Ontario Structure Inspection Manual Inspection Form Structure Number: 12

Transcription

1 Inventory Data: Structure Name Gailbraith Road Bridge 1 Main Hwy/Road # On Under Crossing Navig. Water Non-Navig. Water Rail Type: Road Ped. Other Hwy/Road Name Structure Location Latitude Owner(s) Galbraith Road 0.4 km South West of County Road 9 N Township of Lanark Highlands Longitude Heritage Not Cons. W Cons./not App. List/not Desig. Designation: Desig./not List Desig. & List MTO Region Eastern Road Class: Freeway Arterial Collector Local MTO District Ottawa Posted Speed Not posted No. of Lanes 2 Old County Lanark AADT <500 % Trucks Geographic Twp. Lanark Inspection Route Sequence Structure Type Simply Supported Steel Girder Interchange Number Total Deck Length 11.3 (m) Interchange Structure Number Overall Str. Width 6.9 (m) Min. Vertical Clearance (m Total Deck Area 78.0 (sq.m) Special Routes: Transit Truck School Bicycle Roadway Width 6.1 (m) Detour Length Around Bridge 10 (km) Skew Angle 0 (Degrees) Direction of Structure N-S No. of Spans 1 Fill on Structure 0 (m) Span Lengths 10.3 (m) Historical Data: Year Built 1950 Year of Last Major Rehab Last OSIM Inspection Last Enhanced OSIM Inspection Enhance Access Equipment May 12, 2011 Last Evaluation Current Load Limit 5 (tonnes) (ladder, boat, lift, etc.) Load Limit By-Law # Last Underwater Inspection Last Survey By-Law Expiry Date Rehab History: In 2010 a rehabilitation was done to the south end abutment/deck connection due to noticeable settlement. Page 1 of 14 June 2013

2 Scheduled Improvements: Ontario Structure Inspection Manual Inspection Form Structure Number: 12 Regional Priority Number Programmed Work Year Nature of Program Work: Appraisal Indices: Comments Fatigue Seismic Scour Flood Geometrics Barrier Curb Load Capacity 5 tonnes/axle At the time of the noted settlement in 2010, a load restriction of 5 tonnes per axle was posted at the bridge. Since the posting, a repair to the south end was completed, but the posting has not been removed. Page 2 of 14 June 2013

3 Field Inspection Information: Ontario Structure Inspection Manual Inspection Form Structure Number: 12 Date on Inspection: June 18, 2013 Type of Inspection: OSIM Enhanced OSIM Inspector: Kosta Karadakis, P.Eng. Others in Party: Thomas McCarthy Access Equipment Visual, Sounding Equipment, Digital Camera Weather: Sunny Temperature: 15 C Additional Investigations Required: Priority None Normal Urgent Estimated Cost Material Survey Detailed Deck Survey: Non-destructive Delamination Survey of Asphalt-Covered Deck: Concrete Substructure Survey: Detailed Coating Survey: Detailed Timber Investigation: Post-Tensioned Strand Investigation: Underwater Investigation: Fatigue Investigation: Seismic Investigation: Structure Evaluation: Monitoring Monitoring of Deformations, Settlements and Movements: Monitoring Crack Widths: Investigation Notes: Total Cost $0.00 Overall Structure Notes: Recommended Work on Structure: None Minor Rehab. Major Rehab. Replace Timing of Recommended work: 1 to 5 years 6 to 10 years Overall Comments: Significant section loss of interior girder ends, more prominent at south ends. South end girders buckled and temporary support installed in Date of Next Inspection: 2015 Suspected Performance 00 None 06 Bearing not uniformly loaded/unstable 12 Slippery Surfaces 01 Load carrying capacity 07 Jammed Expansion joint 13 Flooding/channel blockage 02 Excessive deformations (deflections & rotations) 08 Pedestrian/vehicular hazard 14 Undermining of foundation 03 Continuing settlement 09 Rough riding surface 15 Unstable embankments 04 Continuing movements 10 Surface ponding 16 Other 05 Seized bearings 11 Deck drainage Maintenance Needs 01 Lift and Swing Bridge Maintenance 07 Repair to Structural Steel 13 Erosion Control at Bridges 02 Bridge cleaning 08 Repair of Bridge Concrete 14 Concrete Sealing 03 Bridge Handrail Maintenance 09 Repair of Bridge Timber 15 Rout and Seal 04 Painting Steel Bridge Structures 10 Bailey Bridges Maintenance 16 Bridge Deck Drainage 05 Bridge Deck Joint Repair 11 Animal/Pest Control 17 Scaling (Loose Concrete or ACR Steel) 06 Bridge Bearing Maintenance 12 Bridge Surface Repair 18 Other Page 3 of 14 June 2013

4 Repair and Rehabilitation Required: Priority Element Repair and Rehabilitation Required 6 to 10 1 to 5 Within years years 1 year Urgent Estimated Structural Cost Structure Demolition $50,000 Structure Replacement $400,000 OR Deck Rehab. = Sidewalk/Curb Rehab. = Barriers Rehab. = Joints Rehab. = Girders Rehab. = Abuments Rehab. = Pier Rehab. = Other Estimated Structure Dimensions for Costing (m) Deck Length = Deck Width = Total Structural Cost $450, Associated Work: Approaches: Detours: Traffic Control: Utilities: Other: Comments Estimated Associated Work Cost Total Associated Work Cost $0.00 Total Estimated Construction Cost $450, Justification:. Page 4 of 14 June 2013

