Public Infrastructure Department, Harris County, Texas


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

The March 2012 Revisions to the Standard Specifications are now available for download. There are three (3) new specifications, one hundred one (101) revised specifications, and seventeen (17) deleted specifications

Please click here to download a complete copy of the Specifications. The download is one self-extracting file approximately 15.2 MB in size, containing one hundred sixty-five (165) files. Should you wish to download just the new and revised specifications, please click here to download one self-extracting file approximately 3.5 MB in size containing 106 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.

No. Specification Section Revision No. Revision Date
102 Clearing and Grubbing 7 1 March 2012
104 Removing Old Concrete 3 1 March 2012
110 Roadway Excavation 7 1 March 2012
120 Excavation for Channels, and other Drainage Facilities 6 1 March 2012
130 Borrow 5 1 November 2008
132 Embankment 7 1 March 2012
160 Topsoil 5 1 March 2012
162 Sodding for Erosion Control and Stabilization 7 1 November 2008
164 Seeding and Erosion Control Blanket 4 1 November 2008
165 Hydro-Mulch Seeding (for Erosion Control and Stabilization) 5 1 November 2008
166 Fertilizer 2 1 March 2012
200 Stripping 7 1 March 2012
205 Subgrade 4 1 March 2012
220 Lime Stabilized Subgrade 5 1 March 2012
221 Hydrated Lime and Lime Slurry 3 1 March 2012
222 Portland Cement Stabilized Subgrade 3 1 March 2012
223 Lime-Flyash or Flyash Stabilized Subgrade 5 1 March 2012
224 Quicklime (Stabilization) 3 1 March 2012
230 Crushed Aggregate Base Course 4 1 March 2012
231 Cement Stabilized Crushed Aggregate Base Course 4 1 November 2008
250 Hot Mix Asphaltic Concrete Base Course (Black Base) 8 1 March 2012
251 Base Repair with Hot Mix Asphaltic Concrete Base Course 5 1 March 2012
252 In-Place Full Depth Cold Flexible Pavement Recycling 3 1 February 2011
309 Milling Existing Pavement 1 1 November 2008
310 Prime Coat 5 1 March 2012
320 Single Course Surface Treatment 4 1 March 2012
322 Two Course Surface Treatment 5 1 March 2012
323 Emulsified Asphalt Treatment 3 1 March 2012
324 Seal Coat 3 1 March 2012
340 Hot Mix-Hot Laid Asphaltic Concrete 11 1 March 2012
341 Hot In-Place Asphalt Recycling 3 1 March 2012
360 Concrete Pavement 15 1 March 2012
361 Full Depth Repair of Concrete Pavement 3 1 March 2012
400 Structural Excavation and Backfill 4 1 March 2012
402 Bank Sand Backfill 4 1 March 2012
403 Driving Timber Piling 3 1 March 2012
404 Driving Steel Piling 3 1 March 2012
405 Driving Concrete Piling 3 1 March 2012
407 Treated and Untreated Timber Piling 3 1 March 2012
408 Steel Sheet Piling 2 1 March 2012
409 Steel H Piling 1 1 November 2008
410 Prestressed Concrete Piling 3 1 March 2012
411 Drilled Shaft Foundations 4 1 March 2012
420 Concrete Structures 2 1 March 2012
421 Structural Concrete 8 1 March 2012
423 Prestressed Concrete Units 3 1 March 2012
424 Extending Concrete Structures 2 1 November 2008
427 Joint Sealant for Bridges 1st Issue 1 March 2012
429 Trench Safety System 1 1 November 2008
430 Construction of Underground Utilities 10 1 March 2012
431 Jacking, Boring or Tunneling Pipe 2 1 March 2012
432 Tunnel Construction 2 1 March 2012
