question: what would be a good road to take on a coast to coast road trip that passes just north of the Sabine River in Texas?
answer: Longview is located in East Texas, where Interstate 20 and U.S. Highways 80 and 259 converge just north of the Sabine River.
context: Title: Sabine Pass Lighthouse
  Passage: The Sabine Pass Lighthouse, or Sabine Pass Light as it was referred to by the United States Coast Guard, is a historic lighthouse, as part of a gulf coast light station, on the Louisiana side of the Sabine River, in Cameron Parish, across from the community of Sabine Pass, Texas.  It was first lit in 1857 and was deactivated by the Coast Guard in 1952.  One of only three built in the United States of similar design, the light was listed on the National Register of Historic Places as "Sabine Pass Lighthouse" in 1981.  It is now abandoned but has long continued to be the subject of preservation efforts.
  Title: Burr Ferry, Louisiana
  Passage: Burr Ferry is an unincorporated community at the junction of LA 8 and LA 111 south, in Vernon Parish, Louisiana, United States.  This is only a couple of miles from the site of the old Burr's Ferry on the Sabine River, at the Texas line.  The Sabine River, at this location, is the site of two listings on the National Register of Historic Places; Burr's Ferry Bridge, and Burr's Ferry Earthworks.
  Title: Adams–Onís Treaty
  Passage: The Adams–Onís Treaty of 1819, also known as the Transcontinental Treaty, the Florida Purchase Treaty, or the Florida Treaty, was a treaty between the United States and Spain in 1819 that ceded Florida to the U.S. and defined the boundary between the U.S. and New Spain.  It settled a standing border dispute between the two countries and was considered a triumph of American diplomacy.  It came in the midst of increasing tensions related to Spain's territorial boundaries in North America against the United States and Great Britain in the aftermath of the American Revolution; and also during the Latin American Wars of Independence.  Florida had become a burden to Spain, which could not afford to send settlers or garrisons.  Madrid decided to cede the territory to the United States through the Adams–Onís Treaty in exchange for settling the boundary dispute along the Sabine River in Spanish Texas.  The treaty established the boundary of U.S. territory and claims through the Rocky Mountains and west to the Pacific Ocean, in exchange for the U.S. paying residents' claims against the Spanish government up to a total of $5,000,000 and relinquishing the US claims on parts of Spanish Texas west of the Sabine River and other Spanish areas, under the terms of the Louisiana Purchase.
  Title: Sabine Pass, Port Arthur, Texas
  Passage: Sabine Pass is a neighborhood in Port Arthur, Texas.  It lies at Sabine Pass, on the west bank of the Sabine River, the border between Louisiana and Texas, and was incorporated in 1861.  It was formally annexed by Port Arthur in 1978, Sabine Pass has its own school district, post office, water district, and port authority.  Police and fire protection is provided by the Port Arthur city government.  The Port Arthur Convention and Visitors Bureau stated that Sabine Pass is "often regarded as" being a "self-contained" community.
  Title: Dennis Freeman
  Passage: Harold Dennis Freeman (April 23, 1940 – November 23, 2007), known as Dennis Freeman, was the mayor of Logansport, a town adjacent to the Sabine River in DeSoto Parish in northwestern Louisiana from 1984 until his death.  His contributions were particularly significant considering the otherwise limited role of a small-town mayor.  For some sixteen years, he worked patiently with highway officials in Louisiana and Texas to construct a new border bridge over the Sabine River, a project nearing fruition.  Freeman also fought to keep the pending Interstate 69 route in western Louisiana closer to Logansport.  He helped to establish the first fire and ambulance districts in DeSoto Parish.
  Title: U.S. Route 80
  Passage: U.S. Route 80 (US 80) is an east–west United States Numbered Highway, much of which was once part of the early auto trail known as the Dixie Overland Highway.  As the "0" in the route number indicates, it was originally a cross-country route, from the Pacific Ocean to the Atlantic Ocean.  However, the entire segment west of Dallas, Texas, has been decommissioned in favor of various Interstate Highways and state highways.  Currently, the highway's western terminus is at an interchange with Interstate 30 (I-30) on the Dallas–Mesquite, Texas city line.  The highway's eastern terminus is in Tybee Island, Georgia, at the intersection of Butler Avenue, Inlet Avenue, and Tybrisa Street, near the Atlantic Ocean.
  Title: Longview, Texas
  Passage: Longview is a city in Gregg and Harrison counties in the U.S. state of Texas.  As of the 2010 census, the population was 80,455.  The estimated population in 2015 was 82,287.  Most of the city is located in Gregg County, of which it is the county seat; a small part extends into the western part of neighboring Harrison County.  Longview is located in East Texas, where Interstate 20 and U.S. Highways 80 and 259 converge just north of the Sabine River.
citations: Longview, Texas U.S. Route 80