Floating bridge construction pdf

Julie meredith sr 520 program director sr 520 bridge replacement and hov program washington state department of transportation 600 stewart street, suite 520 seattle, wa 98101. To learn about how the bridge was constructed, check out our sr 520 floating bridge booklet pdf 6. Floating slabs behave as a barrier for the entrance of the moisture coming from the ground. The 7,710footlong 2,350 m floating span is the longest floating bridge in the world, as well as the worlds widest measuring 116 feet 35 m at its midpoint. Coffer dams can be classified into many types depending upon the depth, soil conditions, and fluctuations in the water level and type of material used. The paper will also explain the advantages of fhwas innovative accelerated bridge construction techniques for floating bridges. Its intent is to establish a basis for the relationship with the contractor and. Floating bridges are uncommon in large part because the kinds of situations and environmental criteria for them are unusual. Worlds longest floating bridge mechanical contractors. Floating bridge, a story about learning to accept the tentative nature of human life, begins with an account about a time when jinny left her husband, neal, briefly to sit in a bus shelter. Concept a global trend has been for quite some time that investors, marina owners and property developers are increasingly looking for floating solutions to expand benefits and functionalities of water front locations. Temporary bridges groundforce bridge is the temporary bridge hire division of groundforce. When the facility is no longer needed to build sr 520 bridge pontoons, wsdot. These bridges are mostly needed to connect heavily populated areas where there is a very wide and very deep body of water, along with extremely soft lake or oceanbottom soil, factors that prohibit conventional bridge piers the structure on which the bridge surface rests.

The new sr 520 floating bridge opened to traffic in april 2016. Improved float bridge ribbon the ribbon bridge is a floating, modular asset with an integral superstructure and floating supports. Repository seattle municipal archives seattle municipal archives. Design concepts and applications for floating docks are applicable for floating bridges. In this report the term floating structures will apply to either a floating bridge or a floating dock. Flexifloat modular barges and driveondriveoff ramp attachments are commonly used to construct floating bridges, piers and docks for moving or supporting heavy equipment loads over. Westbound traffic is carried by the adjacent homer m. The compact 200 c200 system is mabeys most widely used modular bridging product and is available for both permanent and temporary applications. Here, pontoons float out of the casting basin at concrete. Highway floating bridge on lake washington us and in vancouver can. With hov lanes, full shoulders for disabled vehicles, a crosslake bicycle and pedestrian path, and the largest, heaviest, and strongest bridge pontoons ever built, the new, 1. Nov 21, 2016 7 of the coolest bridges in the united states. A floating bridge is one which crosses a river, estuary or lake and is supported by pontoons, instead of fixed permanent supports. The chosen bridge is a proposed crossing of bjornafjorden.

The former permits both translational and rotational movements whereas the latter allow rotational and limited translational movements. Floating concrete can be effectively used for building structures such as slabs, barges, buildings etc. While much anecdotal experience and some documentation exists for the complete freezing of natural crosssections of small streams. Bearing used in the construction of bridge structure is divided into two major categories namely expansion bearings and fixed bearings. Cutting and lifting bridge piecessections when dropping into water is not allowed ex. Engineering department lake washington floating bridge. A submerged floating tunnel sft, also known as submerged floating tube bridge sftb, suspended tunnel, or archimedes bridge, is a proposed design for a tunnel that floats in water, supported by its buoyancy specifically, by employing the hydrostatic thrust, or archimedes principle. The sr 520 floating bridge and landings project designed and built the worlds longest floating bridge, creating a safer, more reliable link between seattle and the growing hightech cities east of lake washington. Simulation and monitoring of floating bridge behaviour. Floating bridges have been used in military operations for.

Fhwa center for innovative finance support project. In many instances, a floating bridge is constructed for temporary use and can be dismantled and transported for reassembly at a different location. The floating portion of the bridge is 7,578 feet approximately 1. Its the longest floating bridge in the world and is slated for replacement by an even bigger and hardier bridge. The buoyancy of the supports limits the maximum load they can carry. Research paper on floating concrete civil engineering. Fhwa center for innovative finance support project profiles. But frivolous fun takes a backseat to the more utilitarian purposes that floating bridges serve. Others are simple woodbased arrangements best for much lighter loads. With a heritage stretching back over 70 years to the original bailey bridge system, the systems extensive use worldwide pays testament to its versatility. The design of floating bridges varies greatly by location and purpose. Establish early in the process a project delivery, procurement, and contracting committee. The first roadway section for the medina section of the bridge was poured.

Some are humungous structures of concrete and steel that can support the almost unimaginable weight inflicted by ceaseless commuter and commercial traffic. Bridge construction manual guidelines to project supervisors bridge engineering page 2 revision. Most pontoon bridges are temporary, used in wartime and civil emergencies. Begin bridge construction on eastern shore of lake washington. Pdf a brief history of floating and movable concrete bridges.

