Fourth Street Viaduct, Spanning Los Angeles River, Los Angeles, Los An...
Significance: Fourth Street Viaduct was one of several reinforced concrete bridges providing an elegant, sturdy crossing over the Los Angeles River and railroad tracks built by the City of Los Angeles beginning... More
Twentieth Street Viaduct, Spans Platte River Valley between Thirty-thi...
See also Union Pacific Railroad Warehouse, HABS No. CO-128 Significance: It is the longest of Denver's viaducts. Its length grew from the need to cross not only the Platte River but also Denver's extensive rail... More
Ninth Street Viaduct, Spanning Los Angeles River at Olympic Boulevard,...
Significance: Olympic Boulevard Viaduct (formerly the Ninth Street Viaduct) is one of the twelve significant historic bridges over the Los Angeles River. Ninth Street was reconfigured and renamed Olympic Boule... More
Ninth Street Viaduct, Spanning Los Angeles River at Olympic Boulevard,...
Significance: Olympic Boulevard Viaduct (formerly the Ninth Street Viaduct) is one of the twelve significant historic bridges over the Los Angeles River. Ninth Street was reconfigured and renamed Olympic Boule... More
Ninth Street Viaduct, Spanning Los Angeles River at Olympic Boulevard,...
Significance: Olympic Boulevard Viaduct (formerly the Ninth Street Viaduct) is one of the twelve significant historic bridges over the Los Angeles River. Ninth Street was reconfigured and renamed Olympic Boule... More
Ninth Street Viaduct, Spanning Los Angeles River at Olympic Boulevard,...
Significance: Olympic Boulevard Viaduct (formerly the Ninth Street Viaduct) is one of the twelve significant historic bridges over the Los Angeles River. Ninth Street was reconfigured and renamed Olympic Boule... More
Baltimore & Ohio Railroad, Thomas Viaduct, Spanning Patapsco River, El...
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Baltimore & Ohio Railroad, Thomas Viaduct, Spanning Patapsco River, El...
Picryl description: Public domain image of an arch bridge, stone architecture, free to use, no copyright restrictions.
East Twenty-seventh Street Viaduct, Spanning Vine Street, Kansas City,...
Picryl description: Public domain image of an arch bridge, stone architecture, free to use, no copyright restrictions.
Macombs Dam Bridge, Spanning Harlem River Between 155th Street Viaduct...
Significance: The bridge was designed by eminent structural engineer Alfred Pancoast Boller and was a considerable municipal endeavor as well as a significant engineering feat. It is the third oldest major bri... More
Macombs Dam Bridge, Spanning Harlem River Between 155th Street Viaduct...
Significance: The bridge was designed by eminent structural engineer Alfred Pancoast Boller and was a considerable municipal endeavor as well as a significant engineering feat. It is the third oldest major bri... More
Macombs Dam Bridge, Spanning Harlem River Between 155th Street Viaduct...
Significance: The bridge was designed by eminent structural engineer Alfred Pancoast Boller and was a considerable municipal endeavor as well as a significant engineering feat. It is the third oldest major bri... More
Macombs Dam Bridge, Spanning Harlem River Between 155th Street Viaduct...
Significance: The bridge was designed by eminent structural engineer Alfred Pancoast Boller and was a considerable municipal endeavor as well as a significant engineering feat. It is the third oldest major bri... More
Macombs Dam Bridge, Spanning Harlem River Between 155th Street Viaduct...
Significance: The bridge was designed by eminent structural engineer Alfred Pancoast Boller and was a considerable municipal endeavor as well as a significant engineering feat. It is the third oldest major bri... More
Magnolia Avenue Viaduct, Magnolia Avenue over U.S. Route 1 & 9, Elizab...
Significance: The bridge has been determined eligible for the National Register of Historic Places due to its association with the Route 1 & 9 construction campaign during the 1920s and 1930s. Routes 1 & 9 wer... More
Magnolia Avenue Viaduct, Magnolia Avenue over U.S. Route 1 & 9, Elizab...
Significance: The bridge has been determined eligible for the National Register of Historic Places due to its association with the Route 1 & 9 construction campaign during the 1920s and 1930s. Routes 1 & 9 wer... More
Virginialley Railroad, Folly Mills Creek Viaduct, Interstate 81, Staun...
