ADD 3 ARFQ 27 27.pdf

Date Printed: Oct 15, 2026 Page:1 FORM ID: WV-PRC-ARFQ-002 2020/05

State of West Virginia Agency Request for Quote

Highways

Proc Folder: 2060575 Reason for Modification:

Doc Description: ADDENDUM 3 - Guardrail and Guardrail Components Addendum 3

Proc Type: Agency Purchase Order

Date Issued Solicitation Closes Solicitation No Version

2026-10-15 2026-10-21 10:30 ARFQ 0803 DOT2700000027 4

BID RECEIVING LOCATION

PROCUREMENT DIVISION

DIVISION OF HIGHWAYS

BLDG 6 RM 340A

1900 KANAWHA BLVD E

CHARLESTON WV 25305

US

VENDOR

Vendor Customer Code:

Vendor Name :

Address :

Street :

City :

State : Country : Zip :

Principal Contact :

Vendor Contact Phone: Extension:

FOR INFORMATION CONTACT THE BUYER

Rebecca D Plants

(304) 675-0853 rebecca.d.plants@wv.gov

Vendor Signature X FEIN# DATE All offers subject to all terms and conditions contained in this solicitation

Date Printed: Oct 15, 2026 Page:2 FORM ID: WV-PRC-ARFQ-002 2020/05

ADDITIONAL INFORMATION

Addendum 3 is issued for the following reason:

1. Attachment of vendor questions and responses

No other changes.

INVOICE TO SHIP TO

DIVISION OF HIGHWAYS DIVISION OF HIGHWAYS

DISTRICT TEN DISTRICT TEN

270 HARDWOOD LN 270 HARDWOOD LN

PRINCETON WV PRINCETON WV

US US

Line Comm Ln Desc Qty Unit Issue Unit Price Total Price 1 Guardrail Panels 13.6" Straight 540.00000 LF

Comm Code Manufacturer Specification Model # 30121717

Extended Description:

HW105801

30121717

INVOICE TO SHIP TO

DIVISION OF HIGHWAYS DIVISION OF HIGHWAYS

DISTRICT TEN DISTRICT TEN

270 HARDWOOD LN 270 HARDWOOD LN

PRINCETON WV PRINCETON WV

US US

Line Comm Ln Desc Qty Unit Issue Unit Price Total Price 2 Guardrail Buffer Sections 50.00000 EA

Comm Code Manufacturer Specification Model # 30121717

Extended Description:

HW105801

30121717

Date Printed: Oct 15, 2026 Page:3 FORM ID: WV-PRC-ARFQ-002 2020/05

INVOICE TO SHIP TO

DIVISION OF HIGHWAYS DIVISION OF HIGHWAYS

DISTRICT TEN DISTRICT TEN

270 HARDWOOD LN 270 HARDWOOD LN

PRINCETON WV PRINCETON WV

US US

Line Comm Ln Desc Qty Unit Issue Unit Price Total Price 3 Steel Guardrail Posts 50.00000 EA

Comm Code Manufacturer Specification Model # 30121717

Extended Description:

HW105801

30102900

INVOICE TO SHIP TO

DIVISION OF HIGHWAYS DIVISION OF HIGHWAYS

DISTRICT TEN DISTRICT TEN

270 HARDWOOD LN 270 HARDWOOD LN

PRINCETON WV PRINCETON WV

US US

Line Comm Ln Desc Qty Unit Issue Unit Price Total Price 4 Bolts 1 1/4" 500.00000 EA

Comm Code Manufacturer Specification Model # 30121717

Extended Description:

Bolts 1 1/4"

Date Printed: Oct 15, 2026 Page:4 FORM ID: WV-PRC-ARFQ-002 2020/05

INVOICE TO SHIP TO

DIVISION OF HIGHWAYS DIVISION OF HIGHWAYS

DISTRICT TEN DISTRICT TEN

270 HARDWOOD LN 270 HARDWOOD LN

PRINCETON WV PRINCETON WV

US US

Line Comm Ln Desc Qty Unit Issue Unit Price Total Price 5 Bolts 9 3/8" 500.00000 EA

Comm Code Manufacturer Specification Model # 30121717

Extended Description:

Bolts 9 3/8"

INVOICE TO SHIP TO

DIVISION OF HIGHWAYS DIVISION OF HIGHWAYS

DISTRICT TEN DISTRICT TEN

270 HARDWOOD LN 270 HARDWOOD LN

PRINCETON WV PRINCETON WV

US US

Line Comm Ln Desc Qty Unit Issue Unit Price Total Price 6 Guardrail Nuts 1000.00000 EA

Comm Code Manufacturer Specification Model # 30121717

Extended Description:

Guardrail Nuts

SCHEDULE OF EVENTS

Line Event Event Date

1 TECH QUES DEADLINE AT 10AM ET 2026-10-01

Document Phase Document Description Page

DOT2700000027 Draft ADDENDUM 3 - Guardrail and Guardrail Components

Revised 6/8/2012

SOLICITATION NUMBER: [Insert RFQ, RFP No.] Addendum Number: [Insert Number]

The purpose of this addendum is to modify the solicitation identified as [insert RFQ, RFP No.] (“Solicitation”) to reflect the change(s) identified and described below.

Applicable Addendum Category:

[ ] Modify bid opening date and time

[ ] Modify specifications of product or service being sought

[ ] Attachment of vendor questions and responses

[ ] Attachment of pre-bid sign-in sheet

[ ] Correction of error

[ ] Other

Description of Modification to Solicitation:

Additional Documentation: Documentation related to this Addendum (if any) has been included herewith as Attachment A and is specifically incorporated herein by reference.

