© Metro Gold Line Foothill Extension Construction Authority

(三)地铁金线山麓扩建工程监督

架构师提供的文本描述。金线大桥是一座584英尺长的桥，横跨加利福尼亚州阿卡迪亚的东行I-210高速公路。这座耗资1，860万美元的双轨大桥是从帕萨迪纳到阿祖萨的11.5英里长的地铁金线山脚延伸轻轨项目的第一个组成部分，为帕萨迪纳市现有的塞拉·马德雷山庄站和未来的阿卡迪亚站提供了连接。

Text description provided by the architects. The Gold Line Bridge is a 584-linear-foot bridge stretching diagonally across the Eastbound I-210 Freeway in Arcadia, California. The $18.6 million dual track bridge is the first element of the 11.5-mile Metro Gold Line Foothill Extension (Foothill Extension) light rail project from Pasadena to Azusa to be completed, providing connection between the existing Sierra Madre Villa Station in the city of Pasadena and the future Arcadia Station.

 © Metro Gold Line Foothill Extension Construction Authority

(三)地铁金线山麓扩建工程监督

该山脚支线由地铁黄金线山麓延伸建筑管理局(建筑管理局)监督，该管理局是一个独立的运输机构，负责项目的规划、设计和施工。建筑管理局，在获奖的公共艺术家安德鲁莱斯特的帮助下，把金线大桥想象成过去和现在社会的一个难忘的表达。莱斯特先生是通过建筑管理局于2009年启动的竞争性全国呼叫程序选定的。

The Foothill Extension is overseen by the Metro Gold Line Foothill Extension Construction Authority (Construction Authority), an independent transportation agency responsible for the project’s planning, design and construction. The Construction Authority, with the help of award-winning public artist Andrew Leicester, envisioned the Gold Line Bridge as a memorable expression of the community, past and present. Mr. Leicester was selected through a competitive national call process which the Construction Authority initiated in 2009. 

 © Metro Gold Line Foothill Extension Construction Authority

(三)地铁金线山麓扩建工程监督

建筑管理局在承包商和建筑师之前聘请莱斯特先生担任设计概念顾问，重新设想基础设施项目的设计过程。这种开创性的合作导致了一座雕塑桥的诞生，这座桥的建造成本可以与最初估计的一个典型结构的成本相同。

The Construction Authority hired Mr. Leicester as the Design Concept Advisor before the contractor and architect, re-imagining the design process for infrastructure projects. This ground-breaking collaboration resulted in the creation of a sculptural bridge, which could be built for the same cost as was originally estimated for a typical structure of its make-up. 

斯堪斯卡美国土木公司(斯堪斯卡)是该国最大的总承包商和建筑经理之一，正在建造这座桥。该公司聘请了总部位于洛杉矶的AECOM，作为该项目的建筑和工程负责人，并将建筑管理局的愿景变成了一个可建造的现实。

Skanska USA Civil (Skanska), one of the largest general contractors and construction managers in the country, is building the bridge. The company hired Los Angeles-based AECOM, to be the project’s architectural and engineering lead, and turn the Construction Authority’s vision into a constructible reality. 

 Pencil Rendering

铅笔绘制

设计理念是由获奖的公共艺术家安德鲁·莱斯特(AndrewLeicester)提出的，他在美国各地完成了数件大规模的公共艺术作品。他的桥梁设计灵感来自当地的土著人民和野生动物，以及66号公路的路旁景点和超大的建筑地标。这些灵感渗透到结构的所有元素中。最值得注意的是两个25英尺高，直径17英尺的雕塑篮子，两侧的主上层建筑，视觉上连接在一起的浮雕图案的外梁。上层建筑的蛇形主桥下腹有铸造的沟槽和舱口，模拟了西方响尾蛇身上的图案，并隐喻地引用了交通系统的连通性。

Design Concept The design concept was developed by award-winning public artist, Andrew Leicester who has completed several large scale public art works throughout the United States. His bridge design was inspired by the local indigenous peoples and wildlife, as well as the roadside attractions of Route 66 with its oversized architectural landmarks. These inspirations permeate all elements of the structure. Most notable are the two 25-foot tall, 17-foot diameter sculptural baskets flanking the sides of the main superstructure, tied together visually by the relief-pattern on the outrigger beam. The superstructure’s serpentine main underbelly of the bridge contains casted grooves and hatch marks which simulate the patterns found on the Western Diamondback snake and metaphorically reference the connectivity of the transit system.  

