No Boundaries
Transportation Maintenance Innovation
Seasonal maintenance of roadside rights of way often overlaps with pollinator activities.
The New York State Department of Transportation initiated a research study to determine how modifying the state’s traditional mowing practices can affect pollinator populations and plants along the roadway.
Read the final report: Effects of a Modified Mowing Regime in NYSDOT ROWs on Pollinators and Vegetation, September 2023.
Image source: Texas Department of Transportation
No Boundaries has published a listing of technical sessions and papers related to maintenance for the 2024 Transportation Research Board Annual Meeting. The compendium includes each poster and lectern session’s title, authors, identification number, and a link to find the work on TRB’s Online Program portal. Note: TRB requires a login to access full papers and presentations. If you are having trouble accessing the papers, check with your DOT or other transportation library.
Download the compendium: 2024 TRB Annual Meeting: Technical Sessions and Papers Related to Maintenance.
A polymer overlay can extend a bridge deck’s service life by making it more waterproof and resistant to chlorides. These treatments are also known to improve surface friction, increasing skid resistance and driver safety.
While polymer overlays have many advantages over traditional concrete overlays, they tend to cost more upfront. To better understand how the treatments compare in durability and cost-effectiveness, the Montana Department of Transportation installed polymer overlays on four of the state’s bridge decks and monitored the structures’ performance for several years.
Read the report: Evaluation of Thin Polymer Overlays for Bridge Decks, December 2023
Image source: Montana Department of Transportation
Seeds that are native to a local environment tend to be more resilient and require less maintenance than other seed varieties when used in roadside plantings.
To highlight the importance of locally adapted native seeds and how they can help an agency meet its restoration and conservation goals, the Transportation Research Board’s Standing Technical Committees on Roadside Maintenance Operations and Landscape and Environmental Design will host a webinar on February 13 from 11:00 a.m. – 12:30 p.m. Eastern.
View details about this webinar, and sign into MyTRB.org to register.
Image source: Federal Highway Administration
Chip seals are one of the most common treatments for extending the service life of asphalt pavements. To ensure its chip seals are achieving the intended results, the Virginia Department of Transportation (VDOT) conducted an assessment of eight pavement resurfacing projects across the state.
The research evaluated the agency’s practices and monitored the test pavements for multiple seasons to evaluate performance in the field. The project resulted in material and design recommendations to achieve better and more cost-effective results.
Read the report: Evaluation of Virginia Department of Transportation Chip Seal Practices: Materials and Design, January 2024.
Image source: Minnesota Department of Transportation
Smart work zone systems offer to provide real-time information to drivers and increase safety for maintenance workers. However, states have little guidance for determining when smart work zones should be deployed and how the components should be configured for maximum effect.
To better understand smart work zone systems and how they can be used to enhance safety for all road users, the Illinois Department of Transportation initiated a research project that developed an assessment tool and guidance that agency planners can use to identify appropriate situations and equipment layouts.
Read the research report: Development of Design Guidance for Smart Work Zone Systems, January 2024.
Image source: Texas Department of Transportation