US 301 Asphalt Test Road

The US 301 Asphalt Test Road provides a unique opportunity to evaluate the real-world performance of new asphalt pavement technologies and innovative design concepts. It examines how various factors—such as traffic loads, pavement design, material properties, construction methods, and environmental conditions—interact and affect long-term performance. Built parallel to an existing highway and a concrete test road, the facility allows traffic to be safely diverted when needed, enabling continuous performance monitoring without disrupting regular travel. This facility comprises 12 main sections, with Sections 8 and 10 further divided into two smaller sub-sections. Each section is 1,000 feet long and includes both a travel lane and a passing lane. Sections 1 through 7 are focused on the base layer study, featuring a standard Florida top layer structure with varying base configurations. Section 8 is dedicated to studying reflective cracking and is divided into two 500-foot sub-sections: 8A with crack relief mix and 8B as control. Section 9 features the Superpave 5 study, while Section 10 focuses on a deep-lift pavement design involving two different mix designs and is also split into two 500-foot sub-sections. Sections 11 and 12 are part of the open-graded friction course study, with Section 11 as a common Florida OGFC section and Section 12 as the newly developed quiet friction course test section. Construction work on the test road began in 2023 and continued for about eight months. After completing all paving and safety work, the road was officially opened to public traffic in August 2024. The facility now serves as a real-world testing ground where pavement materials and designs can be evaluated under Florida’s unique traffic loads and weather conditions.美国301号沥青试验路为评估新型沥青路面技术与创新设计理念的实际服役性能提供了独一无二的测试场景。该试验路旨在探究交通荷载、路面设计、材料特性、施工工艺与环境条件等多类因素如何相互作用，并对路面长期服役性能产生影响。该试验路紧邻既有高速公路与混凝土试验路修建，可根据需求安全疏导交通，能够在不干扰常规通行的前提下开展持续性路面性能监测。该试验路共设12个主试验段，其中第8段与第10段进一步划分为两个小型子试验段。每个主试验段长度为1000英尺，同时包含行车道与超车道。第1至7号试验段聚焦基层研究，采用标准佛罗里达路面顶层结构，并搭配不同的基层配置方案。第8号试验段专门用于反射裂缝相关研究，被划分为两个500英尺的子试验段：8A段采用抗裂混合料，8B段作为对照组。第9号试验段为高性能沥青路面5号（Superpave 5）研究项目，而第10号试验段则聚焦采用两种不同混合料设计的深铺层路面结构，同样被划分为两个500英尺的子试验段。第11与12号试验段属于开级配抗滑磨耗层（open-graded friction course, OGFC）研究范畴：第11号试验段为常规佛罗里达标准OGFC试验段，第12号试验段则为新研发的静音抗滑磨耗层测试段。该试验路的施工工作于2023年启动，历时约8个月。在完成全部摊铺与安全设施施工后，该试验路于2024年8月正式对公众开放通行。目前，该试验路已成为一处实景测试平台，可在佛罗里达州独特的交通荷载与气象条件下，对路面材料与设计方案进行实车测试评估。