 © Metro Gold Line Foothill Extension Construction Authority

(三)地铁金线山麓扩建工程监督

事实/细节，复杂的图案编织在外梁和肋图案在上层建筑是由手工制作的木模与橡胶模板。模板用作浇筑混凝土的模子。一旦移除，结构表面的复杂图案就被揭示出来。

Facts/Details The complex patterns of weaving on the outrigger beam and ribbed pattern on the superstructure were created using hand-crafted wood formwork with rubber formliners. The formwork acted as a mold into which concrete was poured. Once removed, the intricate patterns on the surface of the structures were revealed. 

每个编织篮由60个单独的预铸段组成。每个篮子顶部还有16根芦苇，高度从2英尺到10英尺不等。所有的预铸定制件都是由加利福尼亚Gardena的月光模子制造的。组织部分有六英尺长，每个重900磅。篮子的预铸段是由一种独特的集料组成的，专门为金线桥而开发。混凝土混合含有黑色的石头，以及清晰，灰色和镜面玻璃，以提供一个微妙的反射质量的材料，以响应当地的大气条件。

Each woven basket is comprised of 60 individually pre-cast segments. Each basket also has 16 reeds at the top which range from two to ten feet in height. All pre-cast custom pieces were fabricated by Moonlight Molds in Gardena, California. The weave sections are six feet long and weigh 900 pounds each. The pre-cast segments for the basket are made of a unique aggregate mix developed specifically for the Gold Line Bridge. The concrete blend contains black stone, as well as clear, grey and mirrored glass to provide a subtle reflective quality to the material which responds to the atmospheric conditions of the site. 

 © Metro Gold Line Foothill Extension Construction Authority

(三)地铁金线山麓扩建工程监督

工程AECOM，设计咨询服务的创新者，领导了该项目的设计和工程。这家总部位于洛杉矶的公司负责接受莱斯特和建筑管理局开发的概念设计，并解决这座桥的许多具有挑战性的可建造性问题。除了独特的艺术设计之外，还需要创造一个跨越活动地震断层的大跨度。为了解决这些问题，AECOM设计了一个三跨的，后张紧的箱梁，由一个单柱弯曲和一个横跨高速公路的外拱支撑。由于结构的巨大的垂直和横向要求，AECOM设计了三个大直径钻孔灌注(CIDH)基础，每个110英尺深，11英尺直径。(鼓掌)

Engineering AECOM, an innovator in design consulting services, led the project’s design and engineering. The Los Angeles-based firm was responsible for taking the conceptual design developed by Mr. Leicester and the Construction Authority, and addressing the many challenging constructability issues of the bridge. Adding to the challenge of the unique artistic design was the need to create a long span crossing an active seismic fault. To address these issues, AECOM designed a three-span, cast-in-place post-tensioned box girder supported by a single column bent and one outrigger bent spanning the freeway. Due to large vertical and lateral demands of the structure, AECOM designed three, large-diameter cast-in-drilled-hole (CIDH) foundations - each 110 feet deep and 11 feet in diameter.   

 © Metro Gold Line Foothill Extension Construction Authority

(三)地铁金线山麓扩建工程监督

Architects Andrew Leicester, Rivka Night

Location Foothill Fwy, Arcadia, CA 91007, United States

Category Pedestrian Bridge

Lead Architect Rivka Night

Design Concept Advisor Andrew Leicester

Project Year 2012

Photographs Metro Gold Line Foothill Extension Construction Authority

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