密苏里州罗切波特附近的I-70的2.4亿密苏里河交叉口正在进行建设。配对的3,000英尺长的三车道结构将取代一座60岁的，结构不足的连续桁架桥梁. of Transportation calls the “lynchpin of America” because the highway connects the state’s largest cities, St. Louis and Kansas City, and key portions of the U.S. system. The structure currently carries more than 12.5 million vehicles per year, including 3.6 million trucks. To minimize traffic impacts, plans call for the existing bridge to remain in service until the first river span is completed, a milestone the agency expects to achieve by late 2023. The second bridge is scheduled to be ready the following year. Lunda Construction Co. is leading the design-build project, which is being funded in part by an $81.2-million Infrastructure for Rebuilding America (INFRA) grant from the U.S. Dept. of Transportation. Parsons Transportation Group Inc., Dan Brown & Associates Inc. and Hugh Zeng United are providing design services. Safety enhancements planned for the new structures include high-friction surface treatment, pavement sensors, wet reflective striping and a linear delineation system. The project team will also reconstruct the nearby County Route BB interchange.

Photo courtesy Florida DOT

佛罗里达

木星的电梯

The Florida Dept. of Transportation has begun a five-year, $122-million project to replace the U.S. Route 1 bridge across the Loxahatchee River in Jupiter. To be built by Johnson Brothers Construction Inc., the twin double-leaf drawbridge will provide up to 42 ft of vertical clearance—nearly double that of the structurally deficient 1958 bridge it replaces—and a 125-ft-wide navigation channel. Other features include a concrete bridge deck to reduce traffic noise, a new tender house, pedestrian overlooks and a stormwater management system to safeguard the river’s marine life.

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南卡罗来纳

Carolina Crossroads Phase 2

南卡罗来纳州运输部已通过五阶段，17亿美元的计划授予了前两项建筑合同，以现代化过时的I-26 /I-20 /I-126 /I-126哥伦比亚的交易所。总共3.37亿美元，将于明年开始大规模建设，前两个阶段开始了为期7年的努力，以扩大14英里的州际公路，升级了7个以现代坡道配置和其他措施来提高安全性和交通流量的七个互换。

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Illinois

I-57/I-74 Interchange

八月正式进行，这项为期四年，21680万美元的伊利诺伊州运输部项目将使尚未达到60年历史的Champaign的Champaign Cloverleaf交易所最新，以更好地支持现代交通量。该项目旨在消除合并，编织和缓慢速度的现有危害，其中包括11个新结构，包括两个天桥坡道。两个方向上的第三条辅助车道将添加到I-74的一部分中。

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缅因州

汉普顿桥梁捆绑包

The Maine Dept. of Transportation is more than halfway through its nearly three-year, $44.8-million program to replace eight 60-year-old bridges along a four-mile stretch of I-19 in Hampden. With northbound structures substantially complete in September, construction is underway at all four southbound bridges, all of which feature non-corrosive materials to reduce future maintenance requirements. The Souadabscook Stream crossing is using single-span structures to eliminate locating piers in the waterway.

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Texas

Nueces River Bridge

Construction is underway on an $85.7-million upgrade to a 3-mile section of I-37 outside Corpus Christi. The 66-month project includes building wider, higher bridges across the Nueces River to make the crossing more resilient to storm surge and flooding. Along with widening the highway to eight lanes, the Texas Dept. of Transportation will upgrade the nearby U.S. Route 77 interchange by rebuilding several structures.