Pavement Widening- Func 245. Quarter Point Levelling - Func 245 PAVEMENT STRENGTHENING OPERATIONS. Pavement Strengthening Operations District Forces

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1 Pavement Strengthening Operations District Forces Pavement Widening- Func 245 PAVEMENT STRENGTHENING OPERATIONS In-House Forces Lubbock District Method Cut out edge approx. 8 deep and wide enough for a minimum 26 roadway Clean out/densify and tack Place flex base or RAP in lifts and compact Strip seal to surface and preserve joint May overlay to level up prior to full width seal Equipment & Labor Rollers, Maintainer, Dump trucks, Distributor 8-10 employees Production & Results An average of 43,100 SY per section in FY 2013 Works well in all areas of the district Energy Sector Workshop / LBB District / 2014 Energy Sector Workshop / LBB District / 2014 Pavement Strengthening Operations District Forces Quarter Point Levelling Quarter Point Levelling - Func 245 Method Repair failures in level up area Tack and place mix Compact Follow with full width fog seal or seal coat Equipment & Labor Rollers, Maintainer, Dump trucks, Distributor, Specialized Equipment for lying mix 8-10 employees Production & Results Works well in all areas of the district Energy Sector Workshop / LBB District / 2014 Energy Sector Workshop / LBB District / Quarter Point Levelling Quarter Point Levelling Energy Sector Workshop / LBB District / Energy Sector Workshop / LBB District /

2 Quarter Point Levelling Quarter Point Levelling Energy Sector Workshop / LBB District / Energy Sector Workshop / LBB District / Quarter Point Levelling Energy Sector Workshop / LBB District /

3 Routine Maintenance Operations District Forces Routine Maintenance Functions ROUTINE MAINTENANCE OPERATIONS Lubbock DISTRICT Edge Repair 270 Edge Backfill 455 Strip/Spot Seal 232 Patching 110 & 120 Fog Seal 233 Raw Edge Seal 233 Pothole Repair 241 Squeegee/Slurry/Scrub/Sand Seal Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces Edge Repairs - Func 270 Method Prepare location for repair, tack if necessary Place asphaltic material by hand, maintainer or specialized equipment Roll by truck or powered roller Hot mix/cold lay, Proline, Uvalde, homemade mix Equipment & Labor Roller, Maintainer, cross-conveyor on dump truck, Distributor, 6-8 employees Production & Results An average of 122,000 LF per section in FY 2013 Works well in all parts of the district Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces Edge Backfill (pulling edges) - Func 455 Method Blade soil back against pavement edge to eliminate drop offs and provide lateral support Roll by truck or powered roller if needed Equipment & Labor Maintainer, roller or dump truck 2-3 employees Production & Results An average of 347,000 LF per section in FY 2013 Works well in all parts of the district 1

4 Routine Maintenance Operations District Forces Strip/Spot Seal- Func 232 Method Prepare location for repair, place patch if necessary Place asphalt over distressed area, cover with aggregate Roll by truck or powered roller Various asphalts and various aggregates Equipment & Labor Distributor, dump truck with tailgate aggregate spreader, roller, power broom 5-6 employees Production & Results An average of 26,500 SY per section in FY 2013 Works well in all parts of the district Routine Maintenance Operations District Forces Base Repairs - Func 110 & 120 Method Either removal and replacement of distressed material (110), or repair in place of distressed areas (120) Caliche base, stabilizing material (cement/lime), hot mix/cold lay or hot mix, various asphalts, various aggregates Equipment & Labor Backhoe/loader, rollers, maintainer, dump truck, Distributor 6-8 employees Production & Results An average of 1,800 CY per section in FY 2013 for Func 110 An average of 1,500 CY per section in FY 2013 for Func 120 Works well in all parts of the district Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces Fog Seal - Func 233 Method Apply asphalt on roadway surface Various emulsified asphalts and dilutions Equipment & Labor Distributor, power broom 4-5 employees Production & Results An average of 389,500 SY per section in FY 2013 Works well in all parts of the district Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces 2

