Element Condition Values

Transcription

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2 Element Condition Values Bridge Number I 937 Bridge Location I 15 Over US 95 Inspection Date Elem/Env Element Description Quantity UOM Qty1 Qty2 Qty3 Qty4 001 / 2 General Notes - Pier 2 not accessible during 2015 ground level inspection due to traffic volume on US / 2 Reinforced Concrete Deck/Slab sq ft Deck exhibits pattern cracking from 1/16" wide to 1/8" wide spaced less than 1' throughout (including patched areas) and a few minor spalls to 1" deep in areas of densely concentrated cracks (Photo 5). - Deck exhibits several areas of failing repairs, spalling with exposed and corroded rebar, and settlement. Repairs in northbound lanes total approximately 10% of deck area. Repairs in southbound lanes total approximately 40% of deck area (Photo 6). - Southbound lanes exhibit six 1 sq ft x 2" D spalls and six 4 sq ft x 2" D spalls with exposed and corroded rebar (Photos 6 and 7). Larger spalls are located in Lanes 2 and 3 of Span 1; Lane 3 of Span 2; Lanes 2 and 3 of Span 3; and Lane 2 of Span 4. - Northbound Lane 2 exhibits patched sections which are failing with spalls to 1 sq ft x 2" D. - Deck soffit between the old reinforced concrete girders and the newer prestressed girders exhibits minor transverse cracks with light efflorescence. 104 / 2 Prestressed Concrete Closed Web/Box Girder 765 ft Three girder lines, Girders Girder 2, between Columns 3 and 4 of Pier 1, exhibits a 4" W x 12" L x 3" D spall with 1.5" of exposed and lightly corroded rebar (Photo 8). 105 / 2 Reinforced Concrete Closed Web/Box Girder 510 ft 510 Two girder lines, Girders 1 and 5. - Girders exhibit hairline to 1/64" wide vertical cracks in the webs. - Soffit exhibits random transverse and longitudinal hairline to 1/64" wide cracks. 205 / 2 Reinforced Concrete Column/Pile Extension 24 each 24 Columns of original structure (outer three columns to the east and west) are wrapped with steel seismic shells. - No significant deficiencies. 215 / 2 Reinforced Concrete Abutment 340 ft Abutment breastwalls exhibit hairline to 1/32" wide vertical cracks. - Abutment 1 exhibits open/incipient spalling measuring 3.5' H x 2' W x 6" D at the east end with associated cracks to 1/8" wide and delamination (Photo 9). - Abutment 2 exhibits a 1/8" wide diagonal crack near the northeast wingwall. - Abutment 2 exhibits horizontal cracks in the shear keys to 1/32" wide. 220 / 2 Reinforced Concrete Pile Cap/Footing 20 each 20 - No significant deficiencies. 302 / 2 Compression Joint Seal 340 ft Joints exhibit adhesion failures, deformation, moderately deteriorated areas of joint material, and significant edge spalls along the headers (Photo 10). - There is leakage on the backwalls throughout.

3 Element Condition Values Bridge Number I 937 Bridge Location I 15 Over US 95 Inspection Date Elem/Env Element Description Quantity UOM Qty1 Qty2 Qty3 Qty4 - There is leakage on the backwalls throughout. - Joints exhibit dirt and debris accumulation, especially in the shoulders. - Sealant poured over some sections of compression joint exhibits spotted adhesion failure. - Joint at south end of southbound lanes exhibits several sections of missing joint material. 310 / 2 Elastomeric Bearing 50 each 50 - Felt material around bearing devices for girders is moderately to heavily deteriorated. Bearings themselves, where visible, show no significant deficiencies. 321 / 2 Reinforced Concrete Approach Slab 2 each Concrete approach slabs exhibit widespread cracks to 1/16" wide. 331 / 2 Reinforced Concrete Bridge Railing 510 ft Bridge rails exhibit 1/64" wide vertical cracks, minor impact scrapes, and tire rub marks. 515 / 2 Steel Protective Coating 342 ft 342 Quantity includes steel seismic shells located on outer three exterior columns (original structure). - No significant deficiencies. 516 / 2 Concrete Coating 1 lump sum Northeast and southeast wingwalls exhibit heavy coating peeling and failure (Photo 11). - Abutments generally exhibit failing finish and heavy leakage staining. 646 / 2 Under Deck Lighting System 8 each Under deck lighting attached to Girder 3 is not operational as three lights in Span 2 and two lights in Span 3 are out. Lighting operational status not verified during the 2015 daylight inspection, fixtures appear sound. 650 / 2 Utilities 1 each 1 Bundle of one 4" and one 6" steel conduit attached to west edge of Girder 1. - No significant deficiencies. 651 / 2 Signs/Signals 1 each 1 Single sign attached to west edge of Girder 1 in Span 1. - No significant deficiencies. 680 / 2 Reinforced Concrete Retaining Walls 54 ft 54 - No significant deficiencies. 685 / 2 Concrete Abutment Slope Paving 2 each 2 - No significant deficiencies. 690 / 2 Substructure Scour and Erosion 5 each The southeast approach embankment adjacent to the slope paving exhibits a 12' L x 2' W x 1.5' D erosion channel along the slope paving exposing a utility pipe and abutment footing (Photo 12). 692 / 2 Steel Seismic Shells for Columns 18 each 18

