paragraph_text: The Pretoria Bridge is a vertical-lift bridge in Ottawa, Ontario, Canada. It crosses the Rideau Canal linking the Glebe and Centretown to Old Ottawa East. The bridge was built in 1915, replacing an earlier wooden swing bridge on Argyle Street just to the north. It is a vertical-lift bridge, meaning that the central portion of the bridge can be elevated to allow boats to pass underneath.

paragraph_text: Brooklyn Bridge The Brooklyn Bridge, viewed from Manhattan Coordinates 40 ° 42 ′ 20 ''N 73 ° 59 ′ 47'' W ﻿ / ﻿ 40.70569 ° N 73.99639 ° W ﻿ / 40.70569; - 73.99639 Coordinates: 40 ° 42 ′ 20 ''N 73 ° 59 ′ 47'' W ﻿ / ﻿ 40.70569 ° N 73.99639 ° W ﻿ / 40.70569; - 73.99639 Carries 6 lanes of roadway (cars only) Elevated trains (until 1944) Streetcars (until 1950) Pedestrians and bicycles Crosses East River Locale New York City (Civic Center, Manhattan -- Dumbo / Brooklyn Heights, Brooklyn) Maintained by New York City Department of Transportation ID number 22400119 Characteristics Design Suspension / Cable - stay Hybrid Total length 5,989 ft (1,825.4 m) Width 85 ft (25.9 m) Height 276.5 ft (84.3 m) above mean high water Longest span 1,595.5 ft (486.3 m) Clearance below 135 ft (41.1 m) History Designer John Augustus Roebling Opened May 24, 1883; 134 years ago (1883 - 05 - 24) Statistics Daily traffic 123,781 (2008) Toll Free both ways Brooklyn Bridge U.S. National Register of Historic Places U.S. National Historic Landmark NYC Landmark Built 1869 - 1883 Architectural style neo-Gothic NRHP reference # 66000523 Significant dates Added to NRHP October 15, 1966 Designated NHL January 29, 1964 Designated NYCL August 24, 1967 Brooklyn Bridge Location in Lower Manhattan Brooklyn Bridge Location in Lower Manhattan Brooklyn Bridge Location in Lower Manhattan Brooklyn Bridge Location in Lower Manhattan Show map of Lower Manhattan Show map of New York City Show map of New York Show map of the US Show all

paragraph_text: Bridge Tender's House is a public artwork by American artist Mikyoung Kim, located on the 14th Street Bridge in Washington, D.C., United States. "Bridge Tender's House" was commissioned through DC Commission on the Arts and Humanities.

paragraph_text: The William A. Jones Memorial Bridge is a bridge that spans the Pasig River in the Philippines connecting the Manila area of Binondo on Rosario Street ("Calle Rosario", now Quintin Paredes Street), with the center of city in Ermita. The previous bridge that connected the two areas was the Puente Grande (Great Bridge), later called the Puente de España (Bridge of Spain) located one block upriver on Nueva Street ("Calle Nueva", now E. T. Yuchengco Street). That span was considered as the oldest established in the Philippines.

paragraph_text: The Allegheny River (/ ˌæləˈɡeɪni / AL - ə - GAY - nee) 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. The Allegheny River is, by volume, the main headstream of the Ohio River.

paragraph_text: The John Basilone Veterans Memorial Bridge is a bridge in New Jersey that crosses the Raritan River. The bridge was built in 2005 to replace the smaller Nevius Street Bridge built in 1886. The Nevius Street Bridge today functions as a pedestrian bridge. The bridge connects First Avenue and what used to be the short one way block of Lyman Street in Raritan with River Road in Hillsborough. After crossing into Hillsborough, the road curves to meet up with the old alignment with the Nevius Street Bridge. The bridge is named for local World War II hero, John Basilone. The bridge has a pedestrian tunnel underneath its northern approach, as part of the Raritan River Greenway.

paragraph_text: Spring Garden Street Bridge is a highway bridge in Philadelphia, Pennsylvania, USA, that crosses the Schuylkill River below Fairmount Dam. It connects West Philadelphia to the Philadelphia Museum of Art and Benjamin Franklin Parkway. It is the fourth bridge at this location.

paragraph_text: The Mill Street Stone Arch Bridge is located on that street in Pine Hill, New York, United States. It is a small bridge over a local creek built around the turn of the 20th century. It is one of two stone arch bridges in the former village built by local stonemason Matthew G. Thompson. It has remained intact and in use since then, and was listed on the National Register of Historic Places in 1996. It is located in the Pine Hill Historic District.

