1012-2025 - Louise Bridge Substructure Rehabilitation Works - Phase 1

D2.          SCOPE OF WORK

D2.1        The Work to be done under the Contract shall consist of structural pier rehabilitation 
works underwater riprap placement and installation of bridge bearings.

D2.2        Parts of Work include:
(a)   Part 1 – must be completed by June 30, 2026 and shall include structural pier rehabilitation 
and riprap placement at Pier SU2 as well as bridge bearing replacement at the South Abutment. SU1.
(b)   Part 2 – may be undertaken in the same timeframe as Part 1 or may be deferred to fall/winter 
of 2026/2027 and be completed by June 30, 2027. The exact schedule is subject to the Contractor’s 
binding declaration as per D21.  It shall consist of structural pier rehabilitation and riprap 
placement at SU4 and bridge bearing replacement at SU5.

D2.3        The major components of the Work for both Part 1 and Part 2 are as follows:
(a)   Mobilization
(b)   Traffic Control
(c)    Installation and removal of temporary access berms in the Red River.
(d)   Supply and installation of sheet piling around perimeter of river piers.
(e)   Partial removal of existing concrete collars on limestone block river piers.
(f)    Design, supply, and installation of micro-piles around perimeter of river piers.
(g)   Installation of reinforcement ties including coring transversely through 
concrete-rubble-filled limestone block pier shafts, casing the core holes and grouting the bars.
(h)   Supply and installation of reinforcing steel dowels into the limestone block piers.
(i)     Supply and placement of concrete reinforcing steel.
(j)     Supply and installation of reinforced concrete base slabs and pier jackets at river piers.
(k)    Supply and placement of underwater riprap.
(l)     Temporary jacking and support of bridge superstructure.
(m)  Removal of existing bridge bearings.
(n)   Installation of new bridge bearings supplied by others.
(o)   Fabrication of miscellaneous metal.