Significance: The railroad viaduct near Staunton Virginia is an outstanding example of 19th century stone masonry construction. It is a well preserved reminder of the Valley Railroad and stands as a scenic lan... More
East Twenty-third Street Viaduct, Spanning Big Blue River at Mancheste...
Significance: The 23rd Street Viaduct is significant in the areas of Politics/Government and Community Planning and Development. The steel girder structure is an existing example of the 1935 civic improvement ... More
East Twenty-third Street Viaduct, Spanning Big Blue River at Mancheste...
Significance: The 23rd Street Viaduct is significant in the areas of Politics/Government and Community Planning and Development. The steel girder structure is an existing example of the 1935 civic improvement ... More
Historic Columbia River Highway, West Multnomah Falls Viaduct, West of...
Significance: This 400' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line... More
Highland Boulevard Viaduct, Spanning Railroad Tracks on West Highland ...
Significance: The two-span reinforced concrete, arch bridge was designed by the well-known engineer, Claude A.P. Turner. The Neoclassical bridge allowed the extension of Highland Boulevard, one of the city's m... More
Corinth Street Viaduct, Spanning Trinity River at Corinth Street, Dall...
Significance: This major viaduct over the Trinity River in Dallas features the largest steel girders fabricated in Texas at time of its construction. Unprocessed Field note material exists for this structure: ... More
Corinth Street Viaduct, Spanning Trinity River at Corinth Street, Dall...
Significance: This major viaduct over the Trinity River in Dallas features the largest steel girders fabricated in Texas at time of its construction. Unprocessed Field note material exists for this structure: ... More
Mansfield Street Viaduct, Spanning railroad right-of-way R47W, T47N, S...
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.
Mulberry Street Viaduct, Spanning Paxton Creek & Cameron Street (State...
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
Main Street Viaduct, Spanning Trinity River at Main Street, Fort Worth...
Significance: The Main Street Viaduct was the first concrete arch bridge in the United States to employ self-supporting reinforcing steel. Unprocessed Field note material exists for this structure: N558 Surve... More
U.S. Route 78 Bridge (Five Mile Viaduct), U.S. Route 78 spanning CSX R...
Significance: The U.S. Route 78 bridge is identified as Charleston 4 in the South Carolina Department of Transportation's Non-Metal Truss Highway Bridge Inventory. This concrete T-beam bridge has a complex com... More
U.S. Route 78 Bridge (Five Mile Viaduct), U.S. Route 78 spanning CSX R...
Significance: The U.S. Route 78 bridge is identified as Charleston 4 in the South Carolina Department of Transportation's Non-Metal Truss Highway Bridge Inventory. This concrete T-beam bridge has a complex com... More
Fourteenth Street Viaduct, Fourteenth Street at Wazee Street, Denver, ...
Significance: Built in 1898. Of all the multiple-span wagon/tram viaducts built in Denver in the 19th century, only the 14th St. Viaduct remains in use. With its 63 spans of steel stringers, it is the only long... More
Boston & Worcester Railroad, Bogastow Brook Viaduct, Spanning Bogastow...
Significance: The Bogastow Brook Viaduct is a 260 foot long, 8 arch stone viaduct. It carries the tracks of the Boston & Worcester Railroad across Bogastow Brook, and also spanned the tailrace of the Holliston... More
Macy Street Viaduct, Los Angeles, Los Angeles County, CA
Significance: The Cesar Chavez-Macy Street Bridge is designated Los Angeles City Historic-Cultural Monument No. 224, declared August 1, 1979. Bridge designers chose its Spanish Colonial Revival style to commem... More
Lamar-McKinney Street Viaduct, Spanning Trinity River at Continental S...
Significance: A major viaduct over the Trinity River in Dallas, the bridge was one element of a comprehensive levee and viaduct construction plan designed to eliminate the Trinity River as a barrier to transpor... More
Sixth Street Viaduct, Spanning Burlington Northern Railroad & Valley S...
Significance: The Sixth Street Viaduct is actually comprised of two separate structures: a pin-connected Pratt truss built over the tracks of the Chicago, Burlington and Quincy Railroad in 1886 and a girder ove... More
Sixth Street Viaduct, Spanning Burlington Northern Railroad & Valley S...
Significance: The Sixth Street Viaduct is actually comprised of two separate structures: a pin-connected Pratt truss built over the tracks of the Chicago, Burlington and Quincy Railroad in 1886 and a girder ove... More
Sixth Street Viaduct, Spanning Burlington Northern Railroad & Valley S...
Significance: The Sixth Street Viaduct is actually comprised of two separate structures: a pin-connected Pratt truss built over the tracks of the Chicago, Burlington and Quincy Railroad in 1886 and a girder ove... More
Sixth Street Viaduct, Spanning Burlington Northern Railroad & Valley S...
Significance: The Sixth Street Viaduct is actually comprised of two separate structures: a pin-connected Pratt truss built over the tracks of the Chicago, Burlington and Quincy Railroad in 1886 and a girder ove... More
Oakland Avenue Viaduct, Oakland Avenue spanning U.S. Route 62 (State R...
Significance: The bridge is an excellent example of a dual-rib, open-spandrel concrete arch bridge executed in the Stripped Classicism style. The bridge is also an excellent example of design utilizing the plas... More
Ashtabula Viaduct, Spanning Ashtabula River at U.S. Route 20 (Prospect...
Significance: This concrete, open spandrel rib arch viaduct is of engineering significance for its outstanding design feature of a complete separation of the superstructures at the end of each span using only a... More
Glendale-Hyperion Viaduct, Spanning Golden State Freeway (I-5) & Los A...
Significance: Glendale-Hyperion Bridge is significant as one of the twelve Historic bridges over the Los Angeles River determined eligible for the National Register of Historic Places. It has also been designa... More
Glendale-Hyperion Viaduct, Spanning Golden State Freeway (I-5) & Los A...
Significance: Glendale-Hyperion Bridge is significant as one of the twelve Historic bridges over the Los Angeles River determined eligible for the National Register of Historic Places. It has also been designa... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-sec...
STORED OFF SITE AND ON SITE. mchr Significance: The Sloss Company's city furnaces, built in what is now the center of Birmingham, Alabama, in 1881-1882, produced pig iron for the foundry market until their clos... More
Alaskan Way Viaduct and Battery Street Tunnel, Seattle, King County, W...
Significance: The Alaskan Way Viaduct is significant for its double-deck configuration, the first such bridge built in the state of Washington. The structure encompasses two different designs and crosses over ... More
Alaskan Way Viaduct and Battery Street Tunnel, Seattle, King County, W...
Significance: The Alaskan Way Viaduct is significant for its double-deck configuration, the first such bridge built in the state of Washington. The structure encompasses two different designs and crosses over ... More
Alaskan Way Viaduct and Battery Street Tunnel, Seattle, King County, W...
Significance: The Alaskan Way Viaduct is significant for its double-deck configuration, the first such bridge built in the state of Washington. The structure encompasses two different designs and crosses over ... More
Alaskan Way Viaduct and Battery Street Tunnel, Seattle, King County, W...
Significance: The Alaskan Way Viaduct is significant for its double-deck configuration, the first such bridge built in the state of Washington. The structure encompasses two different designs and crosses over ... More
Alaskan Way Viaduct and Battery Street Tunnel, Seattle, King County, W...
Significance: The Alaskan Way Viaduct is significant for its double-deck configuration, the first such bridge built in the state of Washington. The structure encompasses two different designs and crosses over ... More
Alaskan Way Viaduct and Battery Street Tunnel, Seattle, King County, W...
Significance: The Alaskan Way Viaduct is significant for its double-deck configuration, the first such bridge built in the state of Washington. The structure encompasses two different designs and crosses over ... More
Alaskan Way Viaduct and Battery Street Tunnel, Seattle, King County, W...
Significance: The Alaskan Way Viaduct is significant for its double-deck configuration, the first such bridge built in the state of Washington. The structure encompasses two different designs and crosses over ... More
Route 1 Extension, South Street Viaduct, Spanning Conrail & Wheeler Po...
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.
Route 1 Extension, South Street Viaduct, Spanning Conrail & Wheeler Po...
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.
Route 1 Extension, South Street Viaduct, Spanning Conrail & Wheeler Po...
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.
Viaduct bij Groot Bakallan - Drawing. Public domain image.
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
[Ballochmyle Viaduct, Mauchline, Scotland]. Photochrom print, 1880-189...
