Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Bridgeport Swing Span Bridge, Spanning Tennessee River, Bridgeport, Ja...
Significance: The Bridgeport Swing Span Railroad Bridge embodies the distinctive characteristics of a type, period and method of construction. Its method of construction (pin-connected) is rare for a swing bri... More
Gianella Bridge, Spanning Sacramento River at State Highway 32, Hamilt...
Significance: The Gianella Bridge is the oldest remaining highway swing bridge in California. It is important in local history for its relation to events in local economic and agricultural development. It is ... More
Gianella Bridge, Spanning Sacramento River at State Highway 32, Hamilt...
Significance: The Gianella Bridge is the oldest remaining highway swing bridge in California. It is important in local history for its relation to events in local economic and agricultural development. It is ... More
Gianella Bridge, Spanning Sacramento River at State Highway 32, Hamilt...
Significance: The Gianella Bridge is the oldest remaining highway swing bridge in California. It is important in local history for its relation to events in local economic and agricultural development. It is ... More
Leavenworth Bridge, Spanning Missouri River, Leavenworth, Leavenworth ...
See also HAER NE-2 for historical report and additional documentation. Significance: The bridge that George Morison designed for Leavenworth represented a synthesis of his previous thirteen bridges over the Mis... More
Leavenworth Bridge, Spanning Missouri River, Leavenworth, Leavenworth ...
See also HAER NE-2 for historical report and additional documentation. Significance: The bridge that George Morison designed for Leavenworth represented a synthesis of his previous thirteen bridges over the Mis... More
Leavenworth Bridge, Spanning Missouri River, Leavenworth, Leavenworth ...
See also HAER NE-2 for historical report and additional documentation. Significance: The bridge that George Morison designed for Leavenworth represented a synthesis of his previous thirteen bridges over the Mis... More
Leavenworth Bridge, Spanning Missouri River, Leavenworth, Leavenworth ...
See also HAER NE-2 for historical report and additional documentation. Significance: The bridge that George Morison designed for Leavenworth represented a synthesis of his previous thirteen bridges over the Mis... More
Leavenworth Bridge, Spanning Missouri River, Leavenworth, Leavenworth ...
See also HAER NE-2 for historical report and additional documentation. Significance: The bridge that George Morison designed for Leavenworth represented a synthesis of his previous thirteen bridges over the Mis... More
Lenox Bridge, Spanning Obion River, Rural Road S8025, Lenox, Dyer Coun...
Significance: Believed to be the sole surviving hand-operated, swing span, pony Pratt through truss bridge within Tennessee. The bridge has retained its integrity of engineering design representative of transpo... More
Lenox Bridge, Spanning Obion River, Rural Road S8025, Lenox, Dyer Coun...
Significance: Believed to be the sole surviving hand-operated, swing span, pony Pratt through truss bridge within Tennessee. The bridge has retained its integrity of engineering design representative of transpo... More
Lenox Bridge, Spanning Obion River, Rural Road S8025, Lenox, Dyer Coun...
Significance: Believed to be the sole surviving hand-operated, swing span, pony Pratt through truss bridge within Tennessee. The bridge has retained its integrity of engineering design representative of transpo... More
India Point Railroad Bridge, Spanning Seekonk River between Providence...
Significance: The India Point Railroad Bridge is one of 25 surviving swing bridges in southern New England, and one of three in Rhode Island. It is an example of early-twentieth-century bridge truss design in ... More
India Point Railroad Bridge, Spanning Seekonk River between Providence...
Significance: The India Point Railroad Bridge is one of 25 surviving swing bridges in southern New England, and one of three in Rhode Island. It is an example of early-twentieth-century bridge truss design in ... More
Rock Island Arsenal, Rock Island Bridge, Fort Armstrong Avenue, Rock I...
Significance: The Rock Island Bridge was constructed in 1895-1896 to connect the arsenal with Davenport, Iowa. It was the first major bridge commission of Chicago engineer Ralph Modjeski, who subsequently esta... More
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph - city, downtown, New York, United States, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph - city, downtown, New York, United States, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph - New York, United States, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph - city, downtown, New York, United States, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph - New York City, downtown, United States, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of ship dock, port, embarkment, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of ship dock, port, embarkment, free to use, no copyright restrictions image - Picryl description
Harvard Bridge, Spanning Charles River at Massachusetts Avenue, Boston...