433 Cement Stabilized Sand Bedding and Backfill Material 12 1 March 2012
434 Flowable Fill 2 1 November 2008
435 Timber Ordered Left In Trench 2 1 November 2008
436 Well Pointing 2 1 March 2012
437 Elastomeric Materials 2 1 March 2012
438 Preformed Joint Seal 2 1 March 2012
439 Polyurethane Joint Seal 1 1 November 2008
440 Reinforcing Steel 2 1 March 2012
441 Steel Structures 1 1 November 2008
442 Metals for Structures 2 1 March 2012
445 Structural Bolting 2 1 November 2008
446 Structural Welding 1 1 November 2008
447 Painting and Protective Coating 2 1 March 2012
448 Bridge Plaque 2 1 March 2012
450 Concrete and Steel Railing 4 1 March 2012
451 Removing and Replacing Damaged Railing 2 1 March 2012
452 Removing Railing 1 1 February 2010
453 Temporary Railing 1 1 November 2008
454 Deleted Deleted Deleted
455 Timber for Structures 1 1 November 2008
456 Timber Structures 2 1 March 2012
457 Timber Preservatives and Treatment 1 1 November 2008
458 Hardware for Heavy Timber Construction 1 1 November 2008
459 Timber Bents 1 1 March 2012
460 Reinforced Concrete Pipe 9 1 March 2012
461 Corrugated Metal Pipe 7 1 March 2012
462 Clay Pipe 2 1 March 2012
463 Safety End Treatment 5 1 March 2012
464 PVC Pipe 1 1 November 2008
465 Remove and Dispose of Existing Concrete or Metal Pipe 1 1 November 2008
470 Deleted Deleted Deleted
471 Precast Concrete Manholes 8 1 March 2012
472 Inlets 9 1 March 2012
473 Adjusting Manholes and Inlets 2 1 November 2008
476 Hydrostatic Testing of Pressure Lines 1 1 November 2008
477 Low Pressure Air Test-Sanitary Sewer Line 2 1 March 2012
480 Precast Reinforced Concrete box Sewers 13 1 March 2012
481 Monolithic Reinforced Concrete Box Sewers 5 1 February 2011
491 Reinforced Concrete Slope Paving 3 1 March 2012
493 Riprap 2 1 November 2008
494 Geotextiles 2 1 March 2012
495 Removing Old Structures 2 1 November 2008
500 Remove & Relocate or Dispose of Traffic Signs, Mail Boxes and Roadway Signs 2 1 November 2008
501 Tree Protection and Trimming 2 1 March 2012
510 Planing and/or Texturing Pavement 1 1 November 2008
515 Roadway Shell 1 1 November 2008
516 Installation of Flex Beam Guardrai 9 1 March 2012
520 Weighing and Measuring Equipment 1 1 November 2008
526 Membrane Curing 4 1 November 2008
530 Concrete Curb, Gutter, Curb and Gutter, Sidewalks and Driveways 5 1 March 2012
531 Colored Concrete for Sidewalks and Wheelchair Ramps 1 1 November 2008
535 Esplanades, Medians, and Directional Islands 4 1 March 2012
536 Coloring Concrete Medians and Sidewalks 1 1 November 2008
537 Wheel Stops 1 1 November 2008
540 Removing and Disposing of Existing Asphaltic Surface and Flexible Base Material 1 1 November 2008
550 Existing Fencing and Gates 1 1 November 2008
551 Clearing, Grubbing and Fencing 2 1 February 2010
554 Wood Fencing 1 1 November 2008
555 Chain Link Fencing 4 1 March 2012
556 Four Strand Barbed Wire Fence 3 1 March 2012
559 Construction Safety Fence 1st Issue 1 Febraury 2010
560 Maintenance and Cleanup of Project Site 1 1 November 2008
561 Video Recording Construction 2 1 November 2008
562 Preparing the Right-of-Way 1 1 November 2008
563 CCTV Inspection of Storm Sewer 1st Issue 1 February 2010
624 Aluminum Signs 5 1 February 2010
646 Roadside Traffic Sign Support 5 1 March 2012
648 Encapsulated Lens Reflective Sheeting for Traffic Control Signs (Hi-Intensity Grade) 1 1 November 2008