paragraph_text: PATH A PATH train of PA - 5 cars on the Newark -- World Trade Center line, crossing the Passaic River en route to the World Trade Center Overview Owner Port Authority of New York and New Jersey Locale Newark / Hudson County, New Jersey and Manhattan, New York Transit type Rapid transit Number of lines Number of stations 13 (1 planned for the PATH extension to Newark in 2018) Daily ridership 270,016 (2016) Annual ridership 76,565,452 (2015) Operation Began operation February 25, 1908 Operator (s) Port Authority Trans - Hudson Technical System length 13.8 mi (22.2 km) Track gauge 4 ft 8 ⁄ in (1,435 mm) standard gauge Electrification 600 V (DC) Third Rail (hide) System map Legend 33rd Street 28th Street closed 23rd Street 19th Street closed 14th Street unbuilt branch to Astor Place 9th Street Christopher Street Hudson Terminal closed World Trade Center Uptown and Downtown Hudson Tubes under Hudson River NY NJ Exchange Place Newport Grove Street Hoboken Terminal Waldo Yard Journal Square PATH Lift Bridge over Hackensack River Manhattan Transfer closed Harrison Car Maintenance Facility Harrison Centre Street Bridge │ Dock Bridge over Passaic River Park Place closed Newark Penn Station This diagram: view talk edit

paragraph_text: Speakman No. 1 is a historic wooden covered bridge located at East Fallowfield Township near Modena in Chester County, Pennsylvania. It is a Burr Truss bridge, constructed in 1881. It is a twin of Speakman No. 2, Mary Ann Pyle Bridge, located a 1/4 mile away. It crosses Buck Run.

paragraph_text: The George Rogers Clark Memorial Bridge, known locally as the Second Street Bridge, is a four-lane cantilevered truss bridge crossing the Ohio River between Louisville, Kentucky and Jeffersonville, Indiana, that carries US 31.

paragraph_text: Opened on June 3, 1939, the original bridge in this location was designed by engineering firm Madigan-Hyland and built on behalf of the New York City Parkway Authority by contractor J. Rich Steers, Inc., before the authority was merged into the Triborough Bridge and Tunnel Authority. The bridge was a part of a program to develop Jamaica Bay as a recreational area instead of an industrial port. The 1939 bridge was a low-level bascule bridge. It consisted of a widened version of the previous drawbridge, and a grade-separated interchange complex feeding into Beach Channel Drive and the Cross Bay Parkway. The Cross Bay Parkway was extended south along Beach 94th Street and Beach 95th Street to the Shore Front Parkway along Rockaway Beach.

paragraph_text: The William Raymond Prom Memorial Bridge, commonly known as 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, Washington's Landing, which is connected to the mainland by the 30th Street Bridge. Sidewalks along the bridge feature viewing platforms.

paragraph_text: The Franklin–Orleans Street Bridge, commonly known as the Franklin Street Bridge, is a bascule bridge over the Chicago River, in Chicago, Illinois, United States. It was built in October 1920, and is located directly southwest of the Merchandise Mart. Connecting the Near North Side with "The Loop," is at the junction of the branches of the river, lying directly west of the Wells Street Bridge. It carries four lanes of traffic in the northbound direction, and sidewalks are available on both sides of the bridge.

paragraph_text: The Eudora Kaw River Bridge is an automobile and pedestrian crossing of the Kansas River located just north of Eudora, Kansas. A girder bridge, it is the first bridge over the river for almost four miles, as the Highway 2 Bridge is far off to the east.

paragraph_text: The Gordie Howe International Bridge (), previously known during development as the Detroit River International Crossing and the New International Trade Crossing, is a project to build a cable-stayed bridge and border crossing across the Detroit River. The crossing will connect Detroit and Windsor by linking Interstate 75 and Interstate 96 in Michigan with the new extension of Highway 401 (called the Rt. Hon. Herb Gray Parkway) in Ontario. This route will provide uninterrupted traffic flow, as opposed to the current configuration with the nearby Ambassador Bridge, which connects to city streets on the Ontario side. The bridge will be named after Canadian ice hockey player Gordie Howe, who was best known for his tenure with the Detroit Red Wings of the National Hockey League.

paragraph_text: The Brady Street Bridge, also known as the South 22nd Street Bridge, was a steel bowstring arch bridge in Pittsburgh, Pennsylvania, which crossed over the Monongahela River at South 22nd Street. It was replaced by the Birmingham Bridge in 1976, and was demolished on May 29, 1978. The bridge's main span was a tied arch with a suspended road deck, with two through-truss side spans, carrying two traffic lanes between Brady Street on the Pittsburgh side and South 22nd Street on the south side. Approach viaducts were built at either end. The bridge was built by the Schultz Bridge and Iron Company.

paragraph_text: The Sheely Bridge, originally known as the Carbondale Bridge, carries pedestrian traffic across the Roaring Fork River at Mill Street Park in Aspen, Colorado, United States. It is a short steel truss bridge originally located downstream in Carbondale and later moved to its present location.

paragraph_text: Pont de Vieille-Brioude (Vieille-Brioude Bridge) is located in France, crossing the Allier River. It is a masonry arch bridge with a span of that was built in 1832.

paragraph_text: 155th Street starts on the West Side at Riverside Drive, crossing Broadway, Amsterdam Avenue and St. Nicholas Avenue. At St. Nicholas Place, the terrain drops off steeply, and 155th Street is carried on a 1,600-foot (490 m) long viaduct, a City Landmark constructed in 1893, that slopes down towards the Harlem River, continuing onto the Macombs Dam Bridge, crossing over (but not intersecting with) the Harlem River Drive. A separate, unconnected section of 155th Street runs under the viaduct, connecting Bradhurst Avenue and the Harlem River Drive.

Question: In what region of the U.S. is the river spanned by the 31st Street Bridge in Pittsburgh?
Answer: Eastern United States