Terms and Conditions:

1. All provisions of the Solicitation and other addenda not modified herein shall remain in full force and effect.

2. Vendor should acknowledge receipt of all addenda issued for this Solicitation by completing an Addendum Acknowledgment, a copy of which is included herewith.

Failure to acknowledge addenda may result in bid disqualification. The addendum acknowledgement should be submitted with the bid to expedite document processing.

Revised 6/8/2012

ATTACHMENT A

ARFQ DOT2700000027 Guardrail and Guardrail Components

Responses to Questions from Vendors

Question 1 Is the panel length 13′-6″?

Response 1

D10 needs 12.5” as reflected in AASHTO Designation: M180-25 attached.

Question 2 Can you please provide the guardrail drawing/profile or a reference photo.

Response 2

Please refer to the WVDOH Engineering Division Typical Sections and

Related Details, 2019 edition. AASHTO Designation: M180-25 attached.

https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PD F/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS% 20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf

Question 3

What is the required beam thickness and steel grade?

Response 3

Please refer to the WVDOH Engineering Division Typical Sections and Related Details, 2019 edition and Section 607 in the 2023 WVDOH Standard Specifications. AASHTO Designation:

M180-25 attached.

https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PD F/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS% 20AND%20RELATED%20DETAILS.pdf

Question 4 What is the required post profile, dimensions, thickness, and length?

Response 4

Please refer to the WVDOH Engineering Division Typical Sections and Related Details, 2019 edition. AASHTO Designation: M180-25 attached.

https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PD https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf

Question 5 What is the required post spacing?

Response 5

These items are for the district’s stockpile for future use by state crews on state bridges. Please refer to the WVDOH Engineering Division Typical Sections and Related Details, 2019 edition https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PD

Question 6 Are the buffer sections/end terminals a specific design?

Response 6

Standard WVDOH. Please refer to the WVDOH Engineering Division Typical Sections and Related Details, 2019 edition. AASHTO Designation: M180-25 attached.

https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PD https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf

Question 7 Please confirm the bolt diameter, grade, and head type for both bolt lengths.

Response 7

Please refer to the WVDOH Engineering Division Typical Sections and Related Details, 2019 edition. AASHTO Designation: M180-25 attached.

https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PD F/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS% 20AND%20RELATED%20DETAILS.pdf

Question 8 What is the required finish (e.g., hot-dip galvanized), including any applicable galvanizing coating standards or thickness.

Response 8

Galvanized or zinc aluminum (refer to section 607 in the 2023 WVDOH Standard Specifications) AASHTO Designation: M180-25 attached.

Question 9 Which standard should the system comply with (e.g., MASH, AASHTO, EN 1317, or another standard)?

Response 9

AASHTO Designation: M180-25 attached

Question 10 Could you please confirm if the guardrail panels and posts are Q235 or Q355?

Response 10

Please see AASHTO Designation: M180-25 attached.

https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf https://webapps.transportation.wv.gov/TWS/WVDOTDocumentStorageMigration/PDF/Transportation/highways/engineering/Typicals/2019%20TYPICAL%20SECTIONS%20AND%20RELATED%20DETAILS.pdf

Question 11 Could you also clarify whether the core layer weight is 550 g/m² or 1100 g/m²?

Response 11

Type II mandates a minimum coating weight of 1100 grams/square meter. AASHTO Designation: M180-25 attached.

Question 12 In reference to Line 3 – Is there more information on the post? In the past, we’ve provided a W6x8.5# post at 6’L?

Response 12 W 6 x 8.5#x 6’ L is correct

AASHTO Designation: M180-25 attached.

Question 13 In reference to Line 5 – What is the bolt being used for? In the past, we’ve provided a 5/8” x 10” post bolt used for blocks. Can you verify diameter/use?

Response 13 5/8” x 10” is correct. AASHTO Designation: M180-25 attached.

Standard Specification for

Steel Components for Highway Guardrail

AASHTO Designation: M 180-25 Technically Revised: 2025

Technical Subcommittee: 4d, Safety Devices

American Association of State Highway and Transportation Officials 555 12th Street NW, Suite 1000 Washington, DC 20004

Accessed by account: West Virginia Department of Transportation | User: Chris Hatcher | Date: Thu Oct 08 16:02:00 UTC 2026 | IP address: 129.71.250.22

Paige Prudhon Line

TS-4d M 180-1 AASHTO

Standard Specification for

Steel Components for Highway Guardrail

AASHTO Designation: M 180-25 Technically Revised: 2025

Technical Subcommittee: 4d, Safety Devices

1. SCOPE

1.1. This specification covers steel components used in non-proprietary highway guardrail, including corrugated sheet steel prepared for use as guardrail beams, transition beams, end sections, buffer sections, terminal connectors, and backup plates; fasteners, including standard and high-strength bolt, nuts, and washers; steel guardrail posts; and anchorage wire rope and swage fittings.

1.2. This specification covers coating, storage, and handling requirements for zinc-coated, zinc-alloy coated, uncoated, and atmospheric corrosion-resistant components used in highway guardrail.

1.3. Although some of the components covered under this specification are used in proprietary guardrail systems, these specifications do not purport to address all components of proprietary guardrail systems.

