01592117

Component

https://doi.org/10.3141/2556-06

In an effort to improve the safety and capacity of existing roads, many transportation practitioners are implementing innovative designs at intersections and interchanges. The development of construction phasing plans for these projects is a critical component for maintaining safety and mobility on the facility during construction. The goal of this study was to address the gaps in existing knowledge by presenting the state of the practice and providing guidance for transportation practitioners in developing construction phasing and maintenance of traffic (MOT) plans for projects with innovative geometric designs. Several types of innovative geometric designs were studied, including the roundabout, single-point urban interchange, diverging diamond interchange, restricted-crossing left turn, median U-turn, and displaced left turn. Examples of MOT phasing diagrams showing phasing sequencing and construction work areas were developed on the basis of a review of the literature, a survey of practitioners, interviews with industry experts, and a review of actual project plans. The examples of MOT phasing diagrams are intended to serve as a starting point for transportation practitioners, but project-specific factors such as driver experience, availability of detours, traffic counts, adjacent land use, elevation differences, barrier offsets, number of lanes, and anticipated impacts of a possible closure should be considered when deciding on the best MOT methods for a given project.

01586807

16-2297

English

pp 49–64

2016

Transportation Research Record: Journal of the Transportation Research Board

9780309441186

Print

Figures (9) ; References (9) ; Tables (2)

Construction scheduling; Diagrams; Geometric design; State of the practice; Work zone traffic control

Highways; Operations and Traffic Management; I73: Traffic Control

PRP, TRIS, TRB, ATRI

Jan 12 2016 5:01PM

• Critical Assessment of Methodologies for Operations and Safety Evaluations of Freeway Turbulence
• Examination of the Free-Flow Speed Distribution on Two-Lane Rural Roads
• Impact of Exit Ramp Geometric Treatments at Diverging Diamond Interchanges on Queue Spillback
• Optimization of Variable Approach Lane Use at Isolated Signalized Intersections
• Passing Behavior on Two-Lane Roads in Real and Simulated Environments
• Roundabouts as a Form of Access Management
• Site-Specific Safety Analysis of Diverging Diamond Interchange Ramp Terminals
• Statistical Analysis of Effects of Access, Traffic Exposure, and Frontage Parameters on Sale Price of Commercial Real Property in Kansas