Historic Sites Public domain photograph - photochrome print, colorized, free to use, no copyright restrictions image - Picryl description
[Gryon, the Grand Viaduct, Vaud, Canton of, Switzerland]
Title from the Detroit Publishing Co., Catalogue J foreign section, Detroit, Mich. : Detroit Publishing Company, 1905. Print no. "17620". Forms part of: Views of Switzerland in the Photochrom print collection.
Vägbro, Västra Götaland, Sverige
Vägbro Public domain photograph of Swedish railroads, train track, free to use, no copyright restrictions image - Picryl description
The River from the viaduct, Cleveland, O[hio]
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.
Byggherre: Byggnadsaktiebolaget Contractor, Stockholm. En närbild av e...
Byggherre: Byggnadsaktiebolaget Contractor, Stockholm. En närbild av en pelare för SJ:s viadukt över Olskrokens bangård.
C. & N.W. Ry. [i.e. Chicago & North Western Railway] viaduct over Des ...
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.
Viadukt i Falköping. Statens Järnvägar, SJ Kd 393.
The Swedish State Railways (Swedish: Statens Järnvägar) or SJ, originally the Royal Railway Board (Swedish: Kungl. Järnvägsstyrelsen), was Swedish government agency responsible for operating the state-owned rai... More
Byggherre: Byggnadsaktiebolaget Contractor, Stockholm. Kvicksundsbron.
Byggherre: Byggnadsaktiebolaget Contractor, Stockholm. Kvicksundsbron. Public domain photograph - Sweden in 20th century, no copyright restrictions image - Picryl description
Vykort med motiv från Karlstad Östra station.
Vykort med motiv från Karlstad Östra station. Public domain image of railroad, railway, 19th-century Sweden, historical photograph, free to use, no copyright restrictions image - Picryl description
Norra permanenta viadukten. Till vänster stationen Göteborg-Tingstad.
Norra permanenta viadukten. Till vänster stationen Göteborg-Tingstad. Public domain image of railroad, railway, 19th-century Sweden, historical photograph, free to use, no copyright restrictions image - Picry... More
Viadukten på linjen mellan Göteborg C och Göteborg-Kville.
Viadukten på linjen mellan Göteborg C och Göteborg-Kville. Public domain image of Swedish railroads works, train yard, workshop, tracks, historical photograph, free to use, no copyright restrictions image - Pi... More
Huvudsta station år 1914. - Steam locomotive, Public domain image
Huvudsta station år 1914. Public domain image of steam locomotive, train, railways, railroad, Sweden, historical photograph, free to use, no copyright restrictions image - Picryl description
Tunnel under Mölndals station byggd 1915
Tunnel under Mölndals station byggd 1915 Public domain image of train car, railroad, railways, Sweden, historical photograph, free to use, no copyright restrictions image - Picryl description
[The viaduct, D. L. & W. at Nicholson, Pennsylvania]
Print shows train crossing Tunkhannock Viaduct, also known as Nicholson Bridge, in Nicholson, Pennsylvania, with street scene below. Title from Beall. Place of creation based on Pennell's residence at the time ... More
Järnvägsviadukten nära Liseberg station i Göteborg.
Järnvägsviadukten nära Liseberg station i Göteborg. Public domain image of steam locomotive, train, railways, railroad, Sweden, historical photograph, free to use, no copyright restrictions image - Picryl description
Persontåg vid Hindås viadukt. Göteborg - Borås Järnvägar, GBJ S 22. Lo...
Persontåg vid Hindås viadukt. Göteborg - Borås Järnvägar, GBJ S 22. Loket tillverkades 1918 av Falun.
Baltimore & Ohio Railroad, Viaduct, Spanning Patapsco River, Ilchester...
Survey number: HABS MD-878 Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Del av bangården med Kung Oscars bro sedd från söder.
Del av bangården med Kung Oscars bro sedd från söder. Public domain image of a car, industrial site, Sweden, historical photograph, free to use, no copyright restrictions image - Picryl description
Värtan bangård inför elektrifieringen.
Värtan bangård inför elektrifieringen. Public domain photograph of a draisine, Swedish railroads, train track, free to use, no copyright restrictions image - Picryl description
Trafikaktiebolaget Grängesberg - Oxelösunds Järnvägar, TGOJ viadukt öv...
