Public Infrastructure Department, Harris County, Texas


Standard Engineering Design Specifications for Construction and Maintenance of Roads and Bridges

The May 2014 Revisions to the Standard Specifications are now available for download. There are sixty-five (65) revised specifications, and three (3) deleted specifications

Please click here to download a complete copy of the Specifications. The download is one self-extracting file approximately 18.2 MB in size, containing one hundred sixty-one (161) files. Should you wish to download just the new and revised specifications, please click here to download one self-extracting file approximately 2.2 MB in size containing 65 files

Below is an index of all the specifications that can be viewed and/or downloaded individually.  To view, simply click the specification number.  To save to your computer, right click the specification number and select "Save Target As.." 

The files are in the Adobe .pdf format. If you do not already have this reader, it is available free for download at Adobe's web site. Please note that in the instance that a dispute should arise over the interpretation of a specification the County Engineer's determination shall be considered final.

Item No. Specification Section Revision No. Revision Date
102 Clearing and Grubbing 71 March 2012
104 Removing Old Concrete 41 May 2014
110 Roadway Excavation 71 March 2012
120 Excavation for Channels and Other Drainage Facilities 71 May 2014
130 Borrow 51 November 2008
132 Embankment 71 March 2012
160 Topsoil 51 March 2012
162 Sodding for Erosion Control and Stabilization 71 March 2012
164 Seeding and Erosion Control Blanket 41 November 2008
165 Hydro-Mulch Seeding (for Erosion Control and Stabilization) 51 November 2008
166 Fertilizer 21 November 2008
200 Stripping 71 March 2012
205 Subgrade 41 March 2012
220 Lime Stabilized Subgrade 51 March 2012
221 Hydrated Lime and Lime Slurry 31 March 2012
222 Portland Cement Stabilized Subgrade 31 March 2012
223 Lime-Fly Ash or Fly Ash Stabilized Subgrade 51 March 2012
224 Quicklime (Stabilization) 31 March 2012
230 Crushed Aggregate Base Course 41 March 2012
231 Cement Stabilized Crushed Aggregate Base Course 51 May 2014
250 Hot Mix Asphaltic Concrete Base Course (Black Base) 91 May 2014
251 Base Repair with Hot Mix Asphaltic Concrete Base Course 51 March 2012
252 In-Place Full Depth Cold Flexible Pavement Recycling 41 May 2014
309 Milling Existing Pavement 11 November 2008
310 Prime Coat/Sealer 51 March 2012
320 Single Course Surface Treatment 41 March 2012
322 Two Course Surface Treatment 51 March 2012
323 Emulsified Asphalt Treatment 31 March 2012
324 Seal Coat 31 March 2012
340 Hot Mix-Hot Laid Asphaltic Concrete 121 May 2014
341 Hot In-Place Asphalt Recycling 31 March 2012
360 Concrete Pavement 161 May 2014
361 Full Depth Repair of Concrete Pavement 41 May 2014
400 Structural Excavation and Backfill 41 March 2012
402 Bank Sand Backfill 41 March 2012
403 Driving Timber Piling 31 March 2012
404 Driving Steel Piling 31 March 2012
405 Driving Concrete Piling 31 March 2012
407 Treated and Untreated Timber Piling 31 March 2012
408 Steel Sheet Piling 21 March 2012
409 Steel H Piling 11 November 2008
410 Prestressed Concrete Piling 31 March 2012
411 Drilled Shaft Foundations 41 March 2012
420 Concrete Structures 31 May 2014
421 Structural Concrete 91 May 2014
423 Prestressed Concrete Units 31 March 2012
424 Extending Concrete Structures 21 November 2008
427 Joint Sealant for Bridges 1st Issue1 March 2012
429 Trench Safety System 11 November 2008
430 Construction of Underground Utilities 111 May 2014
431 Jacking, Boring or Tunneling Pipe 21 March 2012
432 Tunnel Construction 21 March 2012
433 Cement Stabilized Sand Bedding and Backfill Material 121 March 2012
434 Flowable Fill 21 November 2008
435 Timber Ordered Left In Trench 21 November 2008
436 Well Pointing 21 March 2012
437 Elastomeric Materials 31 May 2014
438 Preformed Joint Seal 21 March 2012
439 Polyurethane Joint Seal 21 May 2014
440 Reinforcing Steel 31 May 2014
441 Steel Structures 11 November 2008
442 Metals for Structures 31 May 2014
445 Structural Bolting 21 November 2008
446 Structural Welding 21 May 2014
447 Painting and Protective Coating 21 March 2012
448 Bridge Plaque 31 May 2014
450 Concrete and Steel Railing 41 March 2012
451 Removing and Replacing Damaged Railing 21 March 2012
452 Removing Railing 11 February 2010
453 Temporary Railing 21 May 2014
455 Timber for Structures 11 November 2008
456 Timber Structures 31 May 2014
457 Timber Preservatives and Treatment 21 May 2014
458 Hardware for Heavy Timber Construction 21 May 2014
459 Timber Bents 11 March 2012
460 Reinforced Concrete Pipe 91 March 2012
