D.M. WILLS
ASSOCIATES LIMITED
Project Profiles
Hydraulic Analysis
Byersville Creek Culvert – Culvert Replacement – City of Peterborough
The Byersville Creek channel was re-aligned on the west side of Johnson Drive to
eliminate the existing “jog” in the channel at that location. The City has also
requested that bank stabilization works be considered on the west bank of the
Otonabee River 45 metres upstream and downstream of the culvert crossing.
The existing culverts consisted of two (2) 2.5 metre diameter corrugated steel
pipes. The recommended culvert size consisted of a three (3) cell structures with
each cell having a span of 6 metres and a height of 2.4 metres. The sizing
accounted for the Otonabee River backwater effect.
Highway 17 Petawawa River Bridge Replacement – MTO
The Petawawa River Bridge at Highway 17 is a three span structure with an
overall length of 122 m and approximately 4.5 m of clearance from design water
levels. The Petawawa River is a major tributary to the Ottawa River, draining over
4125 km2 of hilly and forested lands, including a large portion of Algonquin Park.
As part of Highway rehabilitation and widening works, Wills provided a detailed
hydraulic assessment and report for the bridge. Special consideration was given
to issues of constructability and environmental impact.
Tayside Municipal Drain, Hydraulic Analysis - MTO
The Tayside Municipal Drain at Highway 417 was a 4.3 m by 2.9 m structural plate
corrugated steel pipe arch in need of replacement due to severe deterioration
of the culvert floor. Wills staff assessed the condition and hydraulic capacity of
the culvert and made recommendations for replacement. The characteristics of
the contributing area were assessed and several hydrologic methods were
completed and the results compared. The MTO Gravity Pipe Design protocol
was observed to identify all potential alternative suitable materials.
Six Bridges near Hearst, Hydraulic Analysis – MTO
Wills staff developed comprehensive open channel (HEC-RAS) hydraulic models
for each of six bridge replacements on Highways 11 and 583. The analysis
incorporated impacts due to the placement and/or removal of piers, temporary
conditions during construction in which both the existing and proposed bridges
would be in position, pier and abutment scour, and floodline impact calculations
due to expansion of the roadside embankments.