![]() ![]() Rural roads stand for roads of non-urban character. Vertical clearance stands for the height above the highest point of the travelled way, i.e., the carriageway and part of the shoulders meant for vehicular use, to the lowest point of the overhead structure. Lateral clerance is the distance between the extreme edge of the carriageway to the face of the nearest support whether it is a solid abutment, pier or column. Underpass implies a short passage beneath a grade-separated structure to carry one or more streams of traffic. The following definitions will be applicable for the purpose of this standard : 4.1. For pedestrian subways, another standard is proposd to be issued in due course. Guidance about clearances on cycle subways is contained in IRC: 11-1962 “Recommended Practice for the Design and Layout of Cycle Tracks”. Specific cases of subways meant for the exclusive use of cyclists or pedestrians are, however, not dealt with. The Standard covers both rural and urban roads. It is recommended that these may be followed uniformly on all roads throughout the country. 2.2.ĭesirable practices in this regard are indicated herein. In order that capacity, speed and safety of travel are not affected, the lateral and vertical clearances at underpasses must be adequate. Many times a road has to be taken through an underpass below another road, railway line, pipeline or irrigation facility like aquaduct. Finally, it was approved by the Council in their 82nd meeting held on the 2nd May 1974. Later, it was approved by that Committee in their meeting held at New Delhi on the 31st January and 1st February 1974 and then by the Executive Committee in their meeting held on the 1st May 1974. This Standard was first discussed by the Specifications & Standards Committee in their meeting held at Gandhinagar on the 30th November 1972. STANDARD FOR LATERAL AND VERTICAL CLEARANCES AT UNDERPASSES FOR VEHICULAR TRAFFIC 1. IRC: 54-1974 LATERAL AND VERTICAL CLEARANCES AT UNDERPASSES FOR VEHICULAR TRAFFIC Jai Gyan! END OF PREAMBLE (NOT PART OF THE STANDARD) ![]() Many of these materials are either unavailable or inaccessible in libraries in India, especially in some of the poorer states and this collection seeks to fill a major gap that exists in access to knowledge.įor other collections we curate and more information, please visit the Bharat Ek Khoj page. This item has been posted for non-commercial purposes and facilitates fair dealing usage of academic and research materials for private use including research, for criticism and review of the work or of other works and reproduction by teachers and students in the course of instruction. The purpose of this library is to assist the students and the lifelong learners of India in their pursuit of an education so that they may better their status and their opportunities and to secure for themselves and for others justice, social, economic and political. This library of books, audio, video, and other materials from and about India is curated and maintained by Public Resource. Setchell said more wildlife crossings are planned on major highways throughout the state.LATERAL AND VERTICAL CLEARANCES AT UNDERPASSES FOR VEHICULAR TRAFFIC PREAMBLE (NOT PART OF THE STANDARD) Setchell says they have seen photos of black bears using the crossing.Īlligator Alley has 38 dedicated wildlife crossings through the middle of the Everglades when Interstate 75 was expanded through South Florida in the 1980's. Two wildlife underpasses were built farther east during reconstruction of I-4 several years ago between Orlando and Daytona Beach. "We're expecting to get deer, certainly bobcats, coyotes, possums, raccoons, armadillos," Setchell said, "and hopefully occasionally a Florida black bear and a panther may even eventually cross through there." Once the underpass is completed by the end of next year, 1.5 miles of 10-foot-high fencing will steer wildlife toward the underpass and away from the highway. Last week, Brenda Malloy, chair of the White House Council on Environmental Quality, toured the underpass site along with members of the Florida Wildlife Corridor Foundation. It blocked genetic exchanges between animals and restricted their home ranges. Since the construction of I-4 over 50 years ago, the highway has become a barrier to wildlife movement. ![]() The section was chosen as part of the Florida Wildlife Corridor, which allows wildlife to migrate freely between preserved areas. Florida Department of Transportation FDOT engineer Brent Setchell is second from left, at the site of the underpass construction
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