South Pasadena, Los Angeles,
California, USA
South Pasadena’s Oaklawn bridge is the first cast-in-place concrete bridge built west of the Mississippi River and the second oldest such structure in the US, as well as the only bridge ever designed by the renowned architects Greene + Greene. Inexperience in using the relatively new technique of cast-in-place concrete over such long spans led to construction defects in the placement of the internal steel reinforcing bars. After many years, the internal decay from the iron-jacking process had required the use of special cleaning, anchoring, and patching practices for the concrete restoration of this beautiful and unique structure.
Wikipedia Reference:
