St. Vital Twin Bridge Over the Red River Rehabilitation and Related Works

D3.          SCOPE OF WORK

D3.1        The Work to be done under the Contract shall consist of the rehabilitation of St. Vital 
Twin Bridge over the Red River, rehabilitation of pedestrian underpass tunnels, and Roadworks 
including Landscaping from Fermor Avenue to Rathgar Avenue.

D3.2        The Work to be done under the Contract shall consist of two parts:
(a)  Part 1 – 2023 City Funded Works
(b)  Part 2 – 2024 City Funded Works

D3.3        Part 1 – 2023 City Funded Works shall consist of:
(a)  Structural Works - Southbound Structure
(b)   Mobilization/Demobilization (Part 1)
D3.4        Part 2 – 2024 City Funded Works shall consist of:
(a)   Structural Works – Northbound Structure
(b)   Pedestrian Underpasses, Rehabilitation
(c)    Overhead Sign Structures Removal/Installation
(d)   Electrical
(e)   Southbound Osborne/Dunkirk, Rathgar to Fermor, Rehabilitation
(f)    Northbound Dunkirk/Osborne, Fermor to Rathgar, Rehabilitation
(g)   West Access Road and Muti-use Paths, Concrete Reconstruction
(h)   East Access Road and Multi-use Paths, Concrete Reconstruction
(i)     Kingston Row, Rehabilitation
(j)     Churchill Drive Path, Construction
(k)    Water and Waste Work
(l)     Landscaping Works
(m)  Mobilization/Demobilization (Part 2)

D3.5        The City currently has no approved funding in the Capital Budget for Part 2 of the 
Work, but is anticipating receiving funding approval by late March, 2023. Part 2 of the Work is 
contingent upon the City Council approving sufficient funding.
D3.5.1             Further to C7.1, if notice of sufficient funding is not received, the City shall 
have the right to not award Part 2.
D3.5.2             If Part 2 is eliminated pursuant to D3.5.1, the time periods stipulated in D29 
for Substantial Performance of the Work and in D30 for Total Performance of the Work will be 
reduced proportionally by the Contract Administrator acting reasonably.
D3.6        The major components of the Work are as follows:
(a)  Structural Works
(i)     Excavate behind and in front of abutments for subsurface drainage construction;
(ii)     Complete removal and disposal of existing bridge deck, traffic barriers, approach slabs 
and slope paving;
(iii)     Partial removal and disposal of abutment ballast walls, bearing seats, stair treads and 
pedestrian underpass curbs;
(iv)     Complete removal and disposal of existing bridge expansion joints, abutment jacking beams 
and bridge expansion bearings;
(v)     Removal and salvaging of existing aluminum pedestrian handrail and aluminum barrier rail 
and posts;
(vi)     Partial removal of abutment roof slab and pedestrian underpass floor by hydrodemolition;
(vii)     Supply and install new steel girder cover plates, filler plates, stiffeners, pier jacking 
beam modifications, abutment jacking beams, splice plates, jacking plates and shear studs;
(viii)     Surface preparation and coating of steel girder superstructure;
(ix)     Supply and installation of stainless steel reinforcing bars and black steel reinforcing 
bars;
(x)     Drilling and grouting steel reinforcing dowels;
(xi)     Cast new concrete bridge deck, traffic barriers, approach slabs and slope paving;
(xii)     Complete abutment repairs including concrete removals, concrete repairs, ballast wall and 
overlay construction;
(xiii)     Complete pier repairs including construction of bearing pedestals;
(xiv)     Complete pedestrian underpass rehabilitation including concrete removals, concrete 
repairs, heat tracing, waterproofing, lighting upgrades and painting;
(xv)     Supply and installation of galvanized miscellaneous metal including deck drains, grates 
and duct enclosures and hangers;
(xvi)     Place bridge deck waterproofing and protection system;
(xvii)     Jack-up and temporarily support bridge superstructure;
(xviii)     Supply and install bridge bearings;
(xix)     Design and construct temporary protection and environmental containment system;
(xx)     Construction of galvanic protection systems including zinc anodes and activated arc spray 
zinc;
(xxi)     Supply and installation of aluminum pedestrian handrail/bicycle rail and aluminum barrier 
rail and posts;
(xxii)     Construction of asphalt overlay on bridge;
(xxiii)     Supply and install bridge expansion joints;
(xxiv)     Supply and install new steel overhead sign support structures, sign panels and remove 
existing sign structures; and
(xxv)     Supply and install duct bank and hanger system underside of bridge deck.
(b)  Roadworks
(i)     Planning existing asphalt overlay;
(ii)     Removal of existing pavement;
(iii)     Excavation;
(iv)     Sewer Televising;
(v)     External Point Repairs and Manhole Repairs;
(vi)     Installation of catch basins and sewer service pipe;
(vii)     Compaction of sub-grade;
(viii)     Placement of imported fill;
(ix)     Installation of sub-drains;
(x)     Placement of separation/ filtration geotextile fabric and geogrid;
(xi)     Placement of subbase and base course materials (Granular A);
(xii)     Full depth concrete repairs of existing joints and slabs;
(xiii)     Renewal of existing curbs;
(xiv)     Construction of concrete splash strip;
(xv)     Construction of concrete safety curb and safety median;
(xvi)     Construction of integral, dowelled and separate barrier curb (150 mm and 180 mm height), 
modified barrier curb and ramp curbs;
(xvii)     Adjustment of existing drainage and water appurtenances;
(xviii)     Installation of Traffic Signals conduit, service boxes, and concrete bases;
(xix)     Construction of 230 mm Plain Dowelled and 200 mm Reinforced Concrete Pavements;
(xx)     Placement of Asphalt Overlay (Type 1A, average thickness 80 mm);
(xxi)     Placement of Asphalt Pavement (Type 1A, average thickness 75 mm);
(xxii)     Renewal of Existing Concrete Sidewalk;
(xxiii)     Construction of 100 mm Concrete Sidewalk with Paving Stone Banding and MMA Banding;
(xxiv)     Installation of detectable surface warning tiles; and
(xxv)     Boulevard and ditch grading.
(c)  Landscaping
(i)     Removal of existing trees;
(ii)     Planting of trees;
(iii)     Topsoil; and
(iv)     Sodding.


 

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