30th Street Bridge
Encyclopedia
The 30th Street Bridge, is a girder bridge
that carries vehicular traffic across the Allegheny River
between the Pittsburgh neighborhoods of Troy Hill
and Herrs Island (known by the moniker of Washington's Landing). This is the fourth bridge that has stood on this site. A wooden 19th Century bridge was washed away during an 1882 flood. This was replaced by an arch bridge that spanned the entire length of the Allegheny River; after a 1921 fire destroyed the span across the main channel, the 31st Street Bridge
was constructed as a replacement, and this bridge was again relegated to taking traffic to Herrs Island. A 1939 truss bridge then stood on this site, and it was replaced by the current structure as part of the redevelopment of the island to feature condominiums and a business park instead of warehouses and stockyards.
Girder bridge
A girder bridge, in general, is a bridge built of girders placed on bridge abutments and foundation piers. In turn, a bridge deck is built on top of the girders in order to carry traffic. There are several different subtypes of girder bridges:...
that carries vehicular traffic across the Allegheny River
Allegheny River
The Allegheny River is a principal tributary of the Ohio River; it is located in the Eastern United States. The Allegheny River joins with the Monongahela River to form the Ohio River at the "Point" of Point State Park in Downtown Pittsburgh, Pennsylvania...
between the Pittsburgh neighborhoods of Troy Hill
Troy Hill
Troy Hill is a neighborhood in Pittsburgh, Pennsylvania's North Side. It has a zip code of 15212, and has representation on Pittsburgh City Council by the council member for District 1 ....
and Herrs Island (known by the moniker of Washington's Landing). This is the fourth bridge that has stood on this site. A wooden 19th Century bridge was washed away during an 1882 flood. This was replaced by an arch bridge that spanned the entire length of the Allegheny River; after a 1921 fire destroyed the span across the main channel, the 31st Street Bridge
31st Street Bridge
The 31st Street Bridge, is an arch bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhoods of Troy Hill and the Strip District. The bridge passes over, but does not serve, Herrs Island, which is connected to the mainland by the 30th Street Bridge...
was constructed as a replacement, and this bridge was again relegated to taking traffic to Herrs Island. A 1939 truss bridge then stood on this site, and it was replaced by the current structure as part of the redevelopment of the island to feature condominiums and a business park instead of warehouses and stockyards.