1.4. The values stated in U.S. customary units are to be regarded as the standard. The values given in parentheses are mathematical conversions to metric units that are provided for information only and are not considered the standard unless otherwise noted.

2. REFERENCED DOCUMENTS

2.1. AASHTO Standards:

M 30, Metallic-Coated Steel Wire Rope and Fittings for Highway Guardrail M 232M/M 232, Zinc Coating (Hot-Dip) on Iron and Steel Hardware M 270M/M 270, Structural Steel for Bridges T 65M/T 65, Mass [Weight] of Coating on Iron and Steel Articles with Zinc or

Zinc-Alloy Coatings

2.2. ASTM Standards:

A36/A36M, Standard Specification for Carbon Structural Steel A123/A123M, Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and

Steel Products A307, Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 psi

Tensile Strength A385/A385M, Standard Practice for Providing High-Quality Zinc Coatings (Hot Dip) A563/A563M, Standard Specification for Carbon and Alloy Steel Nuts (Inch and Metric) A568/A568M, Standard Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements for

© 2025 by the American Association of State Highway and Transportation Officials.

All rights reserved. Duplication is a violation of applicable law.Accessed by account: West Virginia Department of Transportation | User: Chris Hatcher | Date: Thu Oct 08 16:02:00 UTC 2026 | IP address: 129.71.250.22

Paige Prudhon Line

TS-4d M 180-2 AASHTO

A572/A572M, Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel

A576, Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality A588/A588M, Standard Specification for High-Strength Low-Alloy Structural Steel, up to

50 ksi [345 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance A606/A606M, Standard Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with Improved Atmospheric Corrosion Resistance A653/A653M, Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron

Alloy-Coated (Galvannealed) by the Hot-Dip Process A780/A780M, Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip

Galvanized Coatings A924/A924M, Standard Specification for General Requirements for Steel Sheet, Metallic

Coated by the Hot-Dip Process A992/A992M, Standard Specification for Structural Steel Shapes A1046/A1046M, Standard Specification for Steel Sheet, Zinc-Aluminum-Magnesium Alloy-

Coated by the Hot-Dip Process B6, Standard Specification for Zinc B695, Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel E376, Standard Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current

(Electromagnetic) Testing Methods F436/F436M, Standard Specification for Hardened Steel Washers Inch and Metric

Dimensions F568M, Standard Specification for Carbon and Alloy Steel Externally Threaded Metric

Fasteners (withdrawn 2012; no replacement) F2329/F2329M, Standard Specification for Zinc Coating, Hot-Dip, Requirements for

Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners

F3125/F3125M, Standard Specification for High Strength Structural Bolts and Assemblies, Steel and Alloy Steel, Heat Treated, Inch Dimensions 120 ksi and 150 ksi Minimum Tensile Strength, and Metric Dimensions 830 MPa and 1040 MPa Minimum Tensile Strength

2.3. ANSI/ASME Standards:

B1.1, Unified Inch Screw Threads (UN, UNR, and UNJ Thread Forms) B1.13M, Metric Screw Threads: M Profile B18.21.1, Washers: Helical Spring-Lock, Tooth Lock, and Plain Washers (Inch Series) B18.22M, Metric Plain Washers

3. CLASSIFICATION

3.1. Six types and two classes of guardrail beams, transition beams, end sections, buffer sections, terminal connectors, and backup plates are provided as follows:

3.1.1. Types:

Type I—Zinc-coated, 1.80 oz/ft2 (550 g/m2) total both sides coating weight (mass) minimum single-spot.

Type II—Zinc-coated, 3.60 oz/ft2 (1100 g/m2) total both sides coating weight (mass) minimum single-spot.

Type III—Paint-coated.

Type IV—Atmospheric corrosion-resistant steel (weathering steel).

© 2025 by the American Association of State Highway and Transportation Officials.

All rights reserved. Duplication is a violation of applicable law.Accessed by account: West Virginia Department of Transportation | User: Chris Hatcher | Date: Thu Oct 08 16:02:00 UTC 2026 | IP address: 129.71.250.22

TS-4d M 180-3 AASHTO

Type V—Zinc-aluminum-magnesium alloy coated, 0.80 oz/ft2 (245 g/m2) total both sides coating weight (mass) minimum single-spot.

Type VI—Zinc-aluminum-magnesium alloy coated, 1.00 oz/ft2 (305 g/m2) total both sides coating weight (mass) minimum single-spot.

3.1.2. Classes:

Class A—Base metal nominal thickness of—0.105 in. (2.67 mm), 12 gauge.

Class B—Base metal nominal thickness of—0.135 in. (3.43 mm), 10 gauge.

3.2. Tolerances:

3.2.1. Tolerances for Types I, II, V, and VI coatings shall conform to the values in Table 1.

Table 1—Coating Weight and Thickness Requirements

Coating Weight (Total Both Sides)a Minimum Single-Spot Single Side Coating Thicknessb Minimum Single-Spot Minimum Triple-Spot

Type oz/ft2 g/m2 oz/ft2 g/m2 mils µm I 1.80 550 2.00 610 1.5c 38.5c II 3.60 1100 4.00 1220 3.0c 77.0c V 0.80 245 0.90 275 0.8d 20.4d VI 1.00 305 1.15 350 1.0d 25.4d a The spot shall be a randomly selected location on the finished sheet steel component. The weight is deemed to be the combined coating weight on both sides of the sheet steel component at that spot.

b Values in these columns correspond to the thickness value converted from the minimum single-spot column divided by 2 which results in a single sided thickness value.