4 Element Condition Values Bridge Number I 937 Bridge Location I 15 Over US 95 Inspection Date Elem/Env Element Description Quantity UOM Qty1 Qty2 Qty3 Qty4 Located on outer three exterior columns (original structure). - No significant deficiencies. 694 / 2 Debris on Seats 2 each There is heavy debris on the bearing seats at both abutments; however, does not appear to be hindering movement of bearings (Photo 13). 750 / 2 Relief Joints 24 ft 24 - Relief joints have been removed except for Lane 1 of the south approach and east shoulder of the north approach in the southbound lanes, no significant deficiencies. 760 / 2 Metal Approach Barrier Rail 1 each 1 - No significant deficiencies. 761 / 2 Reinforced Concrete Approach Barrier Rail 6 each Northeast approach rail exhibits one vertical crack open to 1/32" wide, southeast approach rail exhibits one vertical crack open to 1/8" wide (Photo 14). 770 / 2 Cement Concrete Approach Pavement 1 lump sum - Concrete approach pavement exhibits cracks up to 1" wide, some of which have been sealed, and minor spalling up to 2" wide along the panel joints. - South approach of northbound lanes exhibits one 12' L x 1" W transverse crack in Lane 3 (Photo 15). - South approach of southbound lanes exhibits one 8' L x 1" W transverse crack in west shoulder. - North approach of northbound lanes exhibits a 12' L x 1" W transverse crack in Lanes 1 and 3, and one 15' L x 1" W longitudinal crack in Lane 3. - North approach of southbound lanes exhibits breaking up of concrete in the shoulder with cracking to 3/16" wide. 775 / 2 Approach Roadway Embankment 1 lump sum The northeast embankment exhibits a minor erosion channel to 1' D which is starting to undercut the slope paving panels. 783 / 2 Approach Roadway Drains 3 each 3 - No significant deficiencies, drains in the median inaccessible due to heavy traffic on I-15, but assumed to be clean.

5 State of Nevada Department of Transportation Photo 1: West elevation Photo 2: South approach, southbound

6 State of Nevada Department of Transportation Photo 3: South approach, northbound Photo 4: South general

7 State of Nevada Department of Transportation Photo 5: Typical pattern cracking in the deck Photo 6: Typical patches, failed patches, and spalling with exposed and corroded rebar in the southbound deck

8 State of Nevada Department of Transportation Photo 7: Typical spall with exposed and corroded rebar in the southbound deck Photo 8: Spall with exposed and corroded rebar in Girder 2, Span 2 at Pier 1

9 State of Nevada Department of Transportation Photo 9: Open/incipient spall in Abutment 1 at the east end Photo 10: General condition of the compression joints

10 State of Nevada Department of Transportation Photo 11: Peeling coating on the wingwalls Photo 12: Erosion in the southeast embankment adjacent to the slope paving exposing the abutment footing

11 State of Nevada Department of Transportation Photo 13: Typical debris on abutment seats Photo 14: 1/8" wide crack in the southeast approach rail

12 State of Nevada Department of Transportation Photo 15: 1" wide transverse crack in the south approach pavement, northbound

13 Signs and Utilities Report Bridge Number I 937 Bridge Location I 15 Over US 95 Inspection Date Sign Number & Location on Bridge 1 Sign attached to west face of Girder 1, Span 2 above eastbound lanes Anchor Bolts/ Attachment Displacement Sign Frame Deficient Yes* No Yes* No Sign Frame Assembly Deficient Yes* No Catwalk Deficient Yes* No Luminaire Deficient Yes* No X X X X X Utility Number & Location on Bridge 1 Bundle of one 4" and one 6" steel conduit attached to west edge of Girder 1. Anchorage Utility Utility Supports Displacement Deficient Deficient Yes* No Yes* No Yes* No X X X Note: Please refer to Element Level Inspection for commentary

