Presentation provided by City of Brandon Administration at the 8th Street Bridge Community Information Session held November 19th, 2015, at Brandon City Hall.

1. 8th Street Bridge
Public Information Session
November 19th, 2015

2. Agenda
 Welcome & Opening Comments (Mayor Rick Chrest)
 Presentation (Coenraad Fourie, Manager of
Development & Transportation)
 Questions and Answer (Mayor Rick Chrest & City
Councillors
 Wrap-up and Next Steps

3. Background History
 Structure consists of 2 distinct sections:
– 1934 section - north of railway tracks (81 years
old);
– 1968 section – spans over railway tracks (47 years
old)
 Structure is at end of life, typical maximum life
expectancy is 50 years

4. Studies & Maintenance
 1984 – Condition Assessment leading to:
– replacement of asphalt surfacing with 100mm
concrete deck surfacing for total of 275mm and
– repairs to substructure and
– expansion joints
(Reid Crowther & Partners Ltd.)

5. Studies & Maintenance (cont.)
 1992 – Complete Condition Assessment leading to:
– Partial and full depth deck repairs to 1968 and 1934 bridge
sections;
– penetrating sealer applied to deck and sidewalks to slow
down deterioration;
– repairs to bridge deck supports at locations 4, 7 and 10;
– repairs to southern bridge (1968 section) abutment / deck
support structure;
– repairs to western bridge deck support beam and walkway
support beams on 1934 (northern) section;
– expansion joint repairs
(Reid Crowther & Partners Ltd.)

6. Studies & Maintenance (cont.)
 1999 – Detailed condition assessment revealing:
– High corrosion potential of steel reinforcement;
– Shear cracks in bridge support beams
(Reid Crowther & Partners Ltd)
 1999 - Bridge Inspection Programme launched with
biannual inspections performed from 2000 to 2007 by Reid
Crowther & Partners and Earth Tech revealed:
– continuously increasing corrosion potential;
– bridge deck chloride contents well in excess of acceptable
threshold values i.e. accelerated deterioration potential

7. Studies & Maintenance (cont.)
 2011 & 2012 – Detailed condition assessment by Dillon
Consulting Ltd. reiterates increasing corrosion potential and
escalating chlorides
 September 2015 – City commissions Dillon Consulting Ltd.
for structural evaluation which leads to bridge closure.
 October 2015 – Dillon Consulting Ltd. retained for cost
estimates of rehabilitation options;
 November 2015 –City Engineer presents options to City
Council; City Council holds Public Information Session

8. 8th Street Bridge Current
Condition

9. 8th Street Bridge Current
Condition

10. Option #1: Rehabilitate to allow
limited vehicle traffic
 Estimated Cost of $1.325M
 Estimated project timeline of 2 – 3 years
 Advantages
– Restores limited vehicle connectivity

11. Option #1: Rehabilitate to allow
limited vehicle traffic (cont.)
 Disadvantages
– Will require additional measures to limit traffic to 4
tonnes
– Would extend the structure service life by only 3 to 5
years
– High uncertainty and potentially significant cost
escalations due to deteriorated sections
– Structure does not meet current design standards
– Final demolition cost (currently $2.3 million) escalates
further

12. Option #2: Demolish & Replace
 Demolition cost of $2.3M and then $28. 5M to $33M for
replacement (depending on location) = Total estimated
cost of $31M to $35M
 Estimated project timeline of 4 – 5 years
 Advantages
– New structure with minimum 50-year design life

13. Option #2: Demolish & Replace
(cont.)
 Disadvantages
– Completion will likely coincide with new Daly Overpass
– High capital cost, low return on investment

14. Option #3: Demolish and replace
with pedestrian/cyclist crossing
 Estimated Cost of $2.3M demolition, plus $9.5M for
pedestrian / cyclist structure = Total Cost of $11.8M
 Estimated project timeline of 3 – 4 years
 Advantages
– Maintains north south connectivity and access for
pedestrians/cyclists
– New structure will meet current standards

15. Option #3: Demolish and replace with
pedestrian/cyclist crossing (cont.)
 Disadvantages
– No vehicular connection
– High capital cost

16. Option #4: Demolish
 Estimated Cost of $2.3M
 Estimated timeline of 1 – 2 years
 Advantages
– Mitigates public safety concerns
– Eliminates future continued maintenance and
monitoring costs
 Disadvantages
– Community impacts

17. Questions ?