5 Element Data Element Group: Approaches Length: 6.0m Element Name: Wearing Surface Width: 7.0m Location: N/S approaches Height: Material: Surface Treatment Count: 2.0 Element Type: Total Quantity: 84.0 m 2 Data: m 2 / m / each / % / all Comments: Many pot holes and filled pot holes noted at S approach. Ravelling of the surface also noted. Re-surface asphalt pavement during replacement Element Group: Barriers Length: 17.7m Element Name: Railing Systems Width: Location: E/W side of structure Height: Material: Steel Count: 2 Element Type: Posts and two rails Total Quantity: 35.4m Data: m 2 / m / each / % / all Comments: Collision damage to two posts. Significant surface rust of steel also. Railing system does not meet current bridge design standards and should be upgraded with next rehab. Upgrade barrier system during replacement. Element Group: Decks Length: 11.3m Element Name: Deck Top Width: 6.9m Location: Height: Material: Cast-in-Place Concrete Count: 1 Element Type: Total Quantity: 78.0m 2 Covered by surface treatment Data: m 2 / m / each / % / all Comments: Unable to view majority of deck, but exposed outside edges with severe scaling and disintegration. Surface treatment covering concrete is in good condition expect for a couple small areas. Replace with during structure replacement Page 5 of 14 June 2013

6 Element Group: Sidewalks/Curbs Length: 17.7 m Element Name: Curbs Width: 0.38m Location: E/W side of roadway Height: 0.26m Material: Cast-in-Place Concrete Count: 2 Element Type: Total Quantity: 31.9 m 2 Data: m 2 / m / each / % / all Comments: Rusting staining from reinforcing was noted. Disintegration of E exterior curb. Replace during complete replacement Element Group: Embankments and Streams Length: Element Name: Embankments Width: Location: Height: Material: Native Soil Count: 4 Element Type: Total Quantity: 4 Data: m 2 / m / each / % / all 4 Comments: Moderate erosion of embankment due to rain run-off at all quadrants Element Group: Abutments Length: Element Name: Abutment Walls Width: 6.9m Location: N/S ends Height: 3.0m Material: Cast-in-Place Concrete Count: 2 Element Type: Total Quantity: 41.4 m 2 Data: m 2 / m / each / % / all Comments: Unable to view the S abutment wall as it is covered with structural steel support from strengthening rehab. N wall is in good condition with light scaling and rust staining from girders. Ballast walls also appear to be in good condition. Page 6 of 14 June 2013

7 Element Group: Abutments Length: 3.3m Element Name: Wingwalls Width: Location: All 4 quadrants Height: 1.5m Material: Cast-in-place Concrete Count: 4 Element Type: Total Quantity: 19.8m 2 Data: m 2 / m / each / % / all Comments: Hairline and narrow cracks were noted in the walls. Element Group: Decks Length: 11.3 m Element Name: Soffit Thin Slab Width: 6.9 m Location: Underside of deck Height: Material: Cast-in-place Concrete Count: 1 Element Type: Total Quantity: 78.0 m 2 Data: m 2 / m / each / % / all Comments: Stained cracks were noted. Small spalls with exposed rebar also noted and provide poor portion. Complete replacement. Element Group: Beams/MLE s Length: 11.3 m Element Name: Girders Width: 0.20 m Location: Height: 0.53 m Material: Steel Count: 5 Element Type: I - type Total Quantity: 93.4 m 2 Coating Data: m 2 / m / each / % / all Comments: The top flange of exterior girders exhibit surface rust. The south ends of girders have significant section loss, likely due to leaking deck joint above. S end of interior girders buckling. The north ends of interior girders have significant section loss and buckling appears to be initiating. Replace during complete replacement Page 7 of 14 June 2013

8 Element Group: Accessories Length: Element Name: Signs Width: Location: Height: Material: Count: 8 Element Type: Total Quantity: 8 Data: m 2 / m / each / % / all 8 Comments: Approaches were posted with two hazard markers, bump signs, and a load limit signs at the time of inspection. Element Group: Embankments and Streams Length: Element Name: Streams and Waterways Width: Location: West to East Height: Material: Count: Element Type: Total Quantity: All Data: Comments: m 2 / m / each / % / all all Element Group: Abutments Length: Element Name: Bearings Width: Location: N/S ends Height: Material: Steel Count: 10 Element Type: Pinned plates Total Quantity: 10 Data: m 2 / m / each / % / all 4 6 Comments: Unable to view many of the bearings due to high water levels and strengthening at S abutment. Exterior bearings were in good condition with some surface rust exposed, while interior girders showing signs of significant rust. Page 8 of 14 June 2013

9 1 North approach looking south 2 East elevation (outlet) Page 9 of 14 June 2013

10 3 South joint, repaired end 4 North joint, note settlement at approach Page 10 of 14 June 2013

11 5 Disintegration of exterior curb at SE 6 - Substandard structure connection Page 11 of 14 June 2013

12 7 - Interior girder buckling at south end 8 - Interior girder buckling at south end Page 12 of 14 June 2013

13 9 - Significant section loss and buckling initiating in interior girder at north end 10 - Severe rusting of north end girder Page 13 of 14 June 2013

14 11 - Temporary support at south abutment 12 Typical condition of deck soffit Page 14 of 14 June 2013