Significance: The Harvard Bridge is located in the Charles River Basin Historic District. Survey number: HAER MA-53 Building/structure dates: 1887- 1891 Initial Construction Building/structure dates: 1898... More
Harvard Bridge, Spanning Charles River at Massachusetts Avenue, Boston...
Significance: The Harvard Bridge is located in the Charles River Basin Historic District. Survey number: HAER MA-53 Building/structure dates: 1887- 1891 Initial Construction Building/structure dates: 1898... More
Harvard Bridge, Spanning Charles River at Massachusetts Avenue, Boston...
Significance: The Harvard Bridge is located in the Charles River Basin Historic District. Survey number: HAER MA-53 Building/structure dates: 1887- 1891 Initial Construction Building/structure dates: 1898... More
Stono River Bridge, Spanning Stono River between James & Johns Islands...
Significance: The Stono River Bridge is identified as "Charleston 3) in the South Carolina Department of Transportation's Metal Truss Highway Bridge Inventory. The bridge is noteworthy in that it represents th... More
Weems Creek Bridge, Spanning Weems Creek at MD Route 436, Annapolis, A...
Significance: This bridge is one of only three remaining swing span bridges in Maryland and is the oldest of the three. It is important in the history of transportation in Maryland as a relatively rare example... More
New Bedford-Fairhaven Middle Bridge, Spanning Acushnet River on U.S. H...
Significance: The New Bedford-Fairhaven Middle Bridge is a relatively early example of electric power applied to a moveable bridge span, and is one of the longest (288') surviving swing spans in Massachusetts, ... 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
Middle Bridge, Spanning Osage River, Warsaw, Benton County, MO
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
Middle Bridge, Spanning Osage River, Warsaw, Benton County, MO
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Coquille River Bridge, Spanning Coquille River at State Route 244, Coq...
Significance: The Coquille River Bridge is on the original route of the Oregon Coast Highway. It is one of the oldest and few remaining swing span bridges in Oregon. It was designed by State Bridge Engineer C... More
Victory Bridge, Spanning Raritan River at New Jersey Route 35, Perth A...
Significance: This 360 foot center-bearing swing span bridge with steel deck girder and concrete bent approach spans is significant as the largest and most recent example of a highway bridge of its type in the ... More
Victory Bridge, Spanning Raritan River at New Jersey Route 35, Perth A...
Significance: This 360 foot center-bearing swing span bridge with steel deck girder and concrete bent approach spans is significant as the largest and most recent example of a highway bridge of its type in the ... More
Victory Bridge, Spanning Raritan River at New Jersey Route 35, Perth A...
Significance: This 360 foot center-bearing swing span bridge with steel deck girder and concrete bent approach spans is significant as the largest and most recent example of a highway bridge of its type in the ... More
Victory Bridge, Spanning Raritan River at New Jersey Route 35, Perth A...
Significance: This 360 foot center-bearing swing span bridge with steel deck girder and concrete bent approach spans is significant as the largest and most recent example of a highway bridge of its type in the ... More
New York, New Haven & Hartford Railroad, Shaw's Cove Bridge, Spanning ...
Significance: The Shaw Cove's Bridge is a forged steel rim-bearing swing bridge. It is a single-span, pin-connected Pratt through truss with thin diagonal eye-bars serving as tension members. It is significan... More
Jackson Street Bridge, Spanning Passaic River, Newark, Essex County, N...
Significance: The Jackson Street Bridge was constructed in the area of the Morris Canal, a current National Register property, on the former site if Balback Smelting and Refining Company, by Fagan Iron Works wh... More
Jackson Street Bridge, Spanning Passaic River, Newark, Essex County, N...
Significance: The Jackson Street Bridge was constructed in the area of the Morris Canal, a current National Register property, on the former site if Balback Smelting and Refining Company, by Fagan Iron Works wh... More
Jackson Street Bridge, Spanning Passaic River, Newark, Essex County, N...