5 Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces Raw Edge Seal - Func 233 Method Place asphalt along the outer edge of the roadway, 18 to 24 in width Various asphalts and dilutions Equipment & Labor Distributor, power broom 4-5 employees Production & Results An average of 389,500 SY per section in FY 2013 Works well in all parts of the district Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces Pothole Repairs - Func 241 Method Prepare location for repair, ensure vertical sides in repair area Tack repair area, compact material Hot mix/cold lay, hotmix, Proline, Uvalde, homemade mix Equipment & Labor rollers, dump truck 2-3 employees Production & Results An average of 1,100 EA per section in FY 2013 Works well in all parts of the district Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces Squeegee/Slurry/Scrub/Sand Seal Func 231, 232 or 233 Method Prepare location for repair, ensure vertical sides in repair area Tack repair area, compact material Hot mix/cold lay, hotmix, Proline, Uvalde, homemade mix Equipment & Labor rollers, dump truck 2-3 employees Production & Results An average of 1,100 EA per section in FY 2013 Works well in all parts of the district 3

6 Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces Routine Maintenance Operations District Forces 4

7 MAINTENANCE & CONSTRUCTION CONTRACT PRACTICES Ron Baker, P.E. Lubbock District Energy Sector Workshop Energy Sector Workshop 2 Texas Oil and Gas Drilling Activities Expected Gas and Oil Well Site Oil and Gas Gas Oil Gas and Oil Field Eagle Ford Shale Permian Basin Granite Wash Barnett Shale Haynesville Shale County Ü Scale Miles Energy Sector Workshop 3 Date: 6/13/2012 Energy Sector Workshop 4 ACTIVE OIL AND GAS WELLS IN PERMIAN BASIN Energy Sector Workshop 5 Energy Sector Workshop 6 1

8 Lubbock District FY 14 Energy Sector Projects CURRENT ENERGY SECTOR JOBS IN THE LUBBOCK DISTRICT A. FM Parmer Co FM2397 to SH86 B. FM0145 Castro Co FM1055 to US385 C. FM1585 Hockley Co FM303 to US385 D. FM0378 Crosby Co FM40 to end of State maintenance Energy Sector Workshop 7 Energy Sector Workshop 8 FM 378 Crosby County FM 378 TYPICAL SECTIONS (first sheet) Existing 22.5 ft flex base and asphalt 9 inch caliche base Project cost = $2,664,168 Cost / SY = $ ADT = 570 Begin work Widen to 30 ft 2 course surface treatment 6 ft subgrade widening on each side 6 inch cement treat existing base (31 ft) 4 inch new flex base (30 ft) Two 12 ft lanes and 3 ft shoulders Energy Sector Workshop 9 Energy Sector Workshop 10 FM 378 Crosby County FM 378 TYPICAL SECTIONS (second sheet) 18 FT EXISTING BASE AND ASPHALT 5 INCH OF CALICHE BASE Widen to 30 ft two course surface treatment 8 ft subgrade widening on each side 5 inch cement treated new and existing base (31 ft) 5 inch new flex base (31 ft) Two 12 ft lanes and 3 ft shoulders View to south past end of State maintenance View to north subgrade Widening on both sides Energy Sector Workshop 11 Energy Sector Workshop 12 2

9 FM 378 Crosby County FM 378 Energy Sector Workshop 13 Energy Sector Workshop 14 FM 1585 Existing Pavement Project Cost = $3,762,234 Cost /SY = $ ADT = 680 Begin work Energy Sector Workshop 15 Energy Sector Workshop 16 FM 1585 Existing pavement FM 1585 Existing pavement Energy Sector Workshop 17 Energy Sector Workshop 18 3

10 Reworking existing pavement on FM 1585 FM 1585 TYPICAL SECTIONS Existing 6 to 7 inches caliche base 22 to 25 ft width Widen to 30 ft of 2 course surface treatment Widen 6 ft subgrade on each side 4.5 inches of cement treated existing base (31 ft) 6 inch new flex base ( 30 ft ) Two 12 ft lanes with 3 ft shoulders Energy Sector Workshop 19 Energy Sector Workshop 20 Reworking pavement on FM 1585 Water trucks in front of Bomag machines Energy Sector Workshop 21 Energy Sector Workshop 22 FM 1172 Parmer County FM 1172 Existing pavement Project cost $3,262,223 Cost/SY = Current ADT =200 Begin work Energy Sector Workshop 23 Energy Sector Workshop 24 4

