150" [3810] 

ACCEPTANCE 

FHWA acceptance was not pursued.

REFERENCES

Polivka, K.A., Faller, R.K., Sicking, D.L., Rohde, J.R., Reid, J.D., and Holloway, J.C., NCHRP 350 Development and

Testing of a Guardrail Connection to Low-Fill Culverts, Final Report to the Midwest State’s Regional Pooled Fund 

Program, Transportation Research Report No. TRP-03-114-02, Project No. SPR-3(017)-Year 10, Midwest Roadside 

Safety Facility, University of Nebraska-Lincoln, November 1, 2002.

Polivka, K.A., Faller, R.K., Reid, J.D., Rohde, J.R., and Sicking, D.L., Guardrail Connection for Low-Fill Culverts,Paper

No. 03-4421, Transportation Research Record No. 1851, Transportation Research Board, National Research Council

Washington, Washington, D.C., January 2003. pp. 105-116.

Price, C.W., Rosenbaugh, S.K., Faller, R.K., Sicking, D.L., Reid, J.D., and Bielenberg, R.W., Post Weld and Epoxy

Anchorage Variations for W-Beam Guardrail Attached to Low-Fill Culverts, Final Report to the Midwest States’ 

Regional Pooled Fund Program, Transportation Research Report No. TRP-03-278-13, Midwest Roadside Safety Facility,

University of Nebraska-Lincoln, August 12, 2013.

Asadollahi Pajouh, M., Bielenberg, R.W., Rasmussen, J.D., Bai, F., Faller, R.K., and Holloway, J.C., Dynamic Testing 

and Evaluation of Culvert-Mounted, Strong-Post MGS to TL-3 Guidelines of MASH 2016, Final Report to the 

Wisconsin Department of Transportation, Transportation Research Report No. TRP-03-383-20, Midwest Roadside 

Safety Facility, University of Nebraska-Lincoln, October 26, 2020. 

CONTACT INFORMATION

Midwest Roadside Safety Facility

Nebraska Transportation Center

University of Nebraska-Lincoln 

2200 Vine Street

130 Whittier Research Center 

Lincoln, NE 68583-0965 

REDUCED SPACING, W-BEAM GUARDRAIL ON CONCRETE BOX CULVERT

SGR25

SHEET NO. DATE:

2 of 4 10/28/2020
1/2" 13 1/4" 6 

8 1/2" 216 8 1/2" 216 8 1/2" 216 

1 3/4" 44 1" 25 2 1/4" 58 (TYP) 

3" 76 2" 51 

12" 305 12" 305 11" 279 

2" 51 2" 51 

1 1/8" 29 

PLAN VIEW 1 3/4" 44 (TYP) 1 1/8" 29 (TYP) (TYP) Base Plate Washer Plate 

ONLY OPTION A 

1" 25 

1" 25 

7 1/8" 181 1/4" 6 

3/4" 19 to 

13/16" [20] 

3/4" 19 

W6x9 [W152x13.4]

or W6x8.5 [W152x12.6] 40 1/2" 1029 

(varies with 

height of fill) 

3 Pass 1/4"[6] 5/16"[8] 

Base Plate 

ELEVATION VIEW PROFILE VIEW 

REDUCED SPACING, W-BEAM GUARDRAIL ON CONCRETE BOX CULVERT

SGR25

SHEET NO. DATE:

3 of 4 10/28/2020
DESIGNATOR AREA

2 in. [103

mm2] 

in.4

IX

[106 4 mm ]

IY

4 in. [106

4 mm ]

SX

in.3 [103

3 mm ]

SY

in.3 [103

3 mm ]

Wide-flange

guardrail post 2.68 [1.7] 16.4 [6.83] 2.20 [0.92] 5.56 [91.1] 1.11 [18.2]

SPECIFICATIONS

The culvert-mounted guardrail post shall be manufactured using AASHTO M270M (ASTM 

A709M) Grade 250 steel or ASTM A992 unless corrosion resistant steel is required in which case 

the post shall be manufactured from AASHTO M270M (ASTM A709M) Grade 50W steel. The

dimensions of the cross-section shall conform to a W6x9 [W152x13.4] section as defined in 

AASHTO M160M (ASTM A6M). W6x8.5 [W150x12.6] wide-flange posts are an acceptable 

alternative that is considered equivalent to the W6x9 [W152x13.4]. 

After the section is cut and all holes are drilled or punched, the component should be zinc-coated 

according to AASHTO M111 (ASTM A123) unless corrosion resistant steel is used. When 

corrosion resistant steel is used the portion of the post to be embedded in soil shall be zinc-coated

according to AASHTO M111 (ASTM A123) and the portion above the soil shall not be zinc-coated, 

painted, or otherwise treated. 

