Located in a residential area, the Notre Dame Bridge is a main connection
point for the Jardines Metropolitanos, Villa Nevárez, and University Gardens
communities. During storms, water often rises to the top of bridge and flows
into the street. Additionally, the existing stormwater pipes and inlets built
into the bridge have collapsed and threaten the structural integrity of the
bridge itself.
Because the banks of the Río Piedras will be widened and reinforced with
concrete walls, the bridge must be rebuilt to accommodate the redesigned
channel. Additionally, the bridge will meet the latest seismic
requirements to allow it to withstand significant earthquakes.
In this section of the Río Piedras, the river will be deepened and widened
to increase channel capacity and efficiently convey water downstream. The
banks of the river will be reinforced with concrete walls to provide
structural stability while ensuring that water moves efficiently downstream
without flooding. The river bottom will not be filled with concrete.
Although riprap and other grade control structures will be added to prevent
erosion, the river bottom will feature natural soil and rocks which will
allow for vegetation to grow.
Currently, erosion from the consistent flooding is causing mature trees to
fall into the river. After construction is completed, the remaining green
spaces will be replanted with vegetation, and native or non-invasive trees
to maintain the beautiful, parklike view of the river.
This phase of the project involves constructing a new diversion channel for
the Quebrada Buena Vista in Villa Nevárez. The existing channel, which is
small, flows between Calle 13 and 15, under Villa Nevárez Park, and between
Calle 10 and 18 to meet the Río Piedras. This existing channel will remain.
However, a new diversion canal will be built from PR-21 to guide floodwater
from the Quebrada Buena Vista to the Río Piedras on the far west side of the
University of Puerto Rico Experimental Station. The canal will be constructed
underground and the area it runs under will be restored. This diversion canal
will reroute over 90% of the maximum water that floods Villa Nevárez during a
100-year storm event and is essential to protect homes in the community from
flood waters.