11 FM 1172 Removing salvage base prior to lime treating FM 1172 TYPICAL SECTIONS first sheet LAKEFILL SECTIONS EXISTING 20 FT ASPHALT SURFACE 7 TO 24 INCH CALICHE BASE IN PLACE WIDEN FROM 20 FT TO 26 FT 2 COURSE LIME TREAT 24 INCH SUBGRADE 4.5 INCH CEMENT TREAT EXISTING BASE 4.5 INCH NEW FLEX BASE 11 FT LANES WITH 2 FT SHOULDERS Energy Sector Workshop 25 Energy Sector Workshop 26 FM 1172 lime treating bottom 12 inches subgrade in lake fill FM 1172 TYPICAL SECTIONS second sheet EXISTING 20 FT PAVEMENT 7 INCH CALICHE BASE FM 1172 (NON LAKEFILL) WIDEN FROM 20 FT TO 26 FT 2 COURSE SURFACE 6 FT SUGRADE WIDENING ON EACH LANE 4.5 IN CEMENT TREATED BASE (29 FT) 4.5 INCH NEW FLEX BASE (28 FT) 11 FT LANES WITH 2 FT SHOULDERS Energy Sector Workshop 27 Energy Sector Workshop 28 Project cost = $1,987,950 Cost / SY = ADT = ADT = 700 BEGIN WORK Existing pavement on FM 145 Feed lot in distance Energy Sector Workshop 29 Energy Sector Workshop 30 5

12 FM 145 TYPICAL SECTIONS sheet 1 20 to 34 ft wide 6 inch existing base Transitions on both ends of job FM 145 TYPICAL SECTIONS sheet 2 Existing 20 ft surface 6 inches existing base Transitions from 28 ft to 34 ft pavement 2 course surface treatment 6 inch salvage base ( variable width) 6 inch new base Variable width lanes with 3 ft shoulders Widen to 28 ft 2 course surface treatment Widen subgrade 4 ft on each side 4 inch salvage base (28 ft ) 6 inch new base ( 28 ft ) Energy Sector Workshop 31 Energy Sector Workshop 32 Widening subgrade on QUESTIONS? FOR ADDITIONAL INFORMATION PLEASE CONTACT: Ron Baker P.E. Lubbock District (806) Ron.Baker@txdot.gov Energy Sector Workshop 33 Energy Sector Workshop 6

13 MNT Participation MANAGING IMPACTS Document performance data Monitor corridor performance Provide design and evaluation support Coordinate information between districts Sustainability and innovation in design Evaluate performance of maintenance alternatives Distribute information and solicit feedback Provide recommendations on maintenance activities Footer Text Lubbock Workshop Apr 17, 2014 Managing Impacts Schematic Driveway Analysis 1

14 Depth Stiffness Width LOAD EFFECTS Footer Text Lubbock Workshop Apr 17, 2014 Load Effects Surface Existing Base Subgrade Add depth Stabilization 1

15 Data Collection Initiatives Traffic Data Related to Energy Developments Texas Railroad Commission TxDOT Traffic counts WIM data DPS TxDMV Industry interviews 1 2 Energy Layers (Non Renewable) RAILROAD COMMISSION DATA Oil/gas well location data Oil/gas well drilling permit master data Oil/gas production data Underground injection control data Pipeline data 3 4 Completed Wells by Year Completed Wells by Year /

16 Pending RRC Data Issues 11 Oil/gas production Oracle data dump Oil and gas master files Drilling permit master files Underground injection control file 12 2

17 TRAFFIC COUNT DATA ,550 FM 624 (1,550) 1,550 1,

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19 Growth Rate Year of RHiNO Data Year of Count Data ADT (Absolute Differences) Avg. Truck ADT (Absolute Differences) Min. Max. Avg. Min. Max % 1% 99% 89% 4% 608% % 0% 156% % 0% 144% % 6% 662% % 3% 782% TXDOT WIM DATA Overview of TPP WIM Data Potential Analyses 3 years of data ( ) Some data for WIM or WIM/Piezo stations in Texas Each station: ~1 million records/year Total weight by station Mean of daily 10 highest values Heavy load trends Axle weights by station Conversion of axle weights to single, tandem, and tridem axle weights using axle spacing Conversion to 18kip ESALs 18kip ESAL analysis and distribution charts

20 Overweight Load Trends Year No. Trucks No. Trucks Over 80 kip % 2011: 86,100 trucks (80 84 kips) 2012: 41,680 trucks (80 84 kips) M 100, % M 115, % M 50, % Overweight Load Trends Year No. Trucks No. Trucks Over 80 kip % ,569 20, % ,323 26, % ,506 28, % : 20,150 trucks (80 84 kips) 2012: 21,518 trucks (80 84 kips)

