Hwy 129 Structural Culvert Replacement
Location
Sudbury District, Ontario, Canada
Owner
Ministry of Transportation Ontario (MTO)
Role
Consultant
Project Overview
Replacement of two structural culverts and associated roadway enhancements along Highway 129 to improve safety, drainage, and roadway integrity.
Key Components
- Grading, Drainage & Hot Mix Paving – Full-depth surface treatment removal, installation of 50 mm Superpave 12.5 surface course, and placement of 150 mm Granular ‘A’ and 300/325 mm Granular ‘B’ Type II.
- Structural Culvert Replacement – Complete replacement of Structural Culverts 38S-0623/C0 and 38S-0624/C0, including embankment widening and temporary modular bridge installations.
- Roadside Safety Improvements – Upgrades to steel beam guiderails (SBGR), new end treatments, and removal of outdated cable guide rails to meet MTO standards.
- Signage & Pavement Markings – Replacement of select static signs based on reflectivity and condition assessments, and installation of bilingual signage as required.
- Stormwater Management & Drainage – Enhanced drainage with improved ditching, designed for a 25-year flow period with consideration for 100-year and regulatory storm events.
- Traffic Management & Staging – One-lane, two-way staging using temporary traffic signals, modular bridges, and embankment widening to maintain safe traffic flow during construction.
Challenges & Solutions
Project Impact & Benefits
- Improved roadway safety with updated guiderails, enhanced signage, and optimized drainage systems.
- Long-term protection against flooding with upgraded culverts and ditch improvements designed to current MTO standards.
- Minimized traffic disruptions during construction through strategic staging and temporary traffic control measures.
- Sustainable construction practices ensuring environmental protection and compliance with Fisheries Act regulations.