14 Maintenance Inspection Work Items and Costs Report Bridge Number I 937 Bridge Location I 15 Over US Perform action with next 1 year Timing Criticality Item Code Description Units 2 Inspection Date Std.Unit Cost Quantity Unit Cost Total Cost Repair/Replace 1 - Minor D8 LINFT Expansion Joint Header Repair spalls along headers or replace headers if not repair/replaced during joint replacement. Seal Deck/Slab Cracks 2 - Major D10 SQFT (Pourable Sealant) - Seal deck following repairs of spalls, consider placing an asphalt/polymer overlay. Repair Deck/Slab 2 - Major D12 Spalling/Delamination SQFT (Partial Depth) - Repair delaminated, deteriorated, and spalled areas in the deck. - Consider hydro-demo of the entire deck, corrosion mitigation and additional cover during replacement of wearing surface. Remove and Replace 1 - Minor D6 Expansion Joint LINFT (Compression Seal) - Remove and replace expansion joints. 3 - Perform action within next 2 years Timing Criticality Item Code Description Units 3 Std.Unit Cost Quantity Unit Cost Total Cost Seal Crack in Concrete 1 - Minor R15 LINFT Approach Panel Seal cracks in the approach pavement. Repair/Maintain 1 - Minor D36 LS Utility/Utility Supports - Repair 5 inoperative under deck lights in Spans 2 and 3. Clean Debris from 1 - Minor Sub20 LS Abutment/Pier Seat - Remove debris from abutment seats. 4 - Perform action when time and money permit

15 Maintenance Inspection Work Items and Costs Report Bridge Number I 937 Bridge Location I 15 Over US 95 Inspection Date Timing Criticality Item Code Description Units 4 Std.Unit Cost Quantity Unit Cost Total Cost Seal Cracks in Concrete 1 - Minor R37 Approach Railing LINFT (Pressure Inject Epoxy) Seal crack in the northwest approach rail. Repair/Fill Approach 1 - Minor R4 CUYD Embankment Erosion - Repair erosion channel in the northeast and southeast embankments. Repair Spalls in 2 - Major Super1 SQFT Concrete Superstructure - Patch spall in the Girder 2, Span 2 at Pier 1. Apply Protective Coating 1 - Minor Sub12 SQFT to Abutment/Wingwall - Blast and recoat wingwalls and abutments. Seal Cracks in Abutment 1 - Minor Sub6 LINFT (Pressure Inject Epoxy) - Seal crack in east end of Abutment 2. Repair Spalled Concrete 1 - Minor Sub1 SQFT at Abutment - Repair open/incipient spall in east end of Abutment Monitor Timing Criticality Item Code Description Units 5 Std.Unit Cost Quantity Unit Cost Total Cost 2 - Major Perform in-depth inspection of concrete deck. Sound the entire deck surface and use ground penetrating radar to determine extent of rebar and concrete deterioration.

16 [REV. 7/01] LOCAL NAME Downtown Expressway Interchange Interstate over Expressway TYPE LENGTH ft-in 256'-6 1/2" (SB), 255'-4" (NB) WIDTH ft-in BRIDGE LOAD RATING State of Nevada Department of Transportation Load Rating Report ANALYSIS BY: G. Klockzien/NDOT DATE: 10/5/2011 CHECKED BY: STRUCTURE NUMBER I-937 YEAR CONSTRUCTED Four span continuous reinforced concrete box 1968 Varies for NB & SB bridges DEPTH ft-in 5' - 0 1/2" CONTRACT NUMBER(S) 1259,2019,2721,3132 COUNTY ROUTE DISTRICT MILEPOST CLARK I DATE: Method of Analysis: BRASS (Bridge Rating and Analysis of Structural Systems) version 5 release 9.4 A.) Existing Condition With existing Rating By Load Factor Method 0.0 inch overlay INVENTORY RATING = HS 22.8 = 37.2 Metric Tons OPERATING RATING = HS 36.8 = 60.1 Metric Tons PERMIT TRUCK COLOR CAPACITY = PPGGG B.) Modified Condition With future Rating By Load Factor Method inch AC Overlay INVENTORY RATING = HS --- = ---- Metric Tons OPERATING RATING = HS --- = ---- Metric Tons PERMIT TRUCK COLOR CAPACITY = CONDITION RATING Date of Inspection: Note: Ratings above are NBI Ratings from inspection report weighted for structural items only COMMENTS: Addendum to CH2MHILL Load Rating MIN. VERTICAL CLEARANCE 1/28/ Feet [Summarized from the Structure Inspection Report] Type: Routine 9 Inches DECK RATING: SUPERSTRUCTURE RATING: 6 7 CHANNEL RATING: ---- SUBSTRUCTURE RATING: 7 EST. REMAINING LIFE [Years]: 10 CULVERT RATING: NA STRUCTURE POSTED? [Yes/No]: No Seal and Signature This report was prepared in accordance with AASHTO "Manual for Condition Evaluation of Bridges, 1994 Second Edition" with revisions by Nevada Department of Transportation. Report by: G. Klockzien/NDOT DATE: 10/5/2011

