Question: What type of water transportation system did both the Rapidan Dam Canal of the Rappahannock Navigation and the Main Line of Public Works work to establish?
Context: The Main Line of Public Works was a package of legislation supporting a vision passed in 1826 — a collection of various long proposed canal and road projects that became a canal system (1824 proposals and studies) and later added railroads (amendments in 1828) designed to cross the breadth of Pennsylvania (mainly, southern) with the visionary goal of providing the best commercial means of transportation between Philadelphia and Pittsburgh.  Built between 1826 and 1834 by the Commonwealth of Pennsylvania, it established the Pennsylvania Canal System, the Allegheny Portage Railroad, and the Pennsylvania Canal System administrated under a new Commission. Pennsylvania Canal "(or sometimes Pennsylvania Canal system)" refers generally to a complex system of transportation infrastructure improvements including canals, dams, locks, tow paths, aqueducts, and viaducts.  The Canal and Works were constructed and assembled over several decades beginning in 1824, the year of the first enabling act and budget items.  It should be understood the "first use of any railway" in North America was the year 1826, so the newspapers and the Pennsylvania Assembly of 1824 applied the term then to the proposed Right of ways mainly for the canals of the Main Line of Public Works to be built across the southern part of Pennsylvania.  Enacted before Railroads gestated during their infancy, the focus of the act was to create through building a canal system, the capability to ship heavy or bulk goods and connect Philadelphia to Pittsburgh—and "more importantly"—and "beyond" to the "new growth markets" in the developing territories reached by the Ohio River now called the midwest.  Later, when updated in 1837 to reflect the experience of twelve years of toddler-railways, the term was also applied to railroads and new canals to be added to the state transportation system.  As a crowning achievement, the Main Line of Public Works and the Pennsylvania Canal system topped 2100 ft in elevation by erecting the Allegheny Portage Railroad, which used a system of five inclines and five planes on each side of the Eastern Continental Divide at Cresson Pass in Cambria County to actually haul wheeled flat cars, which had halved canal boats placed on them, up and over the Allegheny Front and connect Pittsburgh to the Susquehanna.  When finished in 1834 the trip from Philadelphia to Pittsburgh could be made in 3–5 days, weather conditions depending. The Black Rock Dam is a low head dam in the Schuylkill River.  Originally constructed as a stone filled, timber crib dam in the early 19th century by the Schuylkill Navigation Company, the dam was one of dozens built to create a slack water pools for the Schuylkill Navigation System.  The dam is a contributing property of the "Schuylkill Navigation Canal, Oakes Reach Section" registered historic district.  The dam is located between Phoenixville and Mont Clare in southeastern Pennsylvania, USA. The North Branch Division of the Pennsylvania Canal was a historic waterway that ran 169 mi along the North Branch Susquehanna River between southern New York and north-central Pennsylvania in the United States.  At its southern end, the canal connected with the West Branch Canal and the Susquehanna Division Canal at Northumberland, while on the north it connected with the Junction Canal and the New York canal system.  Built between 1828 and 1856, the North Branch Canal was part of a large transportation network that included Pennsylvania's Main Line of Public Works. The Rapidan Dam Canal of the Rappahannock Navigation is a canal intended to safely carry Batteaus, sturdy flat-bottomed boats used primarily for transporting cargo, around the rapids at the confluence of the Rappahannock and Rapidan Rivers.  The Rapidan Canal, funded and constructed by The Rappahannock Company, consists of two different canals (the Old Rapidan Canal and the Rapidan Canal) built at different times.  All of the Rappahannock Navigation, of which the Rapidan Canal is a part, is located in the Piedmont region of Virginia.  The Confluence, the name used on maps of the day and sometimes maps of today to denote where the two rivers meet, is located where the borders of the Virginia Counties of Spotsylvania, Stafford and Culpeper meet but is owned by the City of Fredericksburg, Virginia.  