Our temporary bridge structures cater for the construction, transmission, rail and events sectors. Working at great heights, in traffic, through extreme weather, in fast river and ocean currents, and underwater makes bridge construction a perilous way to earn a living. Mar 15, 2017 completed in 2016, the new state route 520 evergreen point floating bridge is the longest floating bridge in the world. The new bridge is designed to withstand sustained winds of 89 mph a 100year. In recent years it has been possible to design floating bridges more scientifically. Floating slab construction applications and advantages. The pontoon construction project is one of several projects that make up the larger corridor. There are several types of bridge bearings which have been employed in. Ribbon bridges and rafts provide the maneuver commander with a reliable and responsive means to cross wet gap obstacles. He chooses a backroad that passes over a floating bridge.

Bridge foundations have to be carefully selected and constructed since. More sympathetic than anyone else has been that day, he offers to drive her home. On august 28, 1963, the evergreen point floating bridge opens after years of planning and bickering. Aug 25, 2016 the improved ribbon bridge irb enables soldiers to cross rivers, lakes, or other bodies of water in the absence of a means of crossing or in the event of an unreliable or damaged permanent. Use of demolition debris may be offered for use by other federal, state, or local government for beneficial use. The original evergreen point floating bridge, also named for state governor albert d. Project overview project news needs and benefits montlake market update project noise variance project design timeline funding project overview the construction now underway for the sr 520 bridge replacement and hov program is the montlake project.

Alice munro is perhaps the most accomplished shortstory writer of her time practicing that often underrated art. The new floating bridge is designed to withstand a 1,000year earthquake event and windstorms up to 89 mph. The improved ribbon bridge irb enables soldiers to cross rivers, lakes, or other bodies of water in the absence of a means of crossing or in the event of an unreliable or damaged permanent. Analysis and design of floating bridges watanabe 2003. Bridge planning, design, and construction is an important function of civil engineering.

The new sr 520 floating bridge spans 2,350 meters 7,710 feet across the deep waters of lake washington and replaces the current, aging floating bridge for the washington state department of transportation wsdot. July 2009 page 3 introduction this document is the project management plan for the sr 520 bridge replacement and hov programs pontoon construction project. Floating docks are far more common than floating trail bridges. Check out the latest wsdot sr 520 floating bridge construction updates by clicking here. Floating slab construction applications and advantages of. Jan 20, 2017 on bridge construction sites today, safety is a top consideration. Making the critical connections how floating bridges work. This is the primary customer portal for robishaw engineerings flexifloat construction system to provide information about the system and access to robishaw application engineers and technical information about the flexifloat construction system.

If a floating bridge is to be constructed, the surveyor determines the. Evergreen point floating bridge opens on august 28, 1963. Fhwahrt11026, geosynthetic reinforced soil integrated bridge system interim implementation guide, june, 2012 and this manual provides excerpts from the reference. The bridge comprise with a total length of 365 metres and a. Description and analysis of floating bridges semantic scholar. The style of floating bridge, typical of munros technique, is an example. The teenage son, ricky, returns to find jinny waiting. Jul 01, 2014 pdf an attempt was made to design a low cost floating house suitable for people in low lying areas such as bangladesh. Read the sr 520 floating bridge online booklet pdf 6. Rosellini bridge, carries washington state route 520 across lake washington from seattle to its eastern suburbs.

Pontoon construction project project management plan part 1. This had made their widespread usage in cold region construction. Construction on the sr 520 floating bridge and landings project began in early 2012, and the new bridge opened to traffic in april 2016. Engineering department lake washington floating bridge construction album dates 19391940 inclusive quantity 0. Pontoon bridges are supported by floating pontoons with sufficient buoyancy to support the bridge and dynamic loads.

Spanning lake washington and connecting seattle on the western side of the lake to medina on the eastern side, the 7,710 foot long bridge replaces the previous 7,578 foot bridge, which was the longest floating. Temporary bridges portable bridge installation for site. The sr 520 floating bridge and landings project replaced the original, 53yearold sr 520 floating bridge as the worlds longest floating bridge. Gantry cranes roll in next to sr 520 floating bridge. Types of cofferdams and their construction details. Pontoons are usually put together near the bridge construction site and then towed into place. The bridge design will be basically determined by the type of bridge, such as the beam bridge or the suspension bridge. The worlds first swing and floating bridge is under construction in the port of osaka.

Jun 12, 20 other sr 520 floating bridge construction updates include the completion of setting the final anchors of the 58 that will hold the new floating bridge in place. Bridge bearings types of bearings for bridge structures. The geotechnical engineering bureau geb provides earthwork and foundation engineering services for the design and construction of departmental projects statewide. Double highway floating bridge in seattle us in the calm and in the storm. Floating bridges 1246m long nordhordland floating bridge built in1994 at salhus over a fjord depth of 500 m. The new span across lake washington opened to traffic in april 2016. Rosellini bridge evergreen point in washington state. The proposed pontoon construction facility, and the finished pontoons it produces, are forwardcompatible with preliminary designs for the planned full replacement of the sr 520 floating bridge.

