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Culverts are buried drainage structures underneath roadways or embankments that are open at both ends and used to convey and transport water. They can often be vulnerable to accelerated deterioration when there is more frequent severe weather, which can lead to a suite of costly unplanned repairs, rehabilitation projects, or full replacements. NCHRP Synthesis 651: […]
Incorporation of flood resilience in road infrastructure is urgently needed to reduce economic losses. Flooded roads may undergo rapid deterioration after being reopened to traffic. Thus, transportation agencies must develop pavement design and management practices and methodologies that account for the likelihood and impacts of flooding, using prior experiences in similar situations and nondestructive testing […]
The evolving landscape of climate conditions leads to more frequent and intense natural hazard events, affecting low-volume roads on federal lands. Despite the existence of known maintenance solutions to reduce these impacts, the limited funding availability hinders the implementation of these solutions at scale. This funding limitation is compounded by the absence of necessary data […]
An overarching goal of road corridor projects is to reduce traffic delays and improve safety for all users, including drivers, pedestrians, cyclists, and delivery vehicles. Doing so often involves changing the way road users access sites along the road, such as by removing or relocating driveways; adding medians, turning restrictions, service and frontage roads, and […]
The NZVOC model and the VEPM were reviewed in terms of each model’s purpose, scope, and data inputs and outputs and their update frequency, and common and unique elements were identified. From the review, several potential opportunities were identified to align similar aspects of the models. These include aligning the current and forecasted vehicle fleet, […]
The first edition of the HSM included safety performance functions (SPFs) for roadway segments and intersections. However, not all intersection types are covered in the first edition of tthe HSM. This research was conducted to develop SPFs for new intersection configurations and traffic control types not covered in the first edition of the HSM, for […]