The Rapidan Canal was listed on the Virginia Landmarks Register (VLR) on June 19, 1973, and on the National Register of Historic Places on July 26, 1973. The Susquehanna Canal of the Pennsylvania Canal System was funded and authorized as part of the 1826 Main Line of Public Works enabling act, and would later become the Susquehanna Division of the Pennsylvania Canal under the Pennsylvania Canal Commission.  Constructed early on in America's brief canal age, it formed an integral segment of the water focused transportation system which cut Philadelphia-Pittsburgh (pre-railroad) travel time from nearly a month to just four days.  One of the system's navigations, the Susquehanna Canal/division created a mule-towed navigable channel 41 mi along the west bank of the main stem of the Susquehanna River between a lock terminus near the mouth of the Juniata Tributary River and the canal basin at Northumberland.  Meeting the West Branch Canal and the North Branch Canal at Northumberland, it formed a link between the public and private canals upriver and the main east–west Pennsylvania Canal route known as the Main Line of Public Works which was devised to connect Philadelphia to Pittsburgh, southern New York, northern Pennsylvania and Lake Erie using most of the far reaches of the Susquehanna's tributaries. The Delaware Division of the Pennsylvania Canal, more commonly called the Delaware Canal, runs for 60 mi parallel to the right bank of the Delaware River from the entry locks near the mouth of the Lehigh River and terminal end of the Lehigh Canal at Easton south to Bristol.  At Easton, which today is the home of The National Canal Museum, the Delaware Canal also connected with the Morris Canal built to carry anthracite coal to energy starved New Jersey industries.  Later, with a crossing-lock constructed at New Hope, the New Hope 'outlet lock' (1847) connected by Cable Ferry to a feeder navigation/canal at Bull's Island along the opposite shore from Lumberville, which ran over 22 mi south along the left bank through Trenton to Bordentown, the west end of the Delaware and Raritan Canal (1834) to New York City via New Brunswick.  as part of the solution to the United States' first energy crisis.  The Commonwealth of Pennsylvania built the Delaware canal to feed anthracite stone coal to energy-hungry Philadelphia as part of its transportation infrastructure building plan known as the Main Line of Public Works—a legislative initiative creating a collection of self-reinforcing internal improvements to commercial transportation capabilities. The Chenango Canal was a towpath canal built and operated in the mid-19th century in Upstate New York in the United States.  It was 97 miles long and for much of its course followed the Chenango River, along Rt. 12 N-S from Binghamton on the south end to Utica on the north end.  It operated from 1834 to 1878 and provided a significant link in the water transportation system of the northeastern U.S., connecting the Susquehanna River to the Erie Canal. Ohashi Dam (Japanese: 大橋ダム ) is a dam built on the Yoshino River in Agawa District, Kōchi Prefecture of Japan.  This concrete dam 73.5m high.  It is a hydroelectric dam of the Shikoku Electric Power Company.  It supplies water to the company's hydroelectric plant, Ohashi Power Station, which can produce up to 5,500kW.  It is the lower reservoir for a pumped-storage hydroelectric plant.  The upper reservoir being Inamura Dam.  Water flowing between these two can produce up to 615MW.  It is a public works which The Japan Society of Civil Engineers has recommended as a site of Public Works Heritage. The office of Superintendent of Public Works was created by an 1876 amendment to the New York State Constitution.  It abolished the canal commissioners and established that the Department of Public Works execute all laws relating to canal maintenance and navigation except for those functions performed by the New York State Engineer and Surveyor who continued to prepare maps, plans and estimates for canal construction and improvement.  The Canal Board (now consisting of the Superintendent of Public Works, the State Engineer and Surveyor, and the Commissioners of the Canal Fund) continued to handle hiring of employees and other personnel matters.  The Barge Canal Law of 1903 (Chapter 147) directed the Canal Board to oversee the enlargement of and improvements to the Erie Canal, the Champlain Canal and the Oswego Canal.  In 1967, the Department of Public Works was merged with other departments into the new New York State Department of Transportation.
Answer: Canal