[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-432796-105":59,"doc-detail-432796-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","bridges-are-not-all-alike-bridge-guide","Bridges Are Not All Alike - Bridge Guide","","A children’s informational text explains why bridges matter, how different materials shape bridge design, and how bridges evolved from simple logs and rope crossings to durable stone and then iron structures. It describes the human need to cross rivers and valleys, introduces famous bridges such as the Golden Gate and Mackinac, and highlights how bridges are planned to fit local conditions like tides and storms. Facts are presented in clear, accessible sections.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":10,"@type":76,"position":81},"https://docshare.wps.com/document/story-novel/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/bridges-are-not-all-alike-bridge-guide/432796/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/bridges-are-not-all-alike-bridge-guide/432796.png","ImageObject",300,407,{"name":92,"@type":93},"ahduag","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-18","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why do people build bridges?","Question",{"text":112,"@type":113},"People need bridges to cross rivers and valleys. Bridges also connect places, save travel time, and can help people reach new destinations.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How did bridge building change over time?",{"text":117,"@type":113},"Early bridges used logs or rope stretched across a stream. Later, people built stone or wood bridges, and then iron bridges when trains became heavy and required stronger support.",{"name":119,"@type":110,"acceptedAnswer":120},"What planning is needed to build a big bridge?",{"text":121,"@type":113},"No two bridges are alike because each must fit the specific place. Designers consider local conditions such as tides and storms before the crew starts assembling parts.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},432796,1791518997,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":8,"category_name":10,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},3985747870414,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","※必凶BigBridgesby Elizabeth West※※X※※HOUGHTON MIFFLIN  \nby Elizabeth West  \n201  \nHOUGHTON MIFFLIN HARCOURTSchool Publishers  \nILLUSTRATION CREDIT:McEntee Design and Art  \nPHOTOGRAPHY CREDITS:Cover ◎Owaki-Kulla/CORBIS.1◎PhotoDisc.2 Photo by Rutahsa Adventures  \nwww.rutahsa.com.3 ◎ Roland Gerth/zefa/Corbis.4 Thomas L.French Jr.,Columbus,Georgia.4-5◎PhotoDisc.  \n5◎CORBIS.6-7 ◎ PhotoDisc.7 ◎Wolfgang Kaehler/CORBIS.8◎Owaki-Kulla/CORBIS.8-9◎PhotoDisc.9 RichardT.  \nNowitz/National Geographid/Getty Images.10 Peter J.Eckel/Time Life Pictures/Getty Images.10-11◎PhotoDisc.  \nCopyright Oby Houghton Miflin Harcourt Publishing Company  \nAll rights reserved.No part of this work may be reproduced or transmitted in any form or by any means,electronic ormechanical,including photocopying or recording,or by any information storage and retrieval system,without the priorwritten permission of the copyright owner unless such copying is expressly permitted by federal copyright law.Requestsfor permission to make copies of any part of the work should be addressed to Houghton Mifflin Harcourt School Publishers,Attn:Permissions,6277 Sea Harbor Drive,Orlando,Florida 32887-6777.  \nPrinted in China  \nISBN-13:978-0-547-02126-3  \nISBN-10:0-547-02126-7  \n23456780940181716151413121110  \n\n| If you have received these materials as examination copies free of charge,Houghton Mifflin Harcourt School Publishers  \u003Cbr>retains title to the materials and they may not be resold.Resale of examination copies is strictly prohibited.   |\n| --- |\n\n\n| Possession of this publication in print format does not entitle users to convert this publication,or any portion of it,into  \u003Cbr>electronic format.   |\n| --- |\n\n# Bridges Are Not All Alike\n\nWhen a new bridge is built,  \nexcitement fills the air.Why?Everybridge changes lives.Bridges let peoplego new places.Bridges save travel time.  \nBridges can be small or big.Theycan be wood,stone,iron,or steel.  \nLong ago,people made bridges out of rope.  \nSome stone bridges built long ago arestill used today.  \n# Why Build a Bridge?\n\nPeople need bridges.They use themto cross rivers and valleys.  \nLong ago,bridges were very simple.People would stretch a log across a  \nstream.Then they could cross,balancingcarefully as they went.  \nNext,people built stone or wood  \nbridges.These bridges lasted longer,andthey were safer,too.  \n3  \nThen people started building  \nrailroads.Railroads could carry goods.They could also take people from placeto place.  \nTrains needed to cross bridges.  \nBut trains are very heavy,and the bridgesweren’t strong enough to hold them.So people began to build new bridgesout of iron.Iron bridges were big andstrong enough to hold the trains.  \nHorace King helpedbuild more than100 bridges in andaround Georgia.  \nWorkers have to work high above the ground.  \n# Building Big Bridges\n\nBuilding a big bridge is a huge job.A crew of workers builds it.But firstsomeone must plan the bridge.No twobridges are alike because each bridgeneeds to fit a different kind of place.One place might have a very high tide,and another might have bad storms.  \n5  \nNext,a crew starts making the bridgeparts.They join sheets of steel,smoothedges,and paint parts.Finally,it's time toput the bridge together.  \nSome states have a lot of bridges.The UnitedStates has almost 600,000 bridges.  \n# Famous Bridges\n\nThe Golden Gate Bridge,California  \nFor years,this was the longest bridgeof its kind.Its deck,or road,is highabove the water.This lets even largeships sail into San Francisco Bay.Onfoggy days,the tops of the tall bridgetowers disappear.  \nThe bridge is orange.Its paint keeps the steelsafe from the salty air.  \nThe Mackinac Bridge,Michigan  \nMichigan has two parts  \ndivided by water.Once,peoplehad to take a ferry from one partto the other.Now they can driveacross this bridge.It's a longone—five miles long,in fact!  \nPeople call this bridge the Mighty Mac.","cbCainMGOcJFXEZD","https://ap.wps.com/l/cbCainMGOcJFXEZD","pdf",2595360,16,"English","# Bridges Are Not All Alike\n## Why Build a Bridge?\n## Building Big Bridges\n## Famous Bridges","[{\"question\":\"Why do people build bridges?\",\"answer\":\"People need bridges to cross rivers and valleys. Bridges also connect places, save travel time, and can help people reach new destinations.\"},{\"question\":\"How did bridge building change over time?\",\"answer\":\"Early bridges used logs or rope stretched across a stream. Later, people built stone or wood bridges, and then iron bridges when trains became heavy and required stronger support.\"},{\"question\":\"What planning is needed to build a big bridge?\",\"answer\":\"No two bridges are alike because each must fit the specific place. Designers consider local conditions such as tides and storms before the crew starts assembling parts.\"}]","Bridges Are Not All Alike - Bridge Guide | PDF",1790661345,25]