Doing Business: NJTA Design Manual

Summary of Revisions

Content Date Revised Sections /
Document Change Memo
Issuance of Design Manual June 6, 2007 All N/A
Revised 3rd sketch in Exhibit 1A-40, U-Turn Structural Section August 2, 2007 1A.5.3 N/A
Added paragraph under “The Extreme Event Limit States – Direction” to provide Load Ratings for new bridges as required by the NBIS for Structural Inventory and Appraisal (SI&A) database August 2, 2007 2.2.1 N/A
Revised 3rd paragraph of Subsection Direction on replacing existing inlets with Eco Grate or curb piece June, 2007 4.7.5 N/A
Design requirement for seismic evaluations is revised to reflect current NEHRP (2003) provisions December 18, 2007 DCA2007-DM-1
Revised Exhibit 1A-23 to include absolute minimum values for ramp lane widths December 18, 2007 1A.3.4 DCA2007-DM-2
Correction of typographical error in the shoulder widths of Exhibits 2-108 and 2-100 December 5, 2007 Exhibits 2-108 and 2-110 DCA2007-DM-3
Revised language in the first and fifth paragraphs of this Section for Span-type Sign Structures December 21, 2007 DCA2007-DM-4
Additional guidance provided for the selection of cantilevered or non-cantilevered piers August 25, 2008
Revised Exhibit 2-214 for general guidelines on Turnpike pier details August 25, 2008 2-214
Construction of Longitudinal Joints for Wide Structures August 25, 2008
Guidance provided for the use of integral abutments on bridges August 25, 2008
Revised Exhibit 2-200 abutment plans August 25, 2008 2-200
Additional Design Structural Software October 15, 2008
Revision of Garden State Parkway Pavement Section Exhibits 1B-13, 1B-14 and 1B-15 November 21, 2008 1 B.3.2– Exhibits 1B-13, 1B-14 and 1B-15
Reinforcement Steel April 07, 2009
Replacing entire section June 3, 2009 2 DCA2009-DM-2 Section 2
Revisions made to the joint class required for precast concrete construction barrier used as a bridge parapet. July 30, 2009 9.8.3 DCA2009-DM-03
Creation of new section for Design Manual, Section 12 entitled Environmental Engineering September 2, 2009 12 DCA2009-DM-04
Clarification on the concrete classes used for different elements of noise barrier construction June 16, 2010 DCA2010-DM-01
Revision to preclude the use of cantilevered sections of abutment wingwalls ("elephant ears") to eliminate future settlement of adjacent approch shoulders due to poor compaction of soils below the cantilevered section. June 16, 2010 DCA2010-DM-02
New subsection 11 added to Subpart  Clairification provided to the design engineers regarding the design of thermal movements for deck joints. Guidenance is alos provided as to the joint type, either strip seal or modular, to be used on maximum movement ratings. July 13, 2010