Significance: The Jackson Street Bridge was constructed in the area of the Morris Canal, a current National Register property, on the former site if Balback Smelting and Refining Company, by Fagan Iron Works wh... More
Jackson Street Bridge, Spanning Passaic River, Newark, Essex County, N...
Significance: The Jackson Street Bridge was constructed in the area of the Morris Canal, a current National Register property, on the former site if Balback Smelting and Refining Company, by Fagan Iron Works wh... More
Jackson Street Bridge, Spanning Passaic River, Newark, Essex County, N...
Significance: The Jackson Street Bridge was constructed in the area of the Morris Canal, a current National Register property, on the former site if Balback Smelting and Refining Company, by Fagan Iron Works wh... More
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
J. H. Millhollin Memorial Bridge, Spanning Ocmulgee River at Blackshea...
Significance: The J.H. Millhollin Bridge is one of only four remaining swing span bridges recorded in Georgia. The bridge, composed of a Camelback through truss and a Warren through truss swing span, is the on... More
Southern Pacific Railroad Shasta Route, Bridge No. 210.52, Milepost 21...
Significance: The Southern Pacific Railroad Shasta Route, built as the California and Oregon Railroad and the Central Pacific Railroad between Roseville, California and Portland, Oregon was the first thrust nor... More
Southern Pacific Railroad Shasta Route, Bridge No. 210.52, Milepost 21...
Significance: The Southern Pacific Railroad Shasta Route, built as the California and Oregon Railroad and the Central Pacific Railroad between Roseville, California and Portland, Oregon was the first thrust nor... More
Judsonia Bridge, Spanning LIttle White River at County Road 66, Judson...
Significance: The Judsonia bridge, completed in 1924, is significant as the only known swing bridge in Arkansas designed as a cantilever. Besides adding an aesthetic touch, the cantilever-like peak on the top ... More
Colusa Bridge, Spanning Sacramento River, Colusa, Colusa County, CA
Significance: The turning mechanism, although presently electrically operated, was originally hand-operated, is representative of several swing span bridges throughout California. Survey number: HAER CA-7 Bui... More
Colusa Bridge, Spanning Sacramento River, Colusa, Colusa County, CA
Significance: The turning mechanism, although presently electrically operated, was originally hand-operated, is representative of several swing span bridges throughout California. Survey number: HAER CA-7 Bui... More
Colusa Bridge, Spanning Sacramento River, Colusa, Colusa County, CA
Significance: The turning mechanism, although presently electrically operated, was originally hand-operated, is representative of several swing span bridges throughout California. Survey number: HAER CA-7 Bui... More
Colusa Bridge, Spanning Sacramento River, Colusa, Colusa County, CA
Significance: The turning mechanism, although presently electrically operated, was originally hand-operated, is representative of several swing span bridges throughout California. Survey number: HAER CA-7 Bui... More
Chicago, Milwaukee & St. Paul Railway, Bridge No. Z-2, Spanning North ...
Significance: The Chicago, Milwaukee & St. Paul Railway's Bridge No. Z-2 is not only one of a few remaining swing bridges in Chicago, but is also of a rare asymmetrical or "bob-tail" type. The pivot pier is on... More
Chicago, Milwaukee & St. Paul Railway, Bridge No. Z-2, Spanning North ...
Significance: The Chicago, Milwaukee & St. Paul Railway's Bridge No. Z-2 is not only one of a few remaining swing bridges in Chicago, but is also of a rare asymmetrical or "bob-tail" type. The pivot pier is on... More
St. Francis River Bridge, Spanning St. Francis River at U.S. Highway 7...
Significance: The bridge over the St. Francis River on U.S. 70, constructed by the Wisconsin Bridge and Iron Company, was part of a 1930s highway and development project. Comparable with the Black River Bridge... More
St. Francis River Bridge, Spanning St. Francis River at U.S. Highway 7...
Significance: The bridge over the St. Francis River on U.S. 70, constructed by the Wisconsin Bridge and Iron Company, was part of a 1930s highway and development project. Comparable with the Black River Bridge... More
Tombigbee River Bridge, Spanning Tombigbee River at State Highway 182,...