c Galvanized coating thickness conversion: 1.00 oz/ft2 = 1.68 mils (7.14 g/m2 = 1.00 μm) d Zinc-aluminum-magnesium alloy coating thickness conversion: 1.00 oz/ft2 = 2.00 mils (6.01 g/m2 = 1.00 μm)

3.2.2. Thickness tolerance for Classes A and B base metal shall conform to ASTM A568/A568M Table 4.

4. ORDERING INFORMATION

4.1. Orders for guardrail beams, transition beams, end sections, buffer sections, terminal connectors, and backup plates under this specification shall include the following information, as required, to adequately describe the desired sheet steel component:

4.1.1. Quantity (linear feet or number of pieces);

4.1.2. Class;

4.1.3. Type;

4.1.4. Effective length of section for guardrail beams 12.5 ft or 25.0 ft (3.8 m or 7.6 m); or backup plates 6 in. or 12 in. (152.4 mm or 304.8 mm);

4.1.5. Shape (W, thrie, symmetrical, asymmetrical);

4.1.6. Component (beam, transition beam, end section, buffer section, terminal connector, backup plate);

4.1.7. Radius and direction of curvature (convex or concave) for curved guardrail beams, if applicable;

and

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TS-4d M 180-4 AASHTO

4.1.8. Exceptions to this specification or special requirements, if any.

4.2. Orders for fasteners under this specification shall include the following information, as required, to adequately describe the desired fastener:

4.2.1. Quantity (number of pieces);

4.2.2. Coating requirement to match guardrail type (zinc-coated, atmospheric corrosion-resistant, zinc alloy coated);

4.2.3. Grade of fastener (ASTM or ANSI/ASME designation);

4.2.4. Size of fastener (5/8-in. UNC, 16-mm coarse thread, and so on);

4.2.5. Fastener type (splice bolt [alternative 1 or 2], splice nut, post bolt [alternative 1 or 2], post nut, high strength anchor bolt, or washer);

4.2.6. Overall bolt length and threaded length of bolt; and

4.2.7. Exceptions to this specification or special requirements, if any.

4.3. Orders for steel guardrail posts under this specification shall include the following information as required to adequately describe the steel guardrail post:

4.3.1. Quantity (number of pieces),

4.3.2. Coating requirement,

4.3.3. Material grade (AASHTO or ASTM designation), and

4.4. Shape and size of post cross, Section 4.

5. BASIS OF ACCEPTANCE

5.1. All material shall be subject to inspection and sampling at the fabricating plant, warehouse, or after delivery to the site of construction.

5.2. Acceptance by Sampling:

5.2.1. The engineer will take a minimum of one piece of each sheet steel component, steel guardrail post, and anchor wire rope and swage fitting from each 200 pieces in a lot, or from each lot if less than 200 pieces are included therein, for determination of compliance with specification requirements. If one piece fails to meet the requirements, two other pieces shall be tested. If either of these pieces fails to conform to the requirements of this specification, the lot of material represented by these samples shall be rejected. A lot shall be considered that quantity of material offered for inspection at one time that bears the same heat and coating identification.

5.3. Acceptance by Brand Registration and Guarantee:

5.3.1. By mutual agreement between the fabricator and engineer, acceptance may be based on a brand registration and guarantee filed with the engineer by the fabricator. For acceptance of a brand, the fabricator shall furnish a brand registration and guarantee meeting the approval of the engineer and showing the brand name or designation; the manner in which it will appear on the fabricated sheet steel components, steel guardrail posts, or anchor wire rope and swage fittings; the typical

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TS-4d M 180-5 AASHTO mechanical properties; chemical composition, if specified; the class and type; and other specified properties. The fabricator shall also guarantee that as long as material is furnished under that brand and designation, it will conform fully to the requirements of the specification and shall be replaced without cost to the engineer when found not in conformity with any of the specified requirements.

The brand registration and guarantee shall be sworn to for the fabricator by a person having legal authority to bind the company. Upon approval of a brand registration and guarantee, that brand will be accepted without further certification. If, in subsequent actual field use, there is evidence of misbranding as determined by random sampling and detection of inadequate tensile strength, yield strength, elongation, improper coating, deficient thickness, or improper fabrication, the material will be rejected and approval for further use withdrawn until subsequently reapproved. Samples for test of any material offered for use may be taken at any time deemed desirable by the engineer.

5.3.2. The manufacturer or fabricator shall make such tests and measurements as necessary to ensure that the material produced complies with all specification requirements. These tests and measurements shall be so identified by the identification symbols or code used on the sheet steel components, steel guardrail posts, or anchor wire rope and swage fittings that the manufacturer can produce specific reports showing these test results. Copies of reports of these tests shall be kept on file and shall be submitted to the engineer on request.

5.3.3. The brand shall be removed or obliterated by the manufacturer or fabricator on all material where control tests, as outlined herein, do not show conformance to this specification.

6. MATERIALS

6.1. Base Metal for Sheet Steel—The guardrail beams, transition beams, end sections, buffer sections, terminal connectors, and backup plates shall consist of sheet produced from electric arc furnace or basic oxygen furnace steel and shall meet the mechanical properties specified in Section 8. The chemical composition of the base metal for Type IV shall be as approved by the engineer.

6.1.1. All sheet steel components including guardrail beams, transition beams, end sections, buffer sections, terminal connectors, and backup plates shall be the same type (that is, coating) as the guardrail beam to which it is attached.

6.1.2. End Section or Buffer Section—The material for end sections and buffer sections shall be of the same or greater metal thickness (that is, class) as the guardrail beam to which it is attached, unless otherwise specified by the engineer.

6.2. Zinc—The zinc used for the coating of Types I and II shall be as prescribed in ASTM B6 and shall be at least equal to the grade designated as “Prime Western.”

6.3. Zinc-Aluminum-Magnesium Alloy—The zinc-aluminum-magnesium alloy for Types V and VI shall contain 5–13 percent aluminum, 2–4 percent magnesium, and up to one percent total additional alloying elements (except iron), and the balance shall be zinc as prescribed in ASTM A1046/A1046M Section 6.2.

6.4. Fasteners:

6.4.1. Standard Strength Bolts:

6.4.1.1. Unless otherwise specified, standard strength bolts used with Types I, II, III, V, and VI sheet steel components or steel guardrail posts shall conform to or exceed the requirements of ASTM A307 Grade A (ASTM F568M Class 4.6) and shall be coated in accordance with Section 9.2.2 of this specification.

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TS-4d M 180-6 AASHTO

6.4.1.2. Standard strength bolts used with Type IV sheet steel components or steel guardrail posts shall be of an approved atmospheric corrosion-resistant material and conform to or exceed the requirements of ASTM A307 Grade A.

6.4.1.3. Thread profiles shall conform to ANSI/ASME B1.1 for 5/8-11 UNC (ASME B1.13 for M16×2) for Class 2A (6g) tolerances.

6.4.1.4. All beam-to-post connections or beam-to-beam splices shall be formed with oval shoulder, button-headed bolts to minimize projections on the traffic side of the guardrail. Standard strength bolts used in splice and post connections shall conform to one of the configurations shown in Figure 1.

Either of the alternate configurations may be furnished unless otherwise specified by the engineer.

6.4.2. High-Strength Bolts:

6.4.2.1. Unless otherwise specified, high-strength bolts used with Types I, II, III, V, and VI sheet steel components shall conform to or exceed the requirements of ASTM F3125/F3125M Grade A325 Type 1 and shall be coated in accordance with Section 9.2.3 of this specification.

6.4.2.2. High-strength bolts used with Type IV sheet steel components shall be of an approved atmospheric corrosion resistant material and conform to or exceed the requirements of ASTM F3125/F3125M Grade A325 Type 3.

6.4.3. Nuts:

6.4.3.1. Unless otherwise specified, nuts used with Types I, II, III, V, and VI sheet steel components or steel guardrail posts shall conform to or exceed the requirements of ASTM A563/A563M Grade A Heavy Hex and shall be coated in accordance with Section 9.2.4 of this specification.

6.4.3.2. Nuts used with Type IV sheet steel components or steel guardrail posts shall be of an approved atmospheric corrosion resistant material and conform to or exceed the requirements of ASTM A563/A563M Grade C3 Heavy Hex.

6.4.3.3. Nuts used in splice and post connections shall conform to the configuration shown in Figure 1.

The nut may have recesses on one or both sides.

6.4.4. Washers:

6.4.4.1. Plain round washers, when specified under a nut, shall be manufactured according to the requirements of ASME B18.21.1 Type B (ASME B18.22M Type B). When required, the washers shall be galvanized in accordance with Section 9.2.5 of this specification.

6.4.4.2. Hardened washers used with high-strength fasteners shall be manufactured according to the requirements of ASTM F436/F436M Type 1 and coated in accordance with Section 9.2.5 of this specification unless atmospheric corrosion resistant steel washers are used. When atmospheric corrosion resistant steel washers are used, they shall be manufactured according to the requirements of ASTM F436/F436M Type 3.

6.4.4.3. When specified under the head of button-head shouldered bolts, washers, shall be rectangular with a slotted hole, as shown in Figure 2. Washers are not to be used under the bolt head for strong-post guardrails unless specified by the designer.

6.4.4.4. When specified under the head of hex-head bolts, such as in some weak-post systems, washers shall be square with a round hole, as shown in Figure 2.

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TS-4d M 180-7 AASHTO

6.4.4.5. Rectangular or square washers used with Types I, II, III, V, and VI sheet steel components or steel guardrail posts shall be manufactured from ASTM A653/A653M SS Grade 37 or equivalent steel and galvanized in accordance with Section 9.2.6 of this specification. Unless otherwise specified, washers used with Type IV sheet steel components shall be manufactured from ASTM A606/A606M or other approved atmospheric corrosion-resistant steel.

6.5. Steel Guardrail Posts:

6.5.1. Steel guardrail posts shall meet the mechanical properties specified in Section 8 and coating requirements specified in Section 9. Acceptable materials and grades include but are not limited to the following standards:

M 270M/M 270, Grade 36 (250) or Grade 50S (345S) with the exception of supplementary requirements;

ASTM A36/A36M;

ASTM A572/A572M, Grade 42 or Grade 50; or

ASTM A992/A992M.

6.5.2. Where atmospheric corrosion-resistant steel is required, the steel guardrail posts shall meet the mechanical properties specified in Section 8. Acceptable materials and grades include but are not limited to the following standards:

M 270M/M 270, Grade 50W (345W); or

ASTM A588/A588M.

6.6. Anchorage Wire Rope and Swage Fittings:

6.6.1. The anchor wire rope shall be 0.75-in. (19-mm) diameter, metallic-coated wire rope, Type II(a) 6 ×19 wire-strand core (WSC) or Type II independent wire rope core (IWRC), right regular lay wire rope.

6.6.2. The anchor wire rope swage fittings shall be machined from hot-rolled carbon steel conforming to ASTM A576 Grade 1035. The material shall be suitably annealed for cold swaging.

6.6.3. A lock pin hole shall be drilled through the head of the anchor wire rope swage fitting and a 0.25-in. (6-mm) plated spring-steel pin shall be installed in the hole to retain the stud in the proper position.

6.6.4. Materials used for anchorage wire rope and swage fittings (typically used as part of a trailing end anchor) under this specification shall follow the requirements of M 30 Section 5.

7. MANUFACTURE

7.1. Guardrail beams, transition beams, end sections, buffer sections, and terminal connectors shall be shaped and punched in conformance with the requirements shown in Figures 2 and 3. Transition beams shall be fabricated in accordance with Figure 4 and shall provide a smooth and uniform transition between guardrail beams. Two common methods for shaping sheet steel components are roll forming and press forming; these two processes result in different levels of springback, which must be accounted for in the forming process to ensure proper bolt hole alignment, nesting and lapping of sheet steel components. Sheet steel components shall be ready for assembly when delivered.

7.2. Only drilling or cutting necessary for special connections and for sampling will be permitted in the field. Guardrail beams to be erected on a radius of 150 ft (46 m) or less shall be shop-curved to the appropriate curvature of the installation. Shop-curved guardrail beam should be provided in 1-ft

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TS-4d M 180-8 AASHTO

(0.3-m) increments of curvature with a minimum radius of curvature of 5 ft (1.5 m). Due to the nature of long lengths of guardrail beam, there is flexibility to match the curvature required upon installation in the field.

8. MECHANICAL PROPERTIES

8.1. The mechanical properties of the base metal for sheet steel components shall conform to the following requirements:

8.1.1. Guardrail Beams, Transition Beams, and Terminal Connectors:

(a) Yield point, minimum, 50 ksi (345 MPa);

(b) Tensile strength, minimum, 70 ksi (483 MPa); and

(c) Elongation, in 2 in. (50 mm), minimum, 16 percent.

8.1.2. End Sections, Buffer Sections, and Backup Plates:

(a) Yield point, minimum, 33 ksi (227 MPa); and

(b) Tensile strength, minimum 45 ksi (310 MPa).

8.1.3. Test specimens for mechanical properties testing shall be prepared and tested as specified in

ASTM A924/A924M.

8.2. The mechanical properties of the guardrail fasteners shall conform to the following requirements:

8.2.1. Standard Strength Bolts—Shall conform to the mechanical property requirements specified in the appropriate referenced standards identified in Section 6.4.1.

8.2.2. High-Strength Bolts—Shall conform to the mechanical property requirements specified in the appropriate referenced standards identified in Sections 6.4.2.

8.2.3. Nuts—Shall conform to the proof load requirements specified in the appropriate referenced standards identified in Section 6.4.3.

8.2.4. Washers—Shall conform to the mechanical property requirements specified in the appropriate referenced standards identified in Section 6.4.4.

8.3. The mechanical properties of the steel guardrail posts shall conform to the appropriate referenced standards identified in Sections of 6.5 of this specification and the following requirements, unless otherwise specified by the engineer:

(a) Yield point, minimum, 36 ksi (250 MPa);

(b) Tensile strength, 58 to 80 ksi (400 to 550 MPa); and

(c) Elongation, in 2 in. (50 mm), minimum, 21 percent.

8.4. The mechanical properties of anchor wire rope and swage fittings shall conform to the following requirements:

8.4.1. Anchorage Wire Rope—The anchor wire rope steel shall be improved steel with a minimum breaking strength of 42.8 kips (190 kN).

8.4.2. Anchorage Wire Rope Swage Fittings—The anchor wire rope swage fitting, stud, and nut shall develop the full breaking strength of the wire rope.

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Deborah Kim

TS-4d M 180-9 AASHTO

9. COATING REQUIREMENTS

9.1. Sheet Steel Components:

9.1.1. Type I and II Sheet Steel Components—The sheet steel components shall be galvanized either before fabrication in accordance with ASTM A653/A653M or after fabrication in accordance with ASTM A123/A123M, except as otherwise superseded by this specfication. The mass and thickness of coating for each sampled steel sheet component (see Section 5.2.1) shall conform to the requirements prescribed in Table 1 for the types specified.

9.1.1.1. The zinc coating shall be of prime finish, that is, free from injurious defects such as blisters, flux, and uncoated spots. Uncoated edges resulting from transverse shearing or punching of holes will not be considered objectionable.

9.1.1.2. The coating shall be smooth, free of beading or sharp projections along the edges, and shall adhere tenaciously to the surface of the metal. The adherence of the zinc coating to the surface of the base metal shall be determined by cutting or prying with a stout knife, applied with considerable pressure in a manner tending to remove a portion of the coating by paring or whittling, and it shall not be possible to peel any portion of the coat--ing so as to expose the base metal.

9.1.1.3. Precautions shall be taken during the shipping and storage processes to limit the opportunity for wet storage stain (that is, white rust) to form before the protective patina is formed on the galvanized surface. Sheet steel components shall be arranged to encourage airflow and limit standing water on the galvanized surface, along with water repellent or barrier coatings to eliminate the formation of wet storage stain. If areas affected by wet storage stain become darker or show signs of red rust the area shall be cleaned, the remaining coating thickness checked, and, if required, touch-up galvanizing shall be performed as prescribed in Section 9.5.

9.1.1.4. The test specimen size and method of tests for determining the mass of coating shall be as prescribed in T 65M/T 65. At the option of the engineer, sheet steel components may be accepted on the basis of magnetic gauge determinations made in accordance with ASTM E376 and conforming to the values in Table 1.

9.1.2. Type III Sheet Steel Components—Sheet steel components that are to be painted shall be cleaned and shop-painted with one coat of rust-inhibitive primer. The primer shall have a tough and durable surface and shall be thoroughly dry before the sheet steel components are handled or packed for shipment.

9.1.3. Type IV Sheet Steel Components—Sheet steel components made of atmospheric corrosion-resistant steel shall not be painted or galvanized. They shall be so handled and stored so that the traffic face of these sheet steel components, used in a continuous run of guardrail, shall not show a distinctive color differential.

Note 1—When Type IV sheet steel components are in direct contact with each other or with other atmospheric corrosion-resistant steel components, they can potentially fuse together as a result of the weathering process, making repair or replacement difficult.

9.1.4. Type V and VI Sheet Steel Components—The sheet steel components shall be zinc-alloy-coated before fabrication and shall be coated in accordance with ASTM A1046/A1046M Type 1, except as otherwise superseded by this specfication.

9.1.4.1. The mass and thickness of coating for each sampled steel sheet component (see Section 5.2.1) shall conform to the requirements prescribed in Table 1 for the types specified.

9.1.4.2. The zinc alloy coating shall be of prime finish, that is, free from injurious defects such as peeling, lamination, and uncoated spots. Uncoated, bare edges resulting from transverse shearing, © 2025 by the American Association of State Highway and Transportation Officials.

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Paige Prudhon Line

TS-4d M 180-10 AASHTO longitudinal slitting, and punching of holes are permissible and expected for Type V and VI sheet steel components.

9.1.4.3. The coating shall be smooth, free of beading or sharp projections along the edges, and shall adhere tenaciously to the surface of the metal. The adherence of the zinc-aluminum-magnesium alloy coating to the surface of the base metal shall be determined by cutting or prying with a stout knife, applied with considerable pressure in a manner tending to remove a portion of the coating by pairing or whittling, and it shall not be possible to peel any portion of the coating so as to expose the base metal.

9.1.4.4. The test specimen size and method of tests for determining the mass of coating shall be as prescribed in T 65M/T 65. At the option of the engineer, sheet steel components may be accepted on the basis of magnetic gauge determinations made in accordance with ASTM E376 and conforming to the values in Table 1.

9.2. Fasteners:

9.2.1. All components of mating fasteners (bolts, nuts, and washers) shall be coated by the same zinc coating process, and the supplier’s option is limited to one process per item with no mixed processes in a lot.

9.2.2. Standard Strength Bolts—The bolts shall be hot-dip zinc-coated in accordance with the requirements of ASTM F2329/F2329M or mechanically zinc-coated in accordance with ASTM B695, Class 55, Type 1.

9.2.3. High-Strength Bolts—The bolts shall be hot-dip zinc-coated in accordance with the requirements of ASTM F2329/F2329M or mechanically zinc-coated in accordance with ASTM B695, Class 55, Type 1.

9.2.4. Nuts—The nuts shall be hot-dip zinc-coated in accordance with the requirements of ASTM F2329/F2329M or mechanically zinc-coated in accordance with ASTM B695, Class 55, Type 1.

9.2.5. Plain Round and Hardened Washers—The washers shall be hot-dip zinc-coated in accordance with the requirements of ASTM F2329/F2329M or mechanically zinc-coated in accordance with ASTM B695, Class 55, Type 1.

9.2.6. Rectangular and Square Washers—The washers may be galvanized before or after fabrication.

Rectangular and square washers shall conform to the requirements of M 232M/M 232.

9.3. Steel Guardrail Posts:

9.3.1. After the steel guardrail post has been cut to length and all holes have been drilled or punched, the steel guardrail post shall be zinc-coated (hot-dip galvanized) in accordance with ASTM A123/A123M, except as otherwise superseded by this specification. If atmospheric corrosion resistant steel is used, the portion of the steel guardrail post to be embedded in the soil need only be galvanized. Each guardrail post sampled in accordance with Section 5.2.1 shall be considered a single-specimen article when checking the requirements for coating thickness in accordance with ASTM 123/123M. If only one post is sampled, it shall meet the average coating thickness requirements of ASTM A123/A123M Table 1. If two or more posts are sampled, the average coating thickness of all sampled posts shall meet the requirements of ASTM A123/A123M Table 1; and the minimum average coating thickness for each individual post shall be one grade less than that required by ASTM A123/A123M Table 1.

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MARCH 2026 ERRATA

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TS-4d M 180-11 AASHTO

9.3.2. Precautions shall be taken during the shipping and storage processes to limit the opportunity for wet storage stain (that is, white rust) to form before the protective patina is formed on the galvanized surface. Steel guardrail posts shall be arranged to encourage airflow and limit standing water on the galvanized surface, along with water repellent or barrier coatings to eliminate the formation of wet storage stain. If areas affected by wet storage stain become darker or show signs of red rust, the area shall be cleaned, the remaining coating thickness checked, and, if required, touch-up galvanizing shall be performed as prescribed in Section 9.5.

9.4. Anchorage Wire Rope and Swage Fittings:

9.4.1. Anchor Wire Rope— For each sample of anchor wire rope (see Section 5.2.1), the mass of coating shall conform to the requirements prescribed in M 30 Grade A: 0.5 oz/ft2 (152 g/m2).

9.4.2. Anchor Wire Rope Swage Fittings—Wire rope swage fittings used in anchorages shall be zinc-coated before swaging according to ASTM A123/A123M, except as otherwise superseded by this specification. Each swage fitting sampled in accordance with Section 5.2.1 shall be considered a single-specimen article when checking the requirements for coating thickness in accordance with ASTM 123/123M, and shall meet the average coating thickness requirements of ASTM A123/A123M Table 1.

9.5. Galvanizing Repair:

9.5.1. Where the galvanizing on the surface of sheet steel components, steel guardrail posts, or anchorage wire rope and swage fittings has been damaged or disturbed during field modifications beyond the limits in ASTM A123/A123M, the coating shall be repaired by regalvanizing, or the surface repaired by painting with two coats of zinc dust/zinc oxide paint conforming to ASTM A780/A780M.

9.5.2. Field-drilled holes need not be repaired unless there is significant damage to the galvanized surfaces surrounding the holes after drilling.

10. DIMENSIONS

10.1. Sheet Steel Component Thickness:

10.1.1. The minimum thickness for the finished sheet steel components shall conform to the requirements as prescribed in Table 2.

Table 2—Finished Sheet Steel Component Thickness Class A Class B Minimum

Finished Thickness Minimum

Finished Thickness

in. mm in. mm

Type No Tolerance Under, No Limit for Over Thickness I 0.103 2.62 0.133 3.38

II 0.106 2.69 0.136 3.45

III 0.100 2.54 0.130 3.30

IV 0.100 2.54 0.130 3.30

V 0.1016 2.58 0.1316 3.34

VI 0.1020 2.59 0.1320 3.35

Note: See Section 3.2 for coating and base metal thicknesses and tolerances.

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TS-4d M 180-12 AASHTO

10.1.2. For fabricated sheet steel components, thickness measurements will be made on tangent portions of the cross section.

10.2. Guardrail Beam Width:

10.2.1. Guardrail beam shall be formed from sheet steel having nominal widths of 19 in. (483 mm) for W-beams and 29.5 in. (749 mm) for thrie-beams. Tolerance from the nominal width of minus

0.125 in. (3.2 mm) will be permissible. Symmetrical and asymmetrical transition beams shall be formed from sheets of nominal widths to ensure connection to the W-beam on one end and thrie beam on the other end.

Note 2—The requirements of Section 10.2.1 are intended to define the minimum permissible width for guardrail and transition beams. Calculation of exact width dimensions from Figures 2 and 3 shows that the finished product may slightly exceed these widths. However, the dimensions of Figures 2 and 3 can be met within allowable tolerance by using the nominal widths. Use of sheet steel slightly greater than the nominal widths is permissible provided the tolerances in Figures 2 and 3 are met.

11. MARKING

11.1. Sheet Steel Components:

11.1.1. Each sheet steel component shall be identified by the following for traceability:

Name or brand of manufacturer, Identification symbols or code for heat number, Identification symbols or code for coating lot (optional), AASHTO specification number, Class and type, and Radius of guardrail beam, if applicable.

11.1.2. When the radius of a curved guardrail beam requires shop-bending, an additional four-character field shall be marked to indicate the direction of curvature of the guardrail beam and the radius.

The first character shall be “1” for convex or “2” concave. The next three characters shall indicate the radius, measured in feet (for example, a 90-ft radius concave guardrail beam would be marked “2090”). When required, radius markings shall be placed between 18 and 24 in. (457 and 610 mm) of each end of the guardrail beam; radius markings are intended to be separate from the traceability markings.

11.1.3. Markings shall not be placed at such a location that they will be obscured after erection or in a manner that they will be conspicuous to traffic, as shown in Figure 5. Markings placed on the traffic face of the sheet steel component shall be placed in the valley of a corrugation and shall be die-imprinted with letters and numerals having a maximum height of 1.25 in. (32 mm) and a minimum height of 0.75 in. (19 mm), and shall be clearly legible after galvanization of the sheet steel component.

11.1.4. Markings shall resist obliteration during storage, transportation, and erection.

11.1.5. Markings for end sections, buffer sections, terminal connectors, and backup plates may be on durable tags securely attached to each section or bundle, unless the engineer requires each individual piece be marked.

11.2. Fasteners:

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TS-4d M 180-13 AASHTO

11.2.1. Standard-Strength Bolts—Marking for standard-strength bolts shall be in accordance with ASTM A307 Sections 14 and 15 or equivalent.

11.2.2. High-Strength Bolts—Marking for high-strength bolts shall be in accordance with ASTM F3125/F3125M Sections 5 and 16 or equivalent.

11.2.3. Nuts—Marking for nuts shall be in accordance with ASTM A563/A563M Sections 14 and 15 or equivalent.

11.2.4. Washers—Marking for washers shall be in accordance with Section 6.4.4.

11.3. Steel Guardrail Posts:

11.3.1. Each steel guardrail post shall be identified by the following:

11.3.1.1. Name, brand, or symbol for manufacturer;

11.3.1.2. Manufacturing location (if applicable);

11.3.1.3. Week of the year the steel guardrail post was fabricated (two-digit number);

11.3.1.4. Year the steel guardrail post was fabricated (last two digits of the year); and

11.3.1.5. Identification symbols or code for heat number.

1…