17 [REV. 8/05] State of Nevada DATE Department of Transportation 10/5/2011 Load Rating Summary Sheet LOCAL NAME STRUCTURE NUMBER COUNTY CLARK ROUTE Downtown Expressway Interchange Interstate over Expressway I-937 I 15 MATERIAL PROPERTIES: BRIDGE DATA Deck/---- Girders/ ---- Original Bridge: Concrete F'c (psi)= 3000/ /5000 Four span continuous reinforced concrete box Reinforcing Steel Fy (psi)= 40000/ /60000 Structural Steel Fy (psi)= NA NA Widenings: Prestressing Steel F's (psi) NA Contract # ANALYSIS CRITERIA: Rating Method Loads - Rating performed using LFD - Analyzed structure under "existing" conditions - Analyzed original portion of bridge as an equivalent I-beam - Bridge supported by rollers at abutments and multiple column bents at piers - Used equivalent single square (55.3") column for multiple column bent - Used shear factor = 1.58 to increase all DL and LL to account for skew effects - Used average bridge width plus half of closure pour for determination of live load distribution factor - The compression steel may be incorrect at a section, therefore conservatively ignore compression steel - CA permit trucks modeled with 26kip front axle and 48kip axles at 18ft - Average shear skew factor and no lane fraction ANALYSIS METHOD & RESULTS: Deck Analysis by: G. Klockzien/NDOT 10/5/2011 Checked by: Girders BRASS (Bridge Rating and Analysis of Structural Systems) version 5 release 9.4 Special Items - NA HS20 = AASHTO HS20-44 Truck Load or Lane Load whichever is greatest P5/P9/P13 = Caltrans permit trucks P5, P9, and P13 applied separately with same wheel lines per girder as for HS20 INVENTORY RATING = HS 22.8 = 37.2 Metric Tons OPERATING RATING = HS 36.8 = 60.1 Metric Tons Rating Factors for P5 / P7/ P9/ P11/ P13 = 1.26/1.12/0.97/0.93/0.88 Rating for P7 and P11 interpolated LOAD RATING- Existing Condition Overlays- 0.0 inch overlay Standard Rating Items Controlling Girder Action Special Rating Items INVENTORY RATING: Deck Girders Analysis Point Critical Action Rating Item/ Action RATING FACTOR for HS20 = NA 1.14 SB Shear NA NA OPERATING RATING: RATING FACTOR for HS20 = NA 1.84 SB Shear NA NA RATING FACTOR for P5 = 1.26 SB Shear NA NA RATING FACTOR for P9 = 0.97 SB Shear NA NA RATING FACTOR for P13 = 0.88 SB Shear NA NA LOAD RATING- w/ Modified Condition Overlays- Standard Rating Items Controlling Girder Action Special Rating Items INVENTORY RATING: Deck Girders Analysis Point Critical Action Rating Item/ Action RATING FACTOR for HS20 = OPERATING RATING: RATING FACTOR for HS20 = RATING FACTOR for P5 = RATING FACTOR for P9 = RATING FACTOR for P13 = INVENTORY RATING = HS --- = --- Metric Tons OPERATING RATING = HS --- = --- Metric Tons Rating Factors for P5 / P7/ P9/ P11/ P13 = -.-- / -.-- /-.-- /-.-- /-.--