Significance: The bridge was listed on the National Register of Historic Places in 1988. The bridge over the Tombigbee River at Columbus, Lowndes County, Mississippi was built in 1927 by the Mississippi State H... More
Tombigbee River Bridge, Spanning Tombigbee River at State Highway 182,...
Significance: The bridge was listed on the National Register of Historic Places in 1988. The bridge over the Tombigbee River at Columbus, Lowndes County, Mississippi was built in 1927 by the Mississippi State H... More
Tombigbee River Bridge, Spanning Tombigbee River at State Highway 182,...
Significance: The bridge was listed on the National Register of Historic Places in 1988. The bridge over the Tombigbee River at Columbus, Lowndes County, Mississippi was built in 1927 by the Mississippi State H... More
Tombigbee River Bridge, Spanning Tombigbee River at State Highway 182,...
Significance: The bridge was listed on the National Register of Historic Places in 1988. The bridge over the Tombigbee River at Columbus, Lowndes County, Mississippi was built in 1927 by the Mississippi State H... More
Maurice River Pratt Through-Truss Swing Bridge, Spanning Maurice River...
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
Merrimac Bridge, Spanning Merrimac River on Bridge Street, Haverhill, ...
Significance: The Merrimac Bridge is located on a site which has been utilized as a major river crossing since the seventeenth century. It contains the oldest moveable span identified in the Massachusetts Depa... More
Merrimac Bridge, Spanning Merrimac River on Bridge Street, Haverhill, ...
Significance: The Merrimac Bridge is located on a site which has been utilized as a major river crossing since the seventeenth century. It contains the oldest moveable span identified in the Massachusetts Depa... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Chicago, Milwaukee & St. Paul Railway, Bridge No. Z-6, Spanning North ...
Significance: The Milwaukee Road's Bridge No. Z-6 may be the only one of its kind ever built, defying the conventional categories of center-bearing and rim-bearing swing bridges. This ingenious design answers ... More
Chicago, Milwaukee & St. Paul Railway, Bridge No. Z-6, Spanning North ...
Significance: The Milwaukee Road's Bridge No. Z-6 may be the only one of its kind ever built, defying the conventional categories of center-bearing and rim-bearing swing bridges. This ingenious design answers ... More
Northern Avenue Swing Bridge, Spanning Fort Point Channel at boundary ...
Significance: The Northern Avenue Swing Bridge, built in 1908, is one of only three surviving swing bridges built by the city of Boston in the late 19th and early 20th century. Today, still operated infrequent... More
Northern Avenue Swing Bridge, Spanning Fort Point Channel at boundary ...
Significance: The Northern Avenue Swing Bridge, built in 1908, is one of only three surviving swing bridges built by the city of Boston in the late 19th and early 20th century. Today, still operated infrequent... More
Northern Avenue Swing Bridge, Spanning Fort Point Channel at boundary ...
Significance: The Northern Avenue Swing Bridge, built in 1908, is one of only three surviving swing bridges built by the city of Boston in the late 19th and early 20th century. Today, still operated infrequent... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Gianella Bridge, Spanning Sacramento River at State Highway 32, Hamilt...
Significance: The Gianella Bridge is the oldest remaining highway swing bridge in California. It is important in local history for its relation to events in local economic and agricultural development. It is ... More
Gianella Bridge, Spanning Sacramento River at State Highway 32, Hamilt...
Significance: The Gianella Bridge is the oldest remaining highway swing bridge in California. It is important in local history for its relation to events in local economic and agricultural development. It is ... More
Gianella Bridge, Spanning Sacramento River at State Highway 32, Hamilt...
Significance: The Gianella Bridge is the oldest remaining highway swing bridge in California. It is important in local history for its relation to events in local economic and agricultural development. It is ... More
Leavenworth Bridge, Spanning Missouri River, Leavenworth, Leavenworth ...
See also HAER NE-2 for historical report and additional documentation. Significance: The bridge that George Morison designed for Leavenworth represented a synthesis of his previous thirteen bridges over the Mis... More
Leavenworth Bridge, Spanning Missouri River, Leavenworth, Leavenworth ...
See also HAER NE-2 for historical report and additional documentation. Significance: The bridge that George Morison designed for Leavenworth represented a synthesis of his previous thirteen bridges over the Mis... More