21 Overweight Load Trends Year No. Trucks No. Trucks Over 80 kip % 2010: 5,583 trucks (80 84 kips) 2012: 10,987 trucks (80 84 kips) ,643 12, % ,023 17, % DPS INSPECTION DATA DPS Commercial Vehicle Inspection Data Inspection data: 01/ /2013 Data files: Inspection event data (e.g., location and time) Violation description Vehicle data (e.g., axle configuration) Weight data (e.g., gross and axle group weight) Hazmat data DPS Commercial Vehicle Inspection Data Inspections are not random Truck volume data not collected Only a portion can be mapped: About 40% with Lat Long coordinates Another 25% with route name and milepost Interstate highways: Milepost data match Other highways: Milepost data do not match

22 Gross Weight Overweight Amount Axle 1 Axle Group 2 Axle Group 3 Axle Group X OO OOOOO X OO OO O X OO OOOO X OO OO X OO OOO X OO OOO X OO OO X OO OO X OO OO X OO OO Total Inspections 926 Inspections with Weight Violations Weight Violations in Eagle Ford Region County Total Inspections Weight Violations Percent Live Oak 1, % McMullen % Goliad % Bee % La Salle % Dimmit 1, % Zavala % Webb 4, % Karnes % Jim Wells % Duval % Frio 1, % Gonzales 1, % Maverick 2, % Atascosa 1, % Fayette % De Witt Energy Developments 671 and the 13 2% 44 Wilson % Inspections with Weight Violations Inspections with Weight Violations Permit Types TXDMV OS/OW PERMIT DATA Annual Permits Single Trip Permits Description Crane Well Servicing Unit Rig Up Truck / Unladen Lift Fracking Trailer Ready Mixed Concrete Truck General Super Heavy 30 day/60 day/90 day Width/Length Over Axle (1547) Crane (S/P Mileage) Well Servicing Unit (S/P mileage)

23 OS/OW Permits Aug 2011 Jan 2014 Permit Type No. of Permits Percentage Annual Permits 138,843 8% Single Trip Permits 1,494,727 80% Other Permits 230,666 12% Total 1,864, % OS/OW Permits FY 2013 Industry Type No. of Permits All Industry Types 519,206 Oil and Gas Industry Related 224,500 % Permits Related to Oil & Gas Industry 43% Oil & Gas Industry Permits No. Permits No. Trips Annual permits 16,720 4,180,031 Single trip permits 180, ,002 Other permits 27,778 27,778 Total 224,500 4,387, Pending OS/OW Data Issues Thank You! Annual permit data did not contain effective or expiration dates Information on number of axles is missing Some TxPROS routes have O D pairs connected by straight lines

24 Vehicle Class Vehicle Count Total Weight (lbs) 4 2,143 44,388, , ,096, , ,357, , , ,524, ,856 9,487,726, , ,412,349 Total 207,241 10,198,025,

25 61 62 Inspections with Weight Violations Annual Permit Single Trip Permit

26 Major OS/OW O D Pairs in Texas (FY09) Total Number of OS/OW Permits Total Number of OS Permits Total Weight of OW Loads Relative Pavement Impact Total Weight Weight Weight EALF Ratio (lb) Ratio Ratio EALF Ratio Weight Ratio EALF Ratio WRT 4,000 lb WRT 35,000 lb WRT 80,000 lb 4, , , , , , , , , , ,

27 Pavement Evaluation Tools and Thickness Design Methods Current Projects Evaluation Tools Lessons Learned Pavement Design Recommendations Opportunities/Challenges Repair of Oil/Gas Road Damage Task 4 IAC Year 1 of 3 Provide Support for Maintenance Division on Specific projects Yoakum (SH 97 US 87) Corpus Christi (SH 72) Laredo (FM 468) Perform Pavement Evaluation, take Core/Auger samples Meet with District/Division to present pavement thickness, strength data and identify defects Provide lab testing support if needed Run FPS 21 to develop design options Present results in Tech Memos Pavement Evaluation Tools GPR FWD DCP GPR Layer thickness Change in type of base Subsurface Defects Falling Weight Deflectometer Strength profile along section Inputs for Design program TTI s Field Sampling Equipment 1

28 SH 72 From SH 239 to FM 792 SH 72 Thin HMA Sections 3.5 in. HMA 10.5 in lime treated base Low quality little rock Very sandy Subgrade (variable) Note deterioration of Treated Base Conclusions From SH 72 Cause of Problem The top of the treated base has deteriorated under loads Maintenance has already replaced top 4 inches of base at east end of project 9 inch thick patches are also failing Roadway does not have a solid foundation layer. Lower base and subgrade very variable Calculation of Design Traffic 20 Year ESAL s 1) Based on on line planning traffic maps 3200 *0.5 *.157 = 251 trucks/day * 365 *1.67(ESAL/Truck) = 153,118 ESAL s per year 153,118 * 20 4% growth = 4.5 million ESAL s for 20 years 2) District Measured 5600 ADT and 40% trucks yield 10 million ESAL s for 20 years Design Option 1 Lessons Learned in Full Rehabs 1. Importance of a Foundation Layer Mill top 6 inches Add 4 inches of Base Stabilize top 8 inches with cement IH 10 Odessa District TRM 305 to 326 2CST 12 Inches Flexible base Excellent Subgrade 35 years old FM 133 Laredo District TRM 440 to CST 10 inches Flexible base Sandy/Gravel Subgrade 14 years old 2

29 FWD Subgrade modulus 18 KSI sand 7 ksi clay Bryan H Photos 6 week old Widening Full depth Grade dumping Type D from PG 70 to PG 64 US 97 Laredo 4 Year Old FDR Cement treated Lesson 2 a) Do not cut corners in Pavement design b) Use FWD to identify weak spots C) Thin stiff dense graded mixes directly over areas of high deflection (flex base) not a good idea under these loads EB Pre construction FWD Station W1 W7 Base Subgrade mils mils ksi ksi A B Segment A TRM Edge of the full depth asphalt shoulder Lesson 3 Widening with Full Depth Asphalt may not be a good idea in all cases 3

30 Developing Pavement Designs for Full Rehabs using FPS 21 + Triaxial Check Can we afford to do it? Can we afford not to do it? Thickness designs Up front evaluations Reliability levels Traffic Levels 18 kip ESAL ATHWLD s Design Moduli values Mechanistic Design Check Reliability Levels in TxDOT Pavement Design manual Traffic levels 18 kip ESAL Old Current Needed for Energy Development < 1 million B A C 1 5 million C B C > 5 million C C C Estimating Design Traffic 20 year Truck loads (18 Kip ESALs) TPD numbers historically low Use of planning map * factor of safety (2) TPD + 100K per well Average of the 10 heaviest Wheel loads At < 1 million Base thickness 4, 6 and 8 inches for A, B and C Reliability levels Average of the 10 Heaviest Trucks (Legal is 80,000 lbs) (Cesar Q and Edgar TTI) WIM Station District Highway (lbs) 2012 (lbs) 531 Laredo IH , , Corpus IH , , Corpus US , , Odessa IH , ,622 4

31 Average of the 10 Heaviest Wheel Loads (input to FPS 21) WIM Station District Highway Laredo IH kips 13.6 kips 535 Corpus IH kips 12.5 kips 538 Corpus US kips 14.8 kips 533 Odessa IH kips 17.8 kips Opportunities Document what is working and what is not What are other states/countries doing North Dakota Canada Stabilizer Selection Cement works well for foundation layer Consider Asphalt for base Emulsion Foamed Asphalt This design is working! What are other agencies doing Foamed Asphalt Applications Alaska mining operation Running on base Nothing to 4% Cement or 8% lime Geogrids to minimize edge cracking Give credit for excellent support E > 100ksi Must be sealed Thin crack resistant HMA or Multiple seals North Dakota DOT 18 Inch deep one pass Asphalt stabilization Chip seal final surface FDR options with Asphalt Asphalt Emulsion used in panhandle and worked well Foamed Asphalt not tried by TxDOT but has construction advantages excellent lab results in terms of strength gain and moisture susceptibility CR 424 Williamson County July 2013 Foam Emulsion 5

32 County Road 424 Williamson County Direct comparison of Emulsion to Foam Control section Modulus 40 ksi Foam/Lime Section 350 ksi Foamed asphalt injected directly into mixing chamber to ensure a uniform dispersion of binder into the base Emulsion Section 150 ksi Emulsion Pre sprayed onto pavement surface and mixed from top down Conclusions Need better traffic data (weighing trucks) Designs that have worked well in the past may need to be rethought If you do not have a good foundation layer build one Use the tools available to engineer these projects Send Requests for assistance to Maintenance Division SH 85 Thin HMA over Flexible base SH 85 Design Challenge Weak thin structure Existing base Materials marginal Flood plain restrictions cannot increase height Need to open to traffic at night 6

33 Pavement Design Traffic Values Used for Energy Sector Projects Traffic Estimates District County CSJ Hwy SAT Atascosa FM 140 SAT Atascosa FM 791 SAT Atascosa FM 791 SAT McMullen SH 16 SAT McMullen SH 16 LRD La Salle FM 133 LRD Dimmit FM 190 LRD La Salle XXX FM 469 LRD Zavala FM 117 LRD Zavala b FM 117 LRD La Salle FM 624 Design Design 20 yr 18 KESAL ATHWLD 5,300,000 17,000 * 6,268,000 14,000 * 4,326,000 14,000 * 4,928,000 11,500 3,731,000 11,200 6,248,000 12,000 * 1,200,000 11,400 3,213,000 11, ,000 11,000 2,657,000 11,000 3,099,000 11,200 Average Median 3,783,818 12,318 3,731,000 11,400 Revised Traffic Values for Four Energy Sector Projects Triaxial Class versus Total Pavement Thickness Original 20yrOriginal Revised 20yrRevised District County CSJ Hwy 18 KESAL ATHWLD 18 KESAL ATHWLD SAT Atascosa FM ,000 10,000 5,300,000 17,000 SAT Atascosa FM 791 2,151,000 10,900 6,268,000 14,000 SAT Atascosa FM 791 1,816,000 10,900 4,326,000 14,000 LRD La Salle FM 133 2,120,000 11,100 6,248,000 12,000 Triaxial Class versus Total Pavement Thickness Triaxial Class versus Total Pavement Thickness C=100 Surface Treatment C=300 HMA 2" to 4" Triaxial ATHWLD, lbs Triaxial ATHWLD, lbs Class Class

34 TxDOT Statewide Impact of Oil & Gas Development on Texas Highways TxDOT s Maintenance Division (Jenny Li and Magdy Mikhail) developed a worksheet to estimate pavement design traffic value increases Estimated 27,456 18KESALs per well over a 20 year design period based on Barnett Shale activity (pipelines). Estimated 114,204 18KESALs per well over a 20 year design period based on Eagle Ford activity (no pipelines). SAT used the worksheet to revise the pavement design traffic values for their Energy Sector projects. TxDOT Estimate based on Barnett Shale Activity 18-k ESAL Number of Trucks Year - Type of Work (per Wellsite) (per Wellsite) Year 1 - Drilling Wellsite Year 1 - Fracturing 2, Year 1 - Production Year 2 - Production Year 3 - Production Year 4 - Production Year 5 - Production Year 6 - Fracturing 2, Year 6 - Production Year 7 - Production Year 8 - Production Year 9 - Production Year 10 - Production Year 11 - Fracturing 2, Year 11 - Production Year 12 - Production Year 13 - Production Year 14 - Production Year 15 - Production Year 16 - Fracturing 2, Year 16 - Production Year 17 - Production Year 18 - Production Year 19 - Production Year 20 - Production Year Total, Per Wellsite 27, ,185 TxDOT Estimate based on Eagle Ford Shale Activity (no pipelines) 18-k ESAL Number of Trucks Year - Type of Work (per Wellsite) (per Wellsite) Year 1 - Construction Wellsite Year 1 - Drilling Wellsite Year 1 - Fracturing 1, Year 1 - Production 5, Year 2 - Production 5, Year 3 - Production 5, Year 4 - Production 5, Year 5 - Production 5, Year 6 - Fracturing 1, Year 6 - Production 5, Year 7 - Production 5, Year 8 - Production 5, Year 9 - Production 5, Year 10 - Production 5, Year 11 - Fracturing 1, Year 11 - Production 5, Year 12 - Production 5, Year 13 - Production 5, Year 14 - Production 5, Year 15 - Production 5, Year 16 - Fracturing 1, Year 16 - Production 5, Year 17 - Production 5, Year 18 - Production 5, Year 19 - Production 5, Year 20 - Production 5, Year Total, Per Wellsite 114, ,598 Est. Number Est. Number New Wells New Wells County District County District Est. Number Est. Number New Wells New Wells County District County District Based On Regular Producing Wells MARTIN 941 ODA MITCHELL 99 ABL ANDREWS 857 ODA CRANE 92 ODA GLASSCOCK 832 SJT THROCKMOR 91 WFS MIDLAND 802 ODA COOKE 75 WFS UPTON 779 ODA LIPSCOMB 75 AMA DIMMIT 677 LRD LOVING 74 ODA LA SALLE 623 LRD MEDINA 68 SAT KARNES 615 CRP HEMPHILL 67 AMA ECTOR 543 ODA FRIO 62 SAT MILAM 504 BRY DAWSON 59 LBB REAGAN 472 SJT EDWARDS 59 SJT MC MULLEN 402 SAT WILBARGER 57 WFS IRION 380 SJT ZAVALA 57 LRD GONZALES 357 YKM COLEMAN 53 BWD WEBB 354 LRD JOHNSON 52 FTW DEWITT 335 YKM PARKER 49 FTW WARD 299 ODA WINKLER 48 ODA HOWARD 291 ABL NOLAN 45 ABL MONTAGUE 211 WFS DENTON 44 DAL LIVE OAK 195 CRP KLEBERG 42 CRP REEVES 189 ODA SCHLEICHER 41 SJT ATASCOSA 185 SAT KING 40 CHS CROCKETT 164 SJT MADISON 38 BRY TARRANT 164 FTW YOAKUM 35 LBB WHEELER 137 CHS STEPHENS 33 BWD GAINES 136 LBB CULBERSON 32 ELP WISE 120 FTW BEE 30 CRP ARCHER 107 WFS TOM GREEN 30 SJT JACK 107 FTW PANOLA 26 ATL Based on Total Number Of Wells ANDREWS 1208 ODA GAINES 139 LBB MARTIN 975 ODA KING 124 CHS GLASSCOCK 885 SJT LOVING 117 ODA UPTON 817 ODA JACK 99 FTW MIDLAND 782 ODA YOAKUM 98 LBB DIMMIT 698 LRD JOHNSON 93 FTW KARNES 641 CRP MEDINA 93 SAT LA SALLE 627 LRD LIPSCOMB 92 AMA ECTOR 597 ODA COOKE 73 WFS REAGAN 559 SJT PANOLA 73 ATL MILAM 540 BRY DENTON 70 DAL MC MULLEN 477 SAT DAWSON 68 LBB WEBB 425 LRD PARKER 65 FTW IRION 366 SJT MADISON 63 BRY REEVES 361 ODA CROSBY 60 LBB GONZALES 354 YKM NOLAN 58 ABL DEWITT 342 YKM ZAVALA 58 LRD HOWARD 322 ABL WILSON 56 SAT MONTAGUE 279 WFS FREESTONE 51 BRY WARD 236 ODA SCHLEICHER 51 SJT WHEELER 217 CHS CULBERSON 50 ELP LIVE OAK 216 CRP STEPHENS 47 BWD CROCKETT 207 SJT STERLING 43 SJT WISE 183 FTW MOORE 42 AMA TARRANT 154 FTW ROBERTS 38 AMA ATASCOSA 149 SAT WICHITA 37 WFS CRANE 144 ODA FRIO 36 SAT MITCHELL 143 ABL ROBERTSON 36 BRY HEMPHILL 140 AMA HIDALGO 31 PHR 2

35 Weigh In Motion Sites Average of the 10 Heaviest Wheel Loads (input to FPS 21) WIM Station District Highway Laredo IH kips 13.6 kips 535 Corpus IH kips 12.5 kips 538 Corpus US kips 14.8 kips 533 Odessa IH kips 17.8 kips Current Recommendations Determine the number of oil and gas wells that the highway will serve If no pipelines exist, multiply the number of wells by 115, KESALs (based on Eagle Ford information) If pipelines exist, multiply the number of wells by a lower number, such as 28, KESALs (based on Barnett Shale information) Add the above result to the TxDOT TPP 20 Year 18 KESAL Traffic Projection Use 17,000 lbs as the ATHWLD for the Triaxial Design Check Maintenance Division can assist (Mark McDaniel, Magdy Mikhail, Jenny Li) Triaxial Class versus Total Pavement Thickness Triaxial Class versus Total Pavement Thickness 3