Dimensions tolerances not shown or implied are intended to be those consistent with the proper

functioning of the part, including its appearance and accepted manufacturing practices.

REDUCED SPACING, W-BEAM GUARDRAIL ON CONCRETE BOX CULVERT

SGR25

SHEET NO. DATE:

4 of 4 10/28/2020
55563

520"

2187 1/2"

13208

84"2134

41 40 39 38 37 36 35 34 33 32 30 28 12 10 8 7 6 5 4 3 2 1 2624 22 20 18 16 14

371/2"953 211/4"539 25° 75"1905 (TYP) for (TYP) for Post Nos. 8-32

Post Nos. 1-8 Impact & 32-41 1100C

PLANVIEW

a2 a1 a1 a1 a1 a1 a1 a1 a1 a1 a1 a1 a1 a3 a2

A C B

GroundLine

C B A

Concrete Culvert ELEVATIONVIEW (See WI_Culvert_DetailsDrawing for details)

SHEET: 

MGS Strong Post on 1 of 18

Note: (1) Test shall be performed according to test designation no. Culvert DATE:

3-10ofMASHcriteria. 11/22/2017 Test No. CMGS-1 (2) The impact location is 84" [2,134] upstream of the splice at

DRAWN BY: postno.19. System Layout MES/JEK/ (3) BCT anchors are placed in 3' [914] holes, then backfilled DTM Midwest Roadside

DWG. NAME. SCALE: 1:230 REV. BY: and tamped with soil. Safety Facility WI_MGS_on_Culvert_R12 UNITS: in.[mm]JEK/RWB/ KAL/JCH (4) Critical region is between post nos. 13 and 29.
2187 1/2"55563

520"13208

132"3353

41 40 39 38 37 36 35 34 33 32 30 28 12 10 8 7 6 5 4 3 2 1 2624 22 20 18 16 14

25° 371/2"953 211/4"539 75"1905 (TYP)for (TYP) for PostNos.8-32

Post Nos. 1-8 Impact & 32-41 2270P

PLANVIEW

a2 a1 a1 a1 a1 a1 a1 a1 a1 a1 a1 a1 a1 a3 a2

A C B

GroundLine

C B A

Concrete Culvert ELEVATIONVIEW (See WI_Culvert_DetailsDrawing for details)

SHEET: 

MGS Strong Post on 1 of 18

Note: (1) Test shall be performed according to test designation no. Culvert DATE:

3-11ofMASHcriteria. 11/22/2017 TestNo.CMGS-2 (2) The impact location is 132" [3,353] upstream of the splice at

DRAWN BY: postno.19. System Layout MES/JEK/ (3) BCT anchors are placed in 3' [914] holes, then backfilled DTM Midwest Roadside

SCALE: 1:230 REV. BY: and tamped with soil. DWG. NAME. Safety Facility WI_MGS_on_Culvert-2_R2 UNITS:in.[mm]RWB (4) Critical region is between post nos. 13 and 29.
b4 c7

b5

31"788

CompactedSoil 12"305 ConcreteCulvert c5 a1 (SeeWI_Culvert_Details

Drawingfordetails) Ground

Line 9"229

D

48"1219

SubgradeGroundLine

18"457

NativeSoil

SECTIONA-A

PostNos.13-15,17-22

b6 &24-26

Note:(1)A1"[25]dia.,12"[305]longthreadedrodwas

substitutedforboltc3atpostnos.14,15,17,18,21, d3 22,24,and25toallowforproperinstallationinareas

c3 withdecksag.

SHEET:

MGSStrongPoston 2of18

b7 Culvert DATE:

11/22/2017 TestNo.CMGS-1DRAWNBY:

PostNos.13-15,17-22& MES/JEK/ DETAILD DTM 24-26Detail MidwestRoadside

DWG.NAME. SCALE:1:30 REV.BY: SCALE1:8 SafetyFacility WI_MGS_on_Culvert_R12 UNITS:in.[mm]JEK/RWB/ KAL/JCH
c7

b5

c5

CompactedSoil 12"305 31"788

ConcreteCulvert a1(SeeWI_Culvert_Details b4Drawingfordetails) Ground

Line 9"229

E

48"1219

SubgradeGroundLine NativeSoil

18"457

c10

SECTIONB-B

PostNos.16&23

d3 Note:(1)Postsnos.16and23areepoxiedintheconcreteculvertatadepth 8"203 of8"[203]withPowersFastenersAC100+Goldepoxyoranequivalent

epoxywithaminimumbondstrengthof1,305psi[9.0MPa].