649 Wide Angle Prismatic Retroreflective Sheeting for Traffic Control signs (Diamond Grade) 3 1 March 2012
658 Delineators and Object Markers 2 1 March 2012
660 Reflectorized Pavement Markings 5 1 March 2012
661 Traffic Paint (Solvent Based) 3 1 March 2012
662 Glass Reflective Spheres for Traffic Paint 2 1 November 2008
663 Traffic Buttons and Pavement Markers 4 1 March 2012
665 Work Zone Pavement Markings 3 1 November 2008
666 Prefabricated Pavement Markings 4 1 November 2008
669 Pavement Surface Preparation for Markings 1 1 November 2008
670 Barricades 10 1 March 2012
671 Traffic Control 7 1 March 2012
672 Flagmen 7 1 February 2011
673 Constructing Detours for Maintaining Two-Way Traffic 11 1 March 2012
674 Removing Pavement Striping and Markings 2 1 November 2008
675 Traffic Paint Striping (Water Based) 2 1 November 2008
676 Traffic Paint (Water Based) 2 1 March 2012
677 Electrical Conduits for Traffic Signal Installation 3 1 March 2012
678 Zinc Coated Steel Wire Strand 2 1 March 2012
679 Insulated Jacketed Traffic Signal Cable 2 1 March 2012
680 Steel Mast Arm & Steel Strain Pole Assemblies 2 1 March 2012
681 Treated Timber Poles 2 1 March 2012
682 Deleted Deleted Deleted
683 Traffic Signal Supports - Pedestal Poles 5 1 March 2012
684 Deleted Deleted Deleted
685 Deleted Deleted Deleted
686 Road Illumination Assemblies (On Traffic Signal Poles) 6 1 March 2012
687 Flasher Assembly Installation 5 1 March 2012
688 Flasher Assemblies 4 1 March 2012
689 Twelve-Inch LED Traffic Signal Lamp Unit 1st Issue 1 March 2012
690 Traffic Signal Heads 5 1 March 2012
691 Twelve Inch Signal Head with Programmable Visibility of Signal Faces 1 1 November 2008
692 Symbolic Pedestrian Signal Head (Incandescent Type) 3 1 March 2012
693 Traffic Signal Lamps 2 1 February 2010
694 Down Light for Traffic Signal 5 1 March 2012
696 Low Profile Concrete Barrier 2 1 February 2011
698 Temporary Polyethylene
Water-Filled Barrier
1 1 November 2008
699 LED Pedestrian Traffic Signal Lamp Unit 1st Issue 1 March 2012
700 Notice of Intent 2 1 March 2012
701 Deleted Deleted Deleted
702 Deleted Deleted Deleted
703 Deleted Deleted Deleted
704 Deleted Deleted Deleted
705 Deleted Deleted Deleted
706 Deleted Deleted Deleted
708 Deleted Deleted Deleted
709 Deleted Deleted Deleted
711 Deleted Deleted Deleted
713 Reinforced Filter Fabric Barrier 2 1 March 2012
714 Deleted Deleted Deleted
715 Deleted Deleted Deleted
716 Deleted Deleted Deleted
717 Deleted Deleted Deleted
719 Inlet Protection Barriers 2 1 March 2012
722 Deleted Deleted Deleted
723 Deleted Deleted Deleted
724 Stabilized Construction Access (Type I - Rock) 3 1 March 2012
725 General Source Controls 3 1 March 2012
727 Deleted Deleted Deleted
730 Concrete Truck Washout Structures 1 1 March 2012
741 Inlet Protection Barrier (for Stage II Inlets, Gravel Bags) 4 1 March 2012
750 Rock Filter Dams 3 1 March 2012
751 SWPPP Inspection and Maintenance 1 1 March 2012
1000 Traffic Signal Installation and Modification 1 1 March 2012
1210 Intelligent Transportation System (ITS) Controller Cabinet Assembly 1st Issue 1 February 2011
2070 Advanced Transportation Controller 1st Issue 1  February 2011
       
       


Revised:  3/1/12

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