2013 Roads and Sidewalk Capital Programs Roads and Parks Maintenance Department Development & Infrastructure Division December 2, 2013.

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Presentation transcript:

2013 Roads and Sidewalk Capital Programs Roads and Parks Maintenance Department Development & Infrastructure Division December 2, 2013

Presentation Outline –Provide an update on 2013 Capital funded programs shave and pave crack sealing rural resurfacing sidewalk replacement/repair –Successes –Going forward

Shave and Pave What is it ? Milling road surface –curb to curb Minimum milling depth 40 mm Drainage improvements – curb/catch basin rebuilds Placement of top coat of asphalt – re-establish road crown and drainage pattern No changes to the road cross section – width or longitude high points Beginning to end – typically 4 weeks on a road Minimum design required Generally warranted once or twice over roadway life cycle

Shave and Pave When to use it? Signs of pavement distress: Alligatoring (crossing of cracks) High density of longitudinal/transverse cracking Pavement oxidization (brittle) Loss of road crown Poor road drainage

Shave and Pave 2013 program: –Original scope – 35 roads – 14 lane/km. –Early tendering led to unit costs lower than budgeted –Additional 19 roads included – 12 lane/km. –Construction start – late May –Completion – Early December

Crack Sealing What is it? Preventive maintenance techniques to extend the life of a pavement structure Process of creating a flexible, waterproof seal, in and over a road crack or joint Prevents water from entering the crack and causing further damage through freeze/thaw cycles Generally will extend the road life cycle by 3 to 5 years before shave and pave is required

Crack Sealing What is it ? con’t Road cracks are mechanically routed to a depth and width of approximately 40 mm Modified hot polymer bituminous sealant is applied in the prepared crack When to use ? Initial signs of road surface deterioration Approximately 55,000 linear metres of road cracks were filled on 20 road sections

Rural Surface Treatment Program What is it? Surface treatment is city standard for rural roads Tar and chip –Asphalt emulsion is applied /w –Layer of stone chips –Driveable within a short period of time Guide rails, drainage and road base conditions are inspected and repaired in advance, as required.

Rural Surface Treatment Program 2013 Rural Road Program: 138 lane/km in the rural area 6 year cycle with focus on building road base 20 to 25 lane/km of roadway completed yearly Once roadway bases have been improved, other smoother micro paving surface materials will be placed in 2017 Improved rider comfort

Sidewalk Program What is it? Program developed to provide a safe walking surface for pedestrians by addressing trip ledges City has approximately 800 km of sidewalk Ontario Regulation (239/02) requires sidewalks to be inspected annually Inventory increases as additional sidewalks are constructed Implementation of replacement and repairs program needs to be systematic and focused to meet level of service requirements

Sidewalk Program Annual Inspection: GPS and mobile computing used in the spring All 800 km of sidewalk was inspected and trip ledges marked by 4 staff – completed in 18 working days Trip ledges were organized into 2 categories –40 mm +++ ( to be replaced) –15 mm to 40 mm ( to be ground or mudjacked)

Sidewalk Program 2013 Program Early start for replacements and repairs Improved tendering requirements 2 contractors used with specific tasks assigned to each –Remove and replace slab and grinding ledges –Other - Mud jacking

2013 Sidewalk Program 2013 Program # of Trip Ledges Completion Rate Trip ledges > than 40 mm % Trip Ledges 15 mm to 40 mm 10,40090 %* Total 10,813 Priority was given to replacement of the 40 mm +++ trip ledges – greatest risk to pedestrians Large amount of 15 to 40 mm trip ledges required additional contractor resources Any remaining will be completed first in 2014 * weather permitting

2013 Sidewalk Program Alternative Sidewalk Rehabilitation – Context Sensitive When sidewalk locations impact the root system of mature trees Guidelines developed with city forestry group. Evaluated by an Arborist to determine appropriate technique.

Key Successes 1.Early tendering for the shave and pave program led to lower than budgeted unit costs, allowing a second group of roads to be added to the program. 2.Early completion of the sidewalk inspection program allowing for repairs to proceed early in the summer with a high repair/replacement completion rate. 3.Continued road base repairs on rural roads will enable the future application of alternative smoother surface materials for road users. 4.Development of context sensitive sidewalk replacement techniques to minimize impact on tree roots. 5.Continued coordination of activities and resources between Roads and Parks Maintenance and Engineering. Staff well positioned to manage additional roads as funds become available

Going Forward 2014 Capital Program: Shave and Pave Program- $2,500,000 budget 3 year shave and pave program being developed Rural Resurfacing and Crack Sealing - $380,000 budget Continuation of 6 year rural resurfacing and crack sealing programs Sidewalk Repair/Renewal - $350,000 budget Inventory collection and replacement repairs, as identified

2013 Roads and Sidewalk Capital Programs Questions ?