Included language providing design engineers with guidance for the design speed to be used for the design of temporary impact attenuators as MUTCD and AASHTO Roadside Design Guide do not provide any recommendations. July 19, 2010 DCA2010-DM-04
A new subsection has been added providing guidance to the design engineers regarding different aspects to be considered during the design phase when traffic shifts are required. July 19, 2010 9.7.6 DCA2010-DM-05
Allowed the use of Class A concrete with concrete penetrating sealer in situations where only a small quantity is required it is cost prohibitive or unnecessary to use HPC. July 19, 2010 DCA2010-DM-06
Changes have been made to introduce the LRFR manual to design engineers and stipulate its usage for new and rehabilitation bridge design projects, this revision also stipulate the deliverables required to be submitted as part of the Phase C submission. July 20, 2010 2.2.1 and 2.2.2 DCA2010-DM-07
Language has been added to direct design engineers when and where conduit shall be placed in parapets on New Jersey Turnpike Authority structures. July 21, 2010 DCA2010-DM-08
Changes have been made to include a revision to the AASHTO LRFD Bridge Design Specifications regarding vehicle and railway collisions with structures. July 21, 2010 2.2.2 DCA2010-DM-09
Revised the language under maintenance considerations to update and clarify design layout guidance for access to areas between noise barriers and Right-of Way lines for inspection, repairs, maintenance, etc. based on comments received from NJTA Maintenance Department on Widening Program design submissions. July 21, 2010 2.7.5(3) DCA2010-DM-10
To include provisions for design of end diaphragms to accommodate service conditions and future use as jacking points for bearing replacements where jacking could be performed under traffic. To include access to the portions of steelwork, girders and end diaphragms for inspection, maintenance, repairs, jacking and future cleaning and painting. July 21, 2010 DCA2010-DM-11
Language has been added to provide guidance to the design engineers regarding shoulder widths on NJTA and GSP Roadways. August 20, 2010 2.2.1 DCA2010-DM-12
Sections 1A, 1B, and 3 have been revised to accommodate current design standards/trends and address consistency with recently updated Standard Drawings and Details. August 30, 2010 1A, 1B, and 3 DCA2010-DM-13
Seismic design criteria for NJTA owned bridges has been revised to accommodate recently introduced changes to the AASHTO LRFD Bridge Design Specifications and its companion seismic design guide specifications September 9, 2010 2.2.6 DCA2010-DM-14
Seismic design criteria for noise barriers has been revised to accommodate recently introduced changes to the AASHOT LRFD Bridge Design Specifications and its companion seismic design guide specifications September 9, 2010 2.7.3 DCA2010-DM-15
Deletion of the first paragraph of Section and the last paragraph of Section 2.2.2 that were inadvertently not deleted as part of DCA2010-DM-07 September 27, 2010 and 2.2.2 DCA2010-DM-16
Design Manual Section 4 has been revised to include High Density Polyethylene pipe (HDPE) and Ductile Iron pipe, to eliminate the use of Corrugated Aluminum/Steel pipe, to revise Inlet designations of D-inlets and G-grates and to revise designation of “Stream Encroachment” to “Flood Hazard Area”. September 30, 2010 4 DCA2010-DM-17
Changes have been made to clarify that the modification to the AASHTO LRFD Bridge Design Specifications regarding live loads are not to be applied to modular joint design. November 5, 2010 2.2.2 DCA2010-DM-18
To correct an erroneous exhibit detail reference. November 5, 2010 DCA2010-DM-19
To update language to assure that current parameters will define the economy of steel fabrications. This rule of thumb for the 50% rule for flange plate transitions is provided by the National Steel Bridge Alliance (NSBA). The current Design Manual language is overly restrictive. November 5, 2010 DCA2010-DM-20
Changes have been made to delete the allowance for a future wearing surface on bare concrete deck bridges. November 5, 2010 2.2.2 and DCA2010-DM-21
The erroneous requirement that the reinforcement support bars be galvanized has been deleted. November 9, 2010 2-303 DCA2010-DM-22
To identify and update considerations and requirements for design of alternate retaining walls, prefabricated modular walls and mechanically stabilized embankment walls for NJTA projects. December 8, 2010 2.3.2 DCA2010-DM-23
To revise the exhibits to conform with the recent Design Manual and Specification updates for the design of alternate retaining walls, prefabricated modular walls and mechanically stabilized embankment walls on NJTA projects. January 14, 2011 Series 500 Exhibits DCA2011-DM-01
Section 2.5 and various Exhibits in the Structures Design Section pertaining to Turnpike and Parkway Overhead and Cantilever Sign Structures require revision to comply with the new Garden State Parkway Sign Structure Standard Drawings SI-35, SI-39, SI-40 and SI-41. The affected Exhibits are 2-404, 2-405, 2-408, 2-409, 2-410, 2-411 and 2-412. April 5, 2011 Subsection 2.5 and Series 400 Exhibits DCA2011-DM-02
Outdated language regarding the selection of bridge bearings has been deleted and additional language has been added to guide the designers in selection of bearings for new and retrofitted bridges. June 21, 2011 Subsection DCA2011-DM-03
To clarify how the impact load from the barrier parapet is to be applied to the proprietary retaining wall. June 22, 2011 Subsection DCA2011-DM-04
