New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Charlestown Navy Yard, Pier 9, Between Piers 8 & 10, along Mystic Rive...
Significance: Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and Pier 9 occupies the site of one of the early wharfs at Charlestown Navy Yard. Originally known as Sh... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Charlestown Navy Yard, Pier 10, Between Piers 9 & 11 along Mystic Rive...
Significance: Pier 10 is one of four piers built at Charlestown Navy Yard in the decade prior to World War I. Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and occu... More
Mystic Lake Hydroelectric Facility, Hoist House, On west slope of West...
Significance: The hoist house dates to project construction and contributes to the significance of the Mystic Lake Hydroelectric Facility. It is a component of the facility's narrow-guage railroad, a type of re... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
Charlestown Navy Yard, Pier 10, Between Piers 9 & 11 along Mystic Rive...
Significance: Pier 10 is one of four piers built at Charlestown Navy Yard in the decade prior to World War I. Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and occu... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Charlestown Navy Yard, Pier 9, Between Piers 8 & 10, along Mystic Rive...
Significance: Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and Pier 9 occupies the site of one of the early wharfs at Charlestown Navy Yard. Originally known as Sh... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Charlestown Navy Yard, Pier 9, Between Piers 8 & 10, along Mystic Rive...
Significance: Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and Pier 9 occupies the site of one of the early wharfs at Charlestown Navy Yard. Originally known as Sh... More
Charlestown Navy Yard, Pier 10, Between Piers 9 & 11 along Mystic Rive...
Significance: Pier 10 is one of four piers built at Charlestown Navy Yard in the decade prior to World War I. Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and occu... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Charlestown Navy Yard, Pier 10, Between Piers 9 & 11 along Mystic Rive...
Significance: Pier 10 is one of four piers built at Charlestown Navy Yard in the decade prior to World War I. Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and occu... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Charlestown Navy Yard, Pier 10, Between Piers 9 & 11 along Mystic Rive...
Significance: Pier 10 is one of four piers built at Charlestown Navy Yard in the decade prior to World War I. Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and occu... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...
Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction
Charlestown Navy Yard, Pier 9, Between Piers 8 & 10, along Mystic Rive...
Significance: Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and Pier 9 occupies the site of one of the early wharfs at Charlestown Navy Yard. Originally known as Sh... More
Charlestown Navy Yard, Pier 10, Between Piers 9 & 11 along Mystic Rive...
Significance: Pier 10 is one of four piers built at Charlestown Navy Yard in the decade prior to World War I. Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and occu... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Mystic Lake Hydroelectric Facility, Hoist House, On west slope of West...
Significance: The hoist house dates to project construction and contributes to the significance of the Mystic Lake Hydroelectric Facility. It is a component of the facility's narrow-guage railroad, a type of re... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
Charlestown Navy Yard, Pier 9, Between Piers 8 & 10, along Mystic Rive...
Significance: Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and Pier 9 occupies the site of one of the early wharfs at Charlestown Navy Yard. Originally known as Sh... More
Charlestown Navy Yard, Pier 10, Between Piers 9 & 11 along Mystic Rive...
Significance: Pier 10 is one of four piers built at Charlestown Navy Yard in the decade prior to World War I. Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and occu... More
Charlestown Navy Yard, Pier 10, Between Piers 9 & 11 along Mystic Rive...
Significance: Pier 10 is one of four piers built at Charlestown Navy Yard in the decade prior to World War I. Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and occu... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
Charlestown Navy Yard, Pier 9, Between Piers 8 & 10, along Mystic Rive...
Significance: Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and Pier 9 occupies the site of one of the early wharfs at Charlestown Navy Yard. Originally known as Sh... More
Charlestown Navy Yard, Pier 9, Between Piers 8 & 10, along Mystic Rive...
Significance: Wharfs and piers were critical to the Navy Yard's mission of shipbuilding and maintenance, and Pier 9 occupies the site of one of the early wharfs at Charlestown Navy Yard. Originally known as Sh... More
Mystic Lake Hydroelectric Facility, Hoist House, On west slope of West...
Significance: The hoist house dates to project construction and contributes to the significance of the Mystic Lake Hydroelectric Facility. It is a component of the facility's narrow-guage railroad, a type of re... More
Mystic River Drawbridge No. 7, Spanning Mystic River at Boston & Maine...
Significance: Drawbridge No. 7 is apparently the last horizontally folding railroad bridge in the eastern United States. Its technology is representative of the earliest patented movable span bridge in the cou... More
New York, New Haven & Hartford Railroad, Mystic River Bridge, Spanning...
Significance: The Mystic River Bridge is a center bearing, through truss swing bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railro... More
Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...
Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More