Trafikaktiebolaget Grängesberg - Oxelösunds Järnvägar, TGOJ viadukt över SJ vid Flen Public domain photograph of Swedish railroads, train track, free to use, no copyright restrictions image - Picryl description
Vägbro på linjen mellan Söderhamn och Hudiksvall.
Vägbro på linjen mellan Söderhamn och Hudiksvall. Public domain photograph of Swedish railroads, train track, free to use, no copyright restrictions image - Picryl description
Ångkran Statens Järnvägar, SJ A2 "Ånge" och SJ A1 "Nässjö" lyfter till...
The Swedish State Railways (Swedish: Statens Järnvägar) or SJ, originally the Royal Railway Board (Swedish: Kungl. Järnvägsstyrelsen), was Swedish government agency responsible for operating the state-owned rai... More
New Jersey Turnpike. Viaduct at Newark airport II
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.
Vägbro på linjen mellan Söderhamn och Sundsvall C.
Vägbro på linjen mellan Söderhamn och Sundsvall C. Public domain photograph of train tracks, railroad, free to use, no copyright restrictions image - Picryl description
Åtvidabergs station., Svenska Järnvägarna
Åtvidabergs station. Public domain photograph of Swedish railroads, train track, free to use, no copyright restrictions image - Picryl description
Black forest viaduct building. A man standing on top of a stone bridge
Architecture stock photograph: The bridge over the river / A man standing on top of a stone bridge.
A train traveling over a bridge in front of a building Metro light rai...
Stock photo: A train on a track in a city / A train traveling over a bridge in front of a building.
Jefferson Street Viaduct, Spanning Des Moines River at U.S. Highway 63...
Significance: As one of Iowa's most handsomely proportioned highway trusses, the Jefferson Viaduct a continuous Warren deck truss is technologically noteworthy as an uncommon application of deck truss techn... More
Jefferson Street Viaduct, Spanning Des Moines River at U.S. Highway 63...
Significance: As one of Iowa's most handsomely proportioned highway trusses, the Jefferson Viaduct a continuous Warren deck truss is technologically noteworthy as an uncommon application of deck truss techn... More
Baltimore & Ohio Railroad, Tray Run Viaduct, Spanning Tray Run, Rowles...
Significance: The original bridge on this site was designed by Albert Fink and utilized his patented truss type. It was replaced by a wrought iron trestle in 1887. This structure was replaced by a masonry arc... More
Central of Georgia Railway, Bay Street Viaduct, U.S. 17 & Bay Street, ...
Significance: The Bay Street Viaduct is representative of an intact example of an early 20th century viaduct built to span railroad tracks and yards. It is a relatively rare example for an important type of 20... More
Central of Georgia Railway, Bay Street Viaduct, U.S. 17 & Bay Street, ...
Significance: The Bay Street Viaduct is representative of an intact example of an early 20th century viaduct built to span railroad tracks and yards. It is a relatively rare example for an important type of 20... More
Central of Georgia Railway, Bay Street Viaduct, U.S. 17 & Bay Street, ...
Significance: The Bay Street Viaduct is representative of an intact example of an early 20th century viaduct built to span railroad tracks and yards. It is a relatively rare example for an important type of 20... More
Central of Georgia Railway, Bay Street Viaduct, U.S. 17 & Bay Street, ...
Significance: The Bay Street Viaduct is representative of an intact example of an early 20th century viaduct built to span railroad tracks and yards. It is a relatively rare example for an important type of 20... More
Central of Georgia Railway, Bay Street Viaduct, U.S. 17 & Bay Street, ...
Significance: The Bay Street Viaduct is representative of an intact example of an early 20th century viaduct built to span railroad tracks and yards. It is a relatively rare example for an important type of 20... More
Union Station Viaduct, Spanning Gaspee, Francis, Promenade & Canal Str...
Significance: In the late 19th century the city of Providence began filling in its tidal basin and undertook construction of a new Union Station Complex. A viaduct, utilizing a series of box-girder bridges, wa... More
Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista...
Significance: A half-viaduct designed to carry pedestrians around the outer edge of a spiral section of roadway around the top of a 725' promontory on the Historic Columbia River Highway. Ingenious use of rein... More
Hawk Street Viaduct, Albany, Albany County, NY
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.