This DCA is essentially a relocation of Section from “Superstructure Design” to “Modifications to Current Codes” so it is more clear that the desired thermal effects are to be applied for all aspects of bridge design. June 29, 2011 Subsection DCA2011-DM-05
This DCA provides guidance for the use of Exhibit 3-4. November 3, 2011 Section 3, Subsection 3.2.2 DCA2011-DM-06
Design standard minimums have been updated for bridge mounted lighting to mitigate fatigue issues in welded aluminum light standards.  Light standard vendors must now examine fatigue issues related to bridge mounted structures prior to being permitted to bid fabrication of these items. November 7, 2011 Subsection 2.6 DCA2011-DM-07
Clarifies that Class P Concrete shall be used for all precast elements. November 9, 2011 Subsection and 2.7.8 DCA2011-DM-08
Replaces Corrugated Metal Pipe (CMP) with High Density Polyethylene Pipe (HDPE) for underdrain pipe due to corrosion issues with CMP. Also eliminates an incorrect callout at the approach slab that conflicts with Standard Drawing BR-6. November 9, 2011 Exhibit 2-201 DCA2011-DM-09
Replaces Corrugated Metal Pipe (CMP) with High Density Polyethylene Pipe (HDPE) for underdrain pipe due to corrosion issues with CMP. November 9, 2011 Subsection 2.3.6d, Exhibit 2-203 & Exhibit 2-204 DCA2011-DM-10
Clarifies that the pile sleeve shown is required as per design only. November 9, 2011 Exhibit 2-205 DCA2011-DM-11
Provides direction to the design engineer regarding pier column reinforcement detailing beyond the AASHTO LRFD code. November 17, 2011 Subsections 2.2.2 DCA2011-DM-12
This change provides more freedom to the design engineer regarding superstructure design in certain situations resulting in more economical designs November 17, 2011 Subsections DCA2011-DM-13
Changes have been made to introduce the NJTA Load Rating Manual to design engineers and stipulate its usage for new and rehabilitation bridge design projects. This revision also clarifies the load rating analysis and results which shall be included in the Phase C submission. January 25, 2012 Subsection and 2.2.7 DCA2012-DM-01
Changes have been made regarding the specification and design of anchor bolts and horizontal forces. April 4, 2012 Subsection DCA2012-DM-02
Deflection design criteria updated to better reflect AASHTO intent and disconnect live load model usage from recently revised and increased design live loads. August 15, 2012 Subsection 2.2.2 DCA2012-DM-03
Increased weight of truck traffic on the Turnpike mainline and ramps has been identified as greatly exceeding current AASHTO minimum design criteria via Weigh in Motion studies. This revision increases the live load for the Turnpike mainline and ramp structures only in order to prevent under designed bridges. The design live load for the Parkway remains unchanged. August 15, 2012 Subsection 2.2.2 DCA2012-DM-04
Section 2.2.6 has been revised to clarify intent of rehabilitation design, more clearly define acceptable levels of damage encountered in a seismic event, and to revise the definitions for Essential and Critical bridges to more closely coincide with FHWA and AASHTO design manuals. November 14, 2012 Section 2.2.6 DCA2012-DM-05
Changes to the Environmental Engineering section of the Design Manual are being implemented to clarify the responsibilities of the design consultant relative to environmental investigations including that of the Licensed Site Remediation Professional. January 10, 2013 Section 12 DCA2013-DM-01
Replace Sections 6A and 6B with combined Section 6 (Signing and Stripping), including revised policies, practices and standards for both the Turnpike and Parkway. January 17, 2013 Section 06 DCA2013-DM-02
Updates to the Design Manual are necessary to incorporate a sample Stormwater Maintenance Plan and to clarify the submission requirements. March 5, 2014 Section 4 DCA2014-DM-01
This change revises submittal requirements pertaining to traffic control on local roadways that require NJDOT review and involvement in addition to local county and/or municipality resolutions establishing installation or modification of a traffic control device or establishing a traffic regulation. Traffic control is specific to local road detours exceeding 48 hours and traffic control affecting State highways. March 11, 2014 Section 1.A.5 and 1.B.6 DCA2014-DM-02
The traffic control for the both Roadways has become similar. Revisions to Section 9, 9.1, Introduction and Lane and Roadway Closures Section 9.7.1, Lane Closings. New Standard Drawings for mobile lane closings has been added as a reference. June 13, 2014 Section 9 DCA2014-DM-03
Design Manual language is to be changed to coincide with new Standard Drawings and Standard Specifications. Revisions are made to Subsections and Additional change is made to account for thermal movement of skewed and curved bridges. December 3, 2014 Section DCA2014-DM-05
Removed language in Sections 6.4.2 and of the Design Manual relating to Enhanced Integer Mile Markers on the Turnpike. January 6, 2015 Section 6.4.2 and DCA2015-DM-01
The ground mounted sign details have been updated to be in conformance with AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals. December 5, 2016 Section 2.5 DCA2016DM-01
Refer to the attached Document Change Request form for more information May 11, 2017 9.4 & 9.11 DCA2017DM-01

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Supplemental Documents

Document Version Effective Date Description Download
Standard Voltage Drop Computation Form 001 April 16, 2009 Document Issuance Standard Voltage Drop Computation Form
Approved Luminaires, Model Numbers and Photometric Requirements 001 March 10, 2010 Document Issuance NJTA Photometrics –

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