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19 Last Modified: 03/20/2015 Structure Inventory and Appraisal 1. State Code 329 (Nevada) 2. District 01 (District 01) 3. County 003 (Clark) 4. Place Code (Las Vegas) 5. Inventory Route Feature Intersected US Facility Carried I Structure No. I Location LAS VEGAS 10. Min Vertical Clearance ft. 11. Milepoint Base Hwy Network 1 (Inventory Route is on the Base Network) 13A. LRS Inv Route B. Subroute No. 16. Latitude 17. Longitude 19. Detour Length ' " ' " 20. Toll 3 (On Free Road) 21. Maintenance Resp 01 (State Highway Agency) 22. Owner 01 (State Highway Agency) 32. Appr. Roadway Width 33. Median Functional Class 11 (Urban) 27. Year Built A. Lanes On 7 28B. Lanes Under Avg Daily Traffic Year of ADT Design Load 6 (MS 18+Mod / HS 20+Mod) 3 (Closed median with non-mountable barriers) 34. Skew 24 degrees 35. Structure Flared 1 36A. Bridge Railings 1 (Meets acceptable standards) 36B. Transitions 1 (Meets acceptable standards) 36C. Approach Guardrail 1 (Meets acceptable standards) 36D. Approach GuardRail Term 1 (Meets acceptable standards) ft. 37. Historical Significance 5 (Not eligible) 38. Navigation Control N (Not applicable, no waterway) 39. Vertical Clearance 0.0 ft. 40. Horiz. Clearance 0.0 ft. 41. Posting Status A (Open) 42A. Type of Service On 1 (Highway) 42B. Type of Service Under 1 (Highway, with or w/out pedestrian) 43A. Main Span Material 2 (Concrete continuous) 43B. Main Span Design 05 (Box Beam or Girders) 44A. Appr. Span Material 0 (Other) 44B. Appr. Span Design 00 (Other) 45. No. of Spans Main Unit No. of Appr. Spans Horiz. Clearance 67.9 ft. 48. Length Max Span 85.0 ft. 49. Structure Length ft. 50. Curb/Sdwk Width LT 0.00 ft. RT 0.00 ft. 51. Width Curb to Curb ft. 52. Deck Width Out to Out ft. 53. Min. Vert. Clearance Over 328 ft. 54A. Min. Vert. Underclear H (Highway beneath structure) 54B. Min. Vert. Underclear 19.7 ft. 55A. Min. Lat. Underclear Right H (Highway beneath structure) 55B. Min. Lat. Underclear Right 3.9 ft. 56. Min. Lat. Underclear Left 1.9 ft. 58. Deck 5 (Fair Condition (minor section loss)) 59. Superstructure 7 (Good Condition (some minor problems)) 60. Substructure 6 (Satisfactory Condition (minor deterioration)) 63. Rating Method 1 (Load Factor (LF)) 64. Operating Rating Rating Method 1 (Load Factor (LF)) 66. Inventory Rating Struc Eval 6 (Equal to present minimum criteria) 68. Deck Geometry 9 (Superior to present desirable criteria) 69. Underclearance, 3 (Intolerable) Vert & Horiz 70. Posting 5 (Equal to or above legal loads) 71. Waterway Adequacy N (Not Applicable) 72. Approach Alignment 8 (Equal to present desirable criteria) 75A. Type Of Work 75B. Work Done By 76. Len of Struc Impr ft. 90. Inspection Date 91. Frequency 24 92A. FC Frequency 92B. UW Frequebcy 92C. SI Frequency 92A-1. FC Required N 92B-1. UW Required N 92C-1. SI Required N 93A. FC Inspection Date 93B. UW Inspection Date 93C. SI Date 94. Bridge Impr Cost $ Rdwy Impr Cost $ Total Proj Cost $ Year of Impr Cost 98A. Border Bridge Code (Not Applicable) 98B. % Responsibility 99. Border Bridge No STRAHNET 1 (Is on an Interstate STRAHNET route) 101. Parallel Structure N (No parallel structure) 102. Direction of Traffic 2 (2-way traffic) 103. Temp Structure 104. Hwy Sys Inv Route 1 (Structure/Route is on NHS) 105. Fed Lands Hwys 0 (Not Applicable) 106. Year Reconstructed 107. Deck Type 1 (Concrete Cast-in-Place) 108A. Wearing Surface 1 (Monolithic Concrete (concurrently placed with structural deck)) 108B. Deck Membrane 0 (None) 108C. Deck Protection 0 (None) 109. Truck ADT 8 % 110. Desig National Net 1 (Inventory route on National Truck Network) 111. Pier Protection 112. Bridge Length Y 113. Scour Critical Bridges N (Not over waterway) 114. Future ADT Year Future ADT Min Nav Vert Clear 0 ft Contract Number 202. Seismic Risk 203. Structure Name 204. Culvert Barrel Height 205. Culvert Barrel Width 206. Culvert Barrel Length 207. Total Deck Area sq ft Last Access 01/13/2009 Required Inspection Date 209. Access Required 96 Inspection Frequency 210. Date of Next Access 01/13/2017 Required 211. Bridge Inventory South to North Direction 61. Channel/Channel Prot N (Not Applicable) 62. Culvert N (Not Applicable) Sufficiency Rating: ERROR FO: SD: