A timeline of Portsmouth bridges

Spanning the decades

1794 First bridge across the Piscataqua opens at Newington, N.H.

1822 First bridge from Portsmouth, N.H., to Kittery, Maine, opens near current site of Sarah Mildred Long Bridge


1844 Railroad bridge opens at same site

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1923 Memorial Bridge opens in January

1938 Railroad bridge collapses, killing two members of train crew

1940 N.H.-Maine Interstate Bridge opens, renamed for Long in 1987

1972 I-95 “high-level” or “high-span” bridge opens


2011 Memorial Bridge closed to traffic

2012 Memorial Bridge demolished

2013 New Memorial Bridge to open

SOURCES: Discover Portsmouth and Richard Candee