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The bridge and torch problem (also known as The Midnight Train [1] and Dangerous crossing [2]) is a logic puzzle that deals with four people, a bridge and a torch. It is in the category of river crossing puzzles , where a number of objects must move across a river, with some constraints.
By way of specifying the logical task unambiguously, solutions involving either reaching an island or mainland bank other than via one of the bridges, or; accessing any bridge without crossing to its other end; are explicitly unacceptable. Euler proved that the problem has no solution.
Well-known river-crossing puzzles include: The fox, goose, and bag of beans puzzle, in which a farmer must transport a fox, goose and bag of beans from one side of a river to another using a boat which can only hold one item in addition to the farmer, subject to the constraints that the fox cannot be left alone with the goose, and the goose cannot be left alone with the beans.
In the Class of 3000 episode "Westley Side Story", Sunny and his students perform a similar exercise involving a chicken, a coyote and a sack of corn. The Between the Lions episode "Farmer Ken's Puzzle" portrays it being made into a computer game with a cat, a hen, and a sack of seeds. Interactive chicken, fox and grain problem.
The original Wells Bridge is a two lane Iron truss Bridge with a "holey deck" that is accessible to pedestrians, only. There are gates at each end of the bridge to prevent vehicle traffic, and the maximum weight is listed as 10 people. County Route 44 Bridge, Hamlet of Wells Bridge (1990s) CR 44: An upstream replacement for the old Iron Truss ...
Since 1999, the bridge at Milepoint 16.3 is the most upstream bridge required by the Code of Federal Regulations to open on request, [16] though no requests have made since 1994. [17] The Lower Hackensack remains partially in use for commercial maritime traffic, notably for sewage sludge for treatment at a facility on the bay. [18]
This is a list of bridges and other crossings of the Connecticut River from its mouth at Long Island Sound upstream to its source at the Connecticut Lakes.The list includes current road and rail crossings, as well as ferries carrying a state highway across the river.
Ayala Bridge II [5] San Miguel, Manila: Carlos Palanca Sr. Street to San Marcelino Street Ermita, Manila Beata–F.Y. Manalo Bridge [5] Santa Ana, Manila: Pandacan, Manila Skyway-NLEX Connector Link Bridge Santa Mesa, Manila Skyway Stage 3 to NLEX Connector (Tomas Claudio Entry/Exit) Paco, Manila F. Blumentritt–Antipolo Bridge [5] Poblacion ...