Landscaping Key Part of RIDOT Airport Connector Project

A $12.9 million Airport Connector resurfacing project in Warwick, RI, is going to include a “massive” landscaping effort that will provide more than 400 plants and trees in both the median and the shoulder of the new roadway.

[Above photo by RIDOT]

Governor Dan McKee (D) and Rhode Island Department of Transportation Director Peter Alviti, Jr., hosted a groundbreaking ceremony for the new project for a variety of federal, state, and local officials on July 18.

The governor noted in a statement that RIDOT is blending the Airport Connector’s landscaping “seamlessly” with similar plantings around Rhode Island T.F. Green International Airport to create a more “visually appealing” gateway for the state.

“For thousands of visitors to Rhode Island, the Airport Connector is Rhode Island’s welcome mat,” Governor McKee said. “These improvements will make vital safety improvements while providing a great first impression of our great state.”

The new road surface will give the 20,000 vehicles a safer riding surface when traveling the one-mile Airport Connector and three miles of Route 1 and Route 1A (known as the “Post Road”) from Coronado Road to Warwick Avenue.

In addition to new pavement, the project design eliminates hazardous drop-offs and includes new high-visibility pavement markers while improving pedestrian access conditions along Post Road with new sidewalks and pedestrian ramps.

On the I-95 southbound ramp, the project – scheduled for completion in June 2023 – will replace the median guardrail and install a grass swale, RIDOT said.

“Rhode Islanders have seen the transformation in our roads and bridges, and thanks to the new [$1.2 trillion] Infrastructure and Investment Jobs Act, we will be kicking our paving program into high gear and providing the type of safe, smooth roadways Rhode Islanders and all visitors to Rhode Island expect and deserve,” noted RIDOT Director Alviti.

He added that this project is part of the $92 million RIDOT plans to spend on paving projects in 2022 as well as part of the $492 million slated for statewide paving work over the next five years.

The incorporation of landscaping efforts as part of this RIDOT roadway project is something other state departments of transportation are mimicking in other parts of the country.

For example, in November 2021, the Ohio Department of Transportation made final changes to its Opportunity Corridor Boulevard Project in Cleveland; an undertaking specifically designed to revitalize the neighborhood between I-490 and University Circle once known as the “Forgotten Triangle” due to the lack of economic activity.

The new 35-mph boulevard-type road includes a median, traffic signals, new pedestrian and bicycle paths, tree lawns, and landscaping. It also includes a collection of vehicular, pedestrian, and railroad bridges.

“Transportation is about connecting people. This isn’t just an investment in asphalt, concrete, and steel, this is an investment in people, business, and opportunity,” said Governor Mike DeWine (R) at the time.

Tennessee DOT Helps Turn Old Tires into Walking Trail

An eyesore of thousands of dumped tires were recently recycled into material for a hard-surface walking and biking trail at the Tennessee state park in Memphis they once littered, thanks in part to a grant from the Tennessee Department of Transportation.

[Above photo by the Tennessee DOT]

The Tennessee DOT and Tennessee State Parks recently opened the 2.5-mile-long walking and biking trail at T.O. Fuller State Park in Memphis. Billed as one of the longest rubber-bearing trails in the country, the new trail is primarily composed of 24,000 recycled tires.

Tennessee DOT issued a $200,000 litter grant to support the trail project, which shredded those 24,000 abandoned tires into quarter-inch pieces of crumb rubber. A federal recreational trails program provided another $280,000, with the Tennessee Department of Environment and Conservation or TDEC providing an additional $250,000 grant.

“Litter and illegal dumping are costly and damaging to Tennessee,” explained Joseph Galbato, III, who until recently served as Tennessee DOT’s interim commissioner, in a statement.

[In May, Governor Bill Lee (R) appointed Deputy Governor Butch Eley to serve as the agency’s commissioner in addition to Eley’s current duties.]

“We are thankful for collaborative partnerships like the ‘Tires to Trails’ project which not only addresses the litter problem but turns it into a meaningful and positive long-lasting resource for the community,” Galbato added.

Michael McClanahan, an outreach specialist with Tennessee DOT, getting his hands dirty to help pull tires out of the park.

The crumb rubber from the old tires – mixed with a rock aggregate and a polyurethane binder – does not include the metal from those tires, noted Brent Miller, manager of Patriot Tire Recycling in Bristol, TN.

Typically, recycled tires are shredded and used as fuel stock for power plants and paper mills, or made into doormats, he explained.

“This was the first time we’ve done a trail,” said Miller, whose company handles about a million tires a year.

Recycled tires can live a useful second life in some transportation applications. The crumb rubber creates a flexible roadway that resists cracking, requires less maintenance, and is easier on the feet of walkers and joggers, said Alle Crampton, environmental scientist, and manager of the Tire Environmental Act Program for the state.

The walkways also are porous, virtually reducing the stormwater runoff problems associated with concrete and asphalt. The water can soak through the trail and reach the root systems of trees, making it less likely that the root systems will expand and crack the walkway, Crampton said.

More than 400 volunteers collected the passenger, commercial truck, and heavy equipment tires from the park, with many of the volunteers coming from Tennessee DOT, TDEC, the City of Memphis, Shelby County, and Memphis City Beautiful.

T.O. Fuller State Park was the first state park open for African Americans east of the Mississippi River. Originally built in 1938, the state later renamed the park in honor of Dr. Thomas O. Fuller, a prominent African-American educator, pastor, politician, civic leader, and author.

Colorado Moving Forward with Clean Truck Strategy

The administration of Colorado Governor Jared Polis (D) recently finalized its Clean Truck Strategy – initially unveiled in March – after what the governor described as “extensive public input.”

[Above photo by the Colorado DOT]

Developed by the Colorado Energy Office, the Colorado Department of Transportation, and the Colorado Department of Public Health & Environment, the 27-page Clean Truck Strategy seeks to encourage the adoption of zero-emission medium- and heavy-duty trucks statewide, potentially reducing greenhouse gas or GHG emissions from those vehicles by at least 45 percent in Colorado by 2050.

Medium- and heavy-duty vehicles covered by Colorado’s Clean Truck Strategy include tractor-trailers, school buses, snowplows, delivery vans, large pick-up trucks, and many different vehicle types in between.

A separate 147-page study compiled by the Colorado Energy Office found that medium- and heavy-duty vehicles are the second-largest source of GHG emissions in the transportation sector, producing 22 percent of on-road GHG emissions despite making up less than 10 percent of the total Colorado vehicle population.

That study found if Colorado pursues an “accelerated transition” to zero-emission medium- and heavy-duty vehicle models, it could cut GHG emissions by 45 percent to 59 percent, reduce nitrogen oxide emissions by 54 percent to 93 percent, and reduce particulate matter emissions by 53 percent to 68 percent below 2005 levels by 2050.

Those three state agencies said they would continue collaborating with stakeholders and initiating implementation on “near-term” actions over the next few months, including:

Those agencies also expect to update the Clean Truck Strategy every two years to respond to “evolving market and lessons” learned from implementing the plan’s near-term requirements. “Colorado has enormous opportunities to reduce pollution and improve quality of life by transitioning from diesel to zero-emission trucks and buses,” explained Will Toor, executive director of the Colorado Energy Office, in a statement. “This strategic plan creates a framework for achieving big things through investment, collaboration, and regulation.”

Maine DOT Creates Offshore Wind Port Advisory Group

The Maine Department of Transportation has formed an Offshore Wind Port Advisory Group (OSWPAG) to advise it and other state officials regarding the potential development of wind port facilities, which will be integral to promoting the University of Maine’s patented floating offshore wind technology and attracting offshore wind industry investment to Maine.

[Above image via the University of Maine]

The OSWPAG consists of 19 members representing a spectrum of local, regional, and statewide stakeholders, including representatives from the environmental, business, port and marine transportation, fishing, labor, construction, and conservation interests.

State government officials representing Maine DOT, the Governor’s Energy Office or GEO, the Governor’s Office of Policy Innovation & Future, the Maine Department of Marine Resources, and others will serve as subject matter experts to support the OSWPAG’s work. New England Aqua Ventus – the firm working with GEO to develop the floating offshore wind research array – and Maine Coast Heritage Trust, the holder of the conservation easement on the 600 acres of Sears Island reserved for conservation, will also be available to serve as technical advisors. Maine DOT said it would provide logistical and communications support for those efforts.

“Maine DOT and our collaborating state agencies want to thank the members of the Offshore Wind Port Advisory Group for agreeing to be part of this important process,” said Bruce Van Note, the agency’s commissioner, in a statement.

“We expect the stakeholders on this group to have varying perspectives and to engage in robust and thoughtful discussions regarding the potential for port development to support the rapidly growing offshore wind market,” he added. “This group’s work will provide important input as we look ahead to the ways Maine can help harness clean energy while creating jobs and strengthening our state’s economy.”

The formation of the OSWPAG is a companion effort to the Maine Offshore Wind Initiative led by the GEO, which is exploring the responsible development of floating offshore wind energy in the federal waters off the Gulf of Maine while ensuring balance with our state’s maritime industries and environment.

Maine DOT said a key component of this broader GEO initiative is the development of the Offshore Wind Roadmap, a comprehensive economic development planning process now underway. Working groups of the Roadmap include those studying energy markets, environmental and wildlife issues, supply chain, workforce development, port, and marine transportation needs, and fisheries.

Boom: Oregon DOT Uses ‘Fireworks’ to Drive Birds from Bridges

The Oregon Department of Transportation has a public outreach message for water birds who want to nest on two of their iconic bridges: Beat it.

[Above: Matt Alex, a wildlife biologist with the U.S. Dept. of Agriculture, fires a “flash pistol” to scare off birds. Photo via the Oregon DOT.]

Officially, Oregon DOT is utilizing an auditory dispersal method to relocate cormorants to facilitate infrastructure maintenance, such as inspection and painting. In practice, a technician fires a pistol that flashes, pops, and whistles. The sounds and lights chase the birds from the bridges.

“It basically is a gun-like mechanism that looks like a fireworks show,” explained Angela Beers Seydel, an Oregon DOT public information officer, in describing a test of the procedure in early March. “It whizzed, it banged, it flashed.”

Both bridges are on U.S. 101, along the Pacific coast. The 4.1-mile Astoria-Megler Bridge crosses the Columbia River and connects Oregon and Washington. It is the longest continuous truss bridge in the U.S., and painting it takes more than eight years and about $75 million.

Meanwhile, the Yaquina Bay Bridge – located about 300 miles south – is an 88-year-old arch structure built by the Public Works Administration; a depression-era federal program that also financed the Lincoln Tunnel and Hoover Dam. Conde McCullough, a renowned Oregon DOT engineer (he has his own Wikipedia page) designed the Yaquina Bay Bridge – along with 14 others along U.S. 101.

The sound-and-light program will continue through September on the Astoria-Megler Bridge and through June on the Yaquina Bay Bridge.

“These birds affect our ability to conduct inspections,” noted Don Hamilton, