英语翻译A goverment study recommended a national highway systerm

英语翻译
A goverment study recommended a national highway systerm of33,920 miles,and congress passed the Federal-Aid Highway Act of 1944,which called for strict,centrakky controlled desert criterra.
The interstate highway system was finally launched in 1956 and has been considered as one of the greatest public works projects of the century .To bulid its 44,000-mile web of highways,bridge.and tunnels hundreds of unique engineering designs and solutions had to be worked out.Consider the many geographic features of the country：mountains,steep grades,wetlands,rivers,desorts and plains.Variables included the slope of the land,and the ability of the pavement to support the load.Innovative designs of roadways,tunnels,bridges,overpasses,and interchanges that could run through or bypass urban areas soon began to weave their way across the country ,forever altering the face of American .
Long-span,segmented-concrete,cable-stayed bridges such as Hale Boggs in Louisiana and the Sunshine Skyway in Florida,and remarkable tunnels like Fort Mchenry in Maryland and Mr.bakerin Washington developed under the nation's physical challenges,Traffic control systems and methods of construction developed uder the interstate program soon influenced highway construction around the world and were invaluable in improving the condition of urban streets and traffic patterns.

一个政府研究报告建议建造一条33920英里的高速公路,国会通过了以严格著称的1944年联邦高速公路救援法案.
各州间的公路系统在1956年被最后敲定,并被认为是20世纪最伟大的公共建设之一.为了建造其长达44000英里的交通网,工程需要成百上千独具风格的建筑设计.考虑到国家的各种地理特征——山脉、悬崖、湿地、河流、沙漠、平原,各种设计包括了地面斜坡和载重人行道的相关设计.对于公路、隧道、桥梁、立交的创意设计很快在整个国家风靡,并长久地改变了美国的面貌.
寿命长的弓形混凝土桥,钢缆斜拉桥（比方说路易斯安那的hale boggs桥以及福罗里达的sunshine skyway桥）,还有如马里兰的fort mchenry或者华盛顿的bakerin这样的地下隧道,在国家巨大物理成就下迅猛发展.在各州间的项目中发展起来的的交通管理系统和建筑工序设计很快影响了全球高速公路的建设和城市交通模式的进步.