461 Corrugated Metal Pipe 71 March 2012
462 Clay Pipe 21 March 2012
463 Safety End Treatment 61 May 2014
464 PVC Pipe 11 November 2008
465 Remove and Dispose of Existing Concrete or Metal Pipe 21 May 2014
471 Precast Concrete Manholes and Junction Boxes 91 May 2014
472 Inlets 101 May 2014
473 Adjusting Manholes and Inlets 21 November 2008
476 Hydrostatic Testing of Pressure Lines 11 November 2008
477 Low Pressure Air Test - Sanitary Sewer Line 31 May 2014
480 Precast Reinforced Concrete Box Sewers 141 May 2014
481 Monolithic Reinforced Concrete Box Sewers 61 May 2014
491 Reinforced Concrete Slope Paving 41 May 2014
493 Riprap 21 November 2008
494 Geotextiles 21 March 2012
495 Removing Old Structures 21 November 2008
500 Remove and Relocate or Dispose of Traffic Signs, Mail Boxes and Roadway Signs 31 May 2014
501 Tree Protection and Trimming 31 May 2014
510 Planing and/or Texturing Pavement 21 May 2014
515 DELETED Roadway Shell DELETEDDELETED
516 Installation of Flex Beam Guardrail 101 May 2014
520 Weighing and Measuring Equipment 21 May 2014
526 Membrane Curing 51 May 2014
530 Concrete Curb and/or Gutter, Sidewalks and Driveways 61 May 2014
531 Coloring Concrete for ADA Ramps 21 May 2014
535 Medians and Directional Islands 51 May 2014
536 Coloring Concrete for Median Noses 21 May 2014
537 Wheel Stops 21 May 2014
540 Removing and Disposing of Existing Asphaltic Surface and Base Material 21 May 2014
550 Existing Fencing and Gates 21 May 2014
551 DELETED Clearing, Grubbing and Fencing DELETEDDELETED
554 Wood Fencing 21 May 2014
555 Chain Link Fencing 51 May 2014
556 Four Strand Barbed Wire Fence 41 May 2014
559 Construction Safety Fence 11 May 2014
560 Maintenance and Cleanup of the Project Site 21 May 2014
561 Video Recording Construction 21 November 2008
562 Preparing the Right-of-Way 11 November 2008
563 CCTV Inspection of As-Built Storm Sewer Systems 11 May 2014
624 Aluminum Signs 61 May 2014
646 Roadside Traffic Sign Support 61 May 2014
648 DELETED Encapsulated Lens Reflective Sheeting for Traffic Control Signs (Hi-Intensity Grade) DELETEDDELETED
649 Wide Angle Prismatic Retroreflective Sheeting for Traffic Control Signs (Diamond Grade) 41 May 2014
658 Delineators and Object Markers 21 March 2012
660 Reflectorized Pavement Markings 51 March 2012
661 Traffic Paint (Solvent Based) 31 March 2012
662 Glass Reflective Spheres for Traffic Paint 31 May 2014
663 Traffic Buttons and Pavement Markers 41 March 2012
665 Work Zone Pavement Markings 31 November 2008
666 Prefabricated Pavement Markings 41 November 2008
669 Pavement Surface Preparation for Markings 11 November 2008
670 Barricades 101 March 2012
671 Traffic Control 81 May 2014
672 Flagmen 71 February 2011
673 Constructing Detours for Maintaining Two-Way Traffic 12 1 May 2014
674 Removing Pavement Striping and Markings 21 November 2008
675 Traffic Paint Striping (Water Based) 21 November 2008
676 Traffic Paint (Water Based) 21 March 2012
677 Electrical Conduits for Traffic Signal Installation 31 March 2012
678 Zinc Coated Steel Wire Strand 21 March 2012
679 Insulated Jacketed Traffic Signal Cable 21 March 2012
680 Steel Mast Arm & Steel Strain Pole Assemblies 31 May 2014
681 Treated Timber Poles 3 1 May 2014
683 Traffic Signal Supports – Pedestal Poles 6 1 May 2014
686 Road Illumination Assemblies (On Traffic Signal Poles) 61 March 2012
687 Flasher Assembly Installation 51 March 2012
688 Flasher Assemblies 41 March 2012
689 Twelve Inch LED Traffic Signal Lamp Unit 1 1 May 2014
690 Traffic Signal Heads 51 March 2012
691 Twelve Inch Signal Head with Programmable Visibility of Signal Faces 11 November 2008
692 Symbolic Pedestrian Signal Head (Incandescent Type) 31 March 2012
693 Traffic Signal Lamps 3 1 May 2014
694 Sign Lights for Traffic Signals 51 March 2012
696 Low Profile Concrete Barrier 21 February 2011
698 Temporary Polyethylene Water-Filled Barrier 11 November 2008
699 LED Pedestrian Traffic Signal Lamp Unit 1st Issue1 March 2012
700 Notice of Intent 31 May 2014
713 Reinforced Filter Fabric Barrier 21 March 2012
719 Inlet Protection Barriers 21 March 2012
724 Stabilized Construction Access 41 May 2014
725 General Source Controls (SWPPP) 41 May 2014
730 Concrete Truck Washout Structures 21 May 2014
741 Inlet Protection Barrier (for Stage II Inlets, Gravel Bags) 51 May 2014
750 Rock Filter Dams 41 May 2014
751 SWPPP Inspection and Maintenance 11 March 2012
1000 Traffic Signal Installation and Modification 11 March 2012
1210 Intelligent Transportation System (ITS) Controller Cabinet Assembly 1st Issue1 February 2011
2070 Advanced Transportation Controller 1st Issue1 February 2011
       
       


Revised:  5/1/14

If you have a question related to the specifications contact: Patrick Garrett.