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Project Development > Highway Design > Standard Specifications

NHDOT Supplemental Specifications (2010 Edition) - updated January 23, 2015

The table below is a list of all Supplemental Specifications that have been adopted as additions or revisions to the Standard Specifications for Road and Bridge Construction, August 2010 Edition.

Standard Specifications for Road and Bridge Construction, July 2006 Edition Supplemental Specifications

Section Description Revision Last
Revision
Date
Current
Revision
Date
Division 100
104.04 Scope of Work Clarifies what materials may be re-used or mined   01/23/15
104.07 Railway-Highway Provisions Specifies the NHDOT will reimburse the Railroad for Flagging Services through Force Account Agreements   01/14/15
107.01 Laws to be Observed Bulletin Board Requirements 11/07/12 04/05/13
107.01 Legal Relations and Responsibility to Public Revises wording pertaining to discharge and spillage into water   01/23/15
108.06 Methods and Equipment Highlights Contractor's responsibilty to prevent runoff of polluting materials   01/23/15
108.09 Failure to Complete on Time Liquidated Damages Chart 10/05/10 04/14/14
109.04 Differing Site Conditions, Changes and Extra Work Regional Adjustment Factor 03/12/10 09/01/10
109.04.4.4 Equipment and Plant Rental Equipment Mark-up   11/07/12
109.09 Payments to Subcontractors Prompt Payment   09/06/11
109.11 Measurement and Payment Final Pay Quantity   11/07/12
Division 200
214 Fine Grading 3.1 – Amends the tolerance for specific slopes prior to paving to 0.2%   01/10/13
Division 300
304 Aggregate Base Course 3.1.4 – Specifies what recycled materials can be used as an aggregate base course   01/23/15
306 Reclaimed Stablized Base 3.2 – Specifies what is to be done when stone is included or ordered   01/23/15
Division 400
401 Recycled Asphalt Shingles; TRB Amends 1.2 & 2.10 – Disallows use of Recycled Asphalt Shingles in Asphalt Amends 2.4.3 – Amends use of Total Reclaimed Binder (TRB)   11/25/14
401 Recycled Oil in Asphalt Amends 2.2.1 – Disallows use of used
oil in Asphalt
Adds 2.2.3.1 – Disallows use of used
oil in Asphalt
  09/08/14
401 Job Mix - General

2.5.1 - Revises ESAL/Minimum Binder Content Criteria and adds more sizes into Table 1

2.5.1.1 – Specifies that all 25mm base course mixes be designed using 50 gyration

01/10/13 01/23/15
401 Asphalt Modifiers 2.11 - Adds QC/QA Specifications to High-Strength Mix Quantities over 2,000 Tons   01/10/13
401 MSCR Test 2.11.1 – Changes the requirements to AASHTO M 332   01/23/15
401 Warm Mix Asphalt

2.11.2 – Allows the use of WMA

3.4.11, 3.6.3.1 & 3.10.7.2 – Amends minimum delivery temperature to 260 ° F

  01/23/15
401 Joints 2.12.1 - Adds Pavement Joint Adhesive Properties
3.13.4 – Assures full head of Material for Permanent Transverse Joints
3.13.5 - Removes Requirement for Hot Air Lance, Adds Requirements for Melting Kettle, and Allows Echelon Paving In Lieu of Pavement Joint Adhesive
  01/10/13
401 Placing

Adds 3.10.4 - Sets limit of maximum compaction at 5 inches.

3.10.7.2 - Adds reference to WMA Supplemental

03/27/15 01/23/15
401 Pavers Removes 3.11.3 – Performance Requirements to 3.11.1.1 for both QC/QA and Method Work
Renames 3.11.1.1.1 – MTV Requirements to 3.11.3 and Assures Ability to Re-mix and Movable Discharge Conveyors for MTVs
12/14/11 01/23/15
401 Roller Trains 3.12.1 - Clarifies the equipment needed for a roller train   01/23/15
401 Compaction 3.12.2.4 (formally 3.12.1.4) - Requires Informational Density Cores on Shoulders and Lessens Density Penalty for Overlays Not Previously Leveled   01/10/13
401 Acceptance Testing - Air Voids 3.17.3.2 - Revises AASHTO reference to ASTM reference, Requires Information Shoulder Cores, Eliminates Upper Limit of Core Thickness   01/10/13
401 Disputed Cores

3.17.3.2.2 - Amends number of cores required in a dispute to be three

  01/23/15
401 Pavement Thickness 3.17.3.3 - Clarifies what should and should not be measured for thickness   01/23/15
401 Cross Slope Tolerance 3.17.3.5.2 - Amends cross slope tolerance to be 0.2%   01/23/15
401/403

401 - Plant Mix Pavements - General

403 - Hot Bituminous Pavement

Removes Final Pay Status for bridge base pavement  

03/27/14

410.2.1 Bituminous Surface Treatment

2.1 - Identifies Asphalt Emulsion Grades & Changes last line in table to Celsius, as well as changes the CRS-1 and CRS-1h temperature values

5.3 - Updated refrence due to 401.3.10 revision

03/11/14 03/27/14
411 Surface Treatment

2.11.1 - Specifies Asphalt binder PG grade will be called for via Special Provision

2.1.2 - Removes Type G mix from use

3.4.4 - Amends minimum delivery temperature to 260o F (except for specified circumstances)

  01/23/15
417 Cold Planing Bituminous Surfaces 3.1.1 & 3.1.3 - Specifies acceptable equipment for planing bituminous surfaces   01/23/15
Division 500
511 Preparation for Concrete Bridge Deck Repairs Adds the Application of Anti-corrosion Coating to Uncoated Reinforcing Steel in Patch Areas   01/10/13
520 Bearing Strips

Replaces 2.8 - Identifies bearing strip material and bonding agent.

