Provide repairs and replacement recommendations for the deteriorating North Washington Bridge over the Charles River

North Washington Street Bridge


Boston, Massachusetts, USA

The location of the North Washington Street Bridge downstream of the New Charles River Dam has complex hydraulic patterns. Typical hydrologic and hydraulic modelling methods are unable to capture these patterns and adequately describe scour around the bridge. Two-dimensional modelling is needed to determine the complex flow patterns and understand the predicted scour at the existing and proposed bridge. The bridge piers and abutments were designed using the results of the hydraulic model and scour analysis. Our evaluation included how conditions could change due to predicted sea level rise in the area to make the proposed structure more resilient.

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