Question: Where on a map runs what is below the Emlenton Low Level Bridge?

full_context: Document 1: French Creek (Allegheny River tributary): French Creek (also known as the Venango River) is a tributary of the Allegheny River in northwestern Pennsylvania and western New York in the United States.
Document 2: Emlenton Bridge: An interesting fact about the Emlenton Bridge is that due to its size, and geography of the land, is actually located in three different Pennsylvania counties. One side of the bridge is in Venango County, the other in Clarion County, but the southwest abutment resides in Butler County.
Document 3: Cowanshannock Creek: Cowanshannock Creek (the eastern section is sometimes referred to as the North Branch Cowanshannock Creek) is a tributary of the Allegheny River in Armstrong and Indiana counties, Pennsylvania in the United States.
Document 4: Glenwood Bridge: The Glenwood Bridge is a cantilever bridge in Pittsburgh, Pennsylvania, which carries Pennsylvania Route 885 over the Monongahela River. It started construction on June 3, 1958 and was completed in 1966 to replace an old decayed unsafe iron bridge built in 1894 which carried Pittsburgh Railways streetcar tracks and vehicle traffic on a wooden deck.
Document 5: List of crossings of the Monongahela River: This is a complete list of current bridges and other crossings of the Monongahela River starting from Pittsburgh, Pennsylvania, where the river helps to form the headwaters of the Ohio River, and ending in Fairmont, West Virginia, where the West Fork River and Tygart Valley River combine to form the Monongahela.
Document 6: Tionesta Bridge: The Tionesta Bridge is a girder bridge that carries U.S. Route 62 and Pennsylvania Route 36 across the Allegheny River in rural Forest County, Pennsylvania. The borough of Tionesta on the east bank of the river is connected with an unpopulated section of Tionesta Township on the west bank.
Document 7: Pucketa Creek: Pucketa Creek is a tributary of the Allegheny River located in both Allegheny and Westmoreland counties in the U.S. state of Pennsylvania.
Document 8: Belle Vernon Bridge: The Belle Vernon Bridge, also called the Speers Bridge or Speers/Belle Vernon Bridge, carries Interstate 70 across the Monongahela River from Speers east to Rostraver Township in the state of Pennsylvania. Around 1951 it replaced an earlier low-level bridge, which connected Pennsylvania Route 88 via State Street with Pennsylvania Route 906 at the I-70 east ramps, just to the south of the current bridge. The old bridge carried Legislative Route 118 and Pennsylvania Route 71 until those were moved to the new bridge when it opened.
Document 9: Cheat River: The Cheat River is a tributary of the Monongahela River in eastern West Virginia and southwestern Pennsylvania in the United States. Via the Ohio River, the Cheat and Monongahela are part of the Mississippi River watershed. Owing to the ruggedness of the surrounding Allegheny Mountains, the Cheat remains largely remote with few settlements or developments along its banks. Its headwaters are in the Cheat-Potomac Ranger District of the Monongahela National Forest.
Document 10: Deer Creek (Allegheny River tributary): Deer Creek is a tributary of the Allegheny River located in both Allegheny and Butler counties in the U.S. state of Pennsylvania.
Document 11: Emlenton Bridge: The Emlenton Bridge is a steel-deck truss bridge that spans the Allegheny River just south of the town of Emlenton, Pennsylvania, United States at approximately mile marker 44.4 on I-80. With a height of above the river, the Emlenton Bridge was the highest bridge in the Interstate Highway System when completed in 1968 (The Lewiston-Queenston Bridge is higher but is technically an international bridge, not part of the Interstate Highway system). This record was held until 1971 with the opening of the Fred G. Redmon Bridge near Selah, Washington.
Document 12: Brilliant Branch Railroad Bridge: The Brilliant Branch Railroad Bridge is a truss bridge that carries Allegheny Valley Railroad's Brilliant Branch across the Allegheny River between the Pittsburgh neighborhood of Highland Park and Aspinwall, Pennsylvania.
Document 13: Allegheny River: 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.
Document 14: Emlenton Low Level Bridge: The Emlenton Low Level Bridge is a girder bridge that spans the Allegheny River at Emlenton in the U.S state of Pennsylvania. It connects two separate portions of the borough in Venango and Clarion counties. It replaced, an 1883 truss bridge that stood just upstream, which replaced several previous wooden structures; the modern bridge was constructed in 1987. This bridge is dwarfed by its more famous nearby cousin, the 1968 Emlenton Bridge along Interstate 80.
Document 15: 30th Street Bridge: The 30th Street Bridge, is a girder bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhoods of Troy Hill and Herrs Island (known by the moniker of Washington's Landing). This is the fourth bridge that has stood on this site. A wooden 19th Century bridge was washed away during an 1882 flood. This was replaced by an arch bridge that spanned the entire width of the Allegheny River; after a 1921 fire destroyed the span across the main channel, the 31st Street Bridge was constructed as a replacement, and this bridge was again relegated to taking traffic to Herrs Island. A 1939 truss bridge then stood on this site, and it was replaced by the current structure as part of the redevelopment of the island to feature condominiums and a business park instead of warehouses and stockyards.
ground_truth: Eastern United States
sub_queries: Emlenton Low Level Bridge >> crosses Answer: Allegheny River
where is Allegheny River located on a map Answer: Eastern United States