(2)Theholesforthe1"[25]threadedrods(partc9)thatinterfaceonly

withthe8"[203]concretedeckneedtobetapedonthebottomsideofthedecktoretaintheexpoxyinthehole. c9

SHEET:

MGSStrongPoston 3of18Culvert DATE: DETAILE 11/22/2017 TestNo.CMGS-1 SCALE1:8

DRAWNBY:

PostNos.16&23Detail MES/JEK/ DTM MidwestRoadside

DWG.NAME. SCALE:1:30 REV.BY: SafetyFacility WI_MGS_on_Culvert_R12 UNITS:in.[mm]JEK/RWB/ KAL/JCH
813

b3 c7

b4 b4

a1

c5

32" 31"787 F

c5

GroundLine

b3

40"1016

Post No. 4 PostNo.3

SECTIONC-C

SPLICEDETAIL c6

FRONT SIDE

Note: (1) Guardrail bolts (part c5) on the upstream side of the web.

SHEET: 

MGS Strong Post on 4 of 18Culvert DATE:

11/22/2017 Test No. CMGS-1 DETAIL FDRAWN BY: SCALE 1 : 8 Splice and Post Detail MES/JEK/ DTM

DWG. NAME.

Midwest Roadside

SCALE: 1:20 REV. BY: Safety Facility WI_MGS_on_Culvert_R12 UNITS: in.[mm]JEK/RWB/ KAL/JCH
6"152 12"305

315/16"100 13/4"44

3/4"19

71/8"

57/8"150 3/16"4

181

PLANVIEW 141/4"362

1"25

1"25

71/8"181 1/4"6

ELEVATIONVIEW PROFILEVIEW

Partb4

SCALE1:8

3/4"

3/4"19

19 6"152

8"203 4"102 13/4"44

71/8"181 3/4"19

141/4"362 72"1829

PROFILEVIEW

SCALE1:8

AlternateBlockoutOption-

6"x4"x141/4"[152x102x362]Blockout

with6"x8"x141/4"[152x203x362]Blockout

ELEVATIONVIEW

SHEET:

MGSStrongPoston 8of18Culvert DATE:

11/22/2017 TestNo.CMGS-1 ELEVATIONVIEW PROFILEVIEWDRAWNBY:

PostNos.1-12&27-41 Partb3 MES/JEK/ DTM Components MidwestRoadside

DWG.NAME. SCALE:1:15 REV.BY: SafetyFacility WI_MGS_on_Culvert_R12 UNITS:in.[mm]JEK/RWB/ KAL/JCH
C Weld,"X" Weld,"Y"

SeeNotes in.[mm] L in.[mm] "X"

1/4"[6]- SinglePass5/16"[8]- TriplePass

SeeNotes "X"

SeeNotes "Y"

PLANVIEW

b5

401/2"1029 41"1041

b6

29/32"58

1/2"13

PROFILEVIEW

ELEVATIONVIEW

SHEET:

MGSStrongPoston 9of18Culvert DATE:

11/22/2017 TestNo.CMGS-1DRAWNBY:

Notes:(1)WeldingistobecompletedusingtheGas-MetalArcWelding(GMAW) PostNos.13-26Assembly MES/JEK/ DTM

DWG.NAME.

Details MidwestRoadside processwithER7OS-3weldingwireandargonoxygenorCO2covergas. SCALE:1:12 REV.BY: SafetyFacility (2)Requirescertifiedwelder. WI_MGS_on_Culvert_R12 UNITS:in.[mm]JEK/RWB/ KAL/JCH
11/8"29

(TYP) 13/4"44 2"51

315/16"100

81/2"216

3/16"4 57/8"150

3"76 13/4"44

PLANVIEW

PLANVIEW

1/2"13

12"305

1"25

1" ELEVATIONVIEW

Partb6

25

71/8"181 2"51 13/4"44

1/4"6

11/8"29

81/2" (TYP) 3/4" 216 19 3/4"19

2"51 13/4"44

401/2"1029 PLANVIEW

1/4"6

11"279

ELEVATIONVIEW

Partb7

MGSStrongPostonCulvert

ELEVATIONVIEW PROFILEVIEW TestNo.CMGS-1

Partb5

PosNos.13-26Component Details MidwestRoadside

DWG.NAME. SCALE:1:12 SafetyFacility WI_MGS_on_Culvert_R12 UNITS:in.[mm]

SHEET:10of18

DATE:11/22/2017DRAWNBY:MES/JEK/ DTMREV.BY:JEK/RWB/ KAL/JCH