Adds 3.6.3.3 - Specifies Bearing Strips

Amends 2.3.3.2 to update references to corrosion inhibitors

03/27/14 01/14/15
520 Excess Cover and Grout

2.9 - Removes Concrete Bonding Agent

2.9.1 - Removes bridge deck overlays

5.9.5.2 - Addresses negative pay adjustment for excess cover over Rail Support Slabs

  01/23/15
520 Portland Cement Concrete Specifies the Surface Resistivity Test as a replacement for Rapid Chloride Penetration Test   01/23/15
528 Prestressed Concrete Members Specifies the Surface Resistivity Test as a replacement for Rapid Chloride Penetration Test   01/23/15
538 Barrier Membrane

3.1.1 & 3.3.1.4 – Adds Requirement of Digital Ambient Temperature, Dew Point, and Infrared Surface Temperature Instruments
3.3.5 – Specifies Laydown Temperature of Pavement Overlays

01/10/13 01/23/13
559 Asphaltic Plug Expansion Joint, Asphaltic Plug Crack Control New Section   10/16/13
560 Prefabricated Compression Seal Expansion Joint Complete Revision of Section   10/16/13
561 Prefabricated Expansion Joint Complete Revision of Section   10/16/13
563 Bridge Railing Remove Final Pay (F) from Items   11/07/12
566 Elastomeric Joint Seal Deletes Section 566   01/23/15
582 Slope Paving Removes Bed of Sand Requirement   11/25/14
591 Structural Plate Pipes, Pipe-Arches, and Arches 3.1.2 - Expands LRFD Bridge Construction Specifications to include assembly and installation of structural plate structures   01/23/15
593 Geotextile Amends paragraphs 2.1 and replaces 2.3.2 to present NTPEP audit program and update test methods.   03/27/14
Division 600
603 Culverts and Storm Drains

Revises 1.1 and 5.1 - Stipulates sawed pavement required for this work shall be subsidiary

Adds 3.1.10 – Conformance to 628.3.4

Amends 2.9.1 – PVC Manufacturers' Participation in NTPEP

Revises structure of Materials section and adds new requirements for pipe manufacturers.

04/14/14 06/30/14
604 Catch Basins, Drop Holes, and Manholes

Revises 1.1 and 5.1 - Stipulates sawed pavement required for this work shall be subsidiary

Adds 3.1.3 – Conformance to 628.3.4
  04/14/14
605 Underdrains Adds 605.2.3 – PVC Manufacturer's Participation in NTPEP   06/30/14
606 Guardrail Updates Retroreflective Sheeting to current AASHTO standards   01/23/15
606 Guardrail Amends 3.3 to require the Contractor provide detail sheets   01/14/15
608 Detectable Warning Devices Revises Description, Equipment, and Construction Requirements sections   06/30/14
614 Electrical Conduit

Revises 1.1 and 5.1 - Stipulates sawed pavement required for work shall be subsidiary

Adds 3.1.3 – Conformance to 628.3.4
  04/14/14
618 Training Requirements for Uniformed Officers and Flaggers

Delete and Add revised Description, Equipment, and Construction Requirements sections

2.1 - Specifies blue lights of officers' vehicles having 360 ° Visibility

01/04/12 01/23/15
619 Trailer Mounted Speed Signs

2.1.3 & 2.1.3.1 - Updates Retroreflective Sheeting to current AASHTO standards

3.2.3.1 - Revises how the Contractor gets approval

  01/23/15
621/622 621-Delineators
622-Markers and Bounds

621 – AASHTO Update & Required
Documentation; specifies posts;
updates colors
622 – Required Documentation

04/03/14 09/08/14
624 Railroad Protection Removes Railroad Protection as a pay item and updates the reference to Section 104.07   01/14/15
628 Sawed Pavement

Replaces 5.2 and Adds 4.2 - Stipulates sawed pavements requirements and the work it shall be subsidiary for

Adds 5.3 – When payment is under 628.3
  04/14/14
632 Retroreflective Pavement Markings

Add 2.2.1 - Arsenic and Lead Levels in Glass Beads

Delete 632.3.2.8.1 & 632.3.2.8.2

03/07/11 11/07/12
644 Grass Seed – Slope Seed
(WF) Type 45 Mix
Amend 2.3   10/02/11
645 Erosion Control

3.2.1.2 - Clarifies ambiguous CESSWI language

3.1.7 – Amends Requirement for Permanent Stabilization from 14 Days to 3 Days

Amends 4.6.1, 4.6.1.1, and 5.6 regarding SWPPP and SWPPP monitoring measurement and payment

01/24/14 01/23/15
698 Field Office Facilities Updates Field Offices and Required Equipment by Replacing Section 698 01/15/12 01/06/15
Division 700
718 Retroreflective Sheeting Updates for current ASTM Specifications and Removal of Certain Film Requirements 09/04/13 11/06/13

Do you have a question or comment concerning these Supplemental Specifications? E-mail our Contracts and Specifications Office.





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