In early 2012, construction began on the worlds longest floating bridge in seattle, washington. The old sr 520 floating bridge, 7,578 feet long, previously held that record. It acts a barrier between the superstructure and the ground. She surprises herself by leaving with ricky at the wheel of neals van and by not caring what the others might think. Every geographical area is different, so engineers pick a bridge style best suited to each location. August 2010 page 6 construction of additional pontoons needed to accommodate foreseeable improvements to the evergreen point bridge. Image courtesy of lake washington construction management maybe. While pontoon bridges are usually temporary structures, some are used for long periods of time.

Without these wet and wonderful highways, a number of the worlds metropolitan areas would likely have to make do without any sort of bridge at all, which would greatly affect their traffic flow, and population and economies as a whole. There are many types of floating bridges, depending on the conditions of the land and the types of barriers to cross. Other sr 520 floating bridge construction updates include the completion of setting the final anchors of the 58 that will hold the new floating bridge in place. Geotechnical, geological and earthquake engineering, vol 44. A floating bridge is a type of bridge design that makes use of barges or pontoons to create a span across a body of water. Pontoon construction project project management plan. Pontoon construction project project management plan part 2. We offer everything from simple timber bridges to highway rated modular steel panel bridges for access over streams, waterways, wetlands and drainage ditches. The washington state legislature authorized the collection of tolls on the existing floating bridge beginning in december 2011 to help fund and finance the construction of its replacement. Floating solutions and the city page 18 the floating solutions project generates incremental income for the city. When they decide to go with a floating bridge, the pontoons are usually built on shore near the construction site and then towed into place by barges and anchored. Like the worlds longest floating bridge, one of the most timetested construction projects ever, and other wonders of modern engineering.

Floating bridges are made of large watertight concrete pontoons connected rigidly endtoend, upon which the roadway is built. For this purpose, the slab can be insulated for frost or moisture. The floating bridge was one of the vision of sheikh mohammed bin rashid al maktoum and the expertise of the dubai roads and transport authority rta. Waagner biro gulf a subsidiary of waagnerbiro stahlbau ag was awarded the contract to construct the floating bridge. Permanent floating bridges are useful for traversing features lacking strong bedrock for traditional piers. Floating bridge design and construction how floating. Divide construction of the floating bridge into two or more contracts. The floating bridge was one of the vision of sheikh mohammed bin rashid al maktoum and the expertise of the dubai roads and transport authority rta waagner biro gulf a subsidiary of waagnerbiro stahlbau ag was awarded the contract to construct the floating bridge. Analysis and design of floating bridges wiley online library. Sr 520 pontoon construction project completed march 2015. Fender floating tremolo and bridge construction for lutetype musical instruments 2 sheetssheet 1 filed nov.

Sr 520 floating bridge and landings project complete. The evergreen point floating bridge, also known as the 520 bridge and officially the governor albert d. Floating bridge construction using waterfront methods ports. Individual bays are joined to form rafts or bridges in support of river crossing operations. Rosellini, opened on august 28, 1963, carrying the fourlane state route 520 at the time designated temporarily as the evergreen point branch of primary state highway 1 until the 1964 state highway renumbering. Floating bridges flexifloat construction system by. Murrow memorial bridge is in the northwest united states, one of the interstate 90 floating bridges that carries the eastbound lanes of interstate 90 across lake washington from seattle to mercer island, washington. Piers are designed to resist the vertical loads from the superstructure, as well as the horizontal superstructure loads not resisted by the abutments. Pontoon construction project project management plan august 2010 part 2. Us2972923a floating tremolo and bridge construction for.

The first historical records of such bridges date back to the persians and greek where the deck was supported on pigskins or boats. Army engineers build floating bridge multirole bridge. Floating bridges should generally be a structure of last resort, used only for crossing ponds, marshes, swamps, bogs, or similar areas that are too wet for more traditional, less costly trail bridges or for other wetland trail construction techniques. Temporary work pads in the water for placing of equipment must meet guidance on chapter 3 page figure 6. Improves safety the pontoons for the new sr 520 floating bridge improve the bridges safety and reliability. Pdf design and estimation of low cost floating house. A pontoon bridge or ponton bridge, also known as a floating bridge, uses floats or shallow draft boats to support a continuous deck for pedestrian and vehicle travel. Highperformance concrete for a floating bridge transportation. Considering the material used in their construction, cofferdams may be divided into the following categories. April 1996 preface this manual has been prepared to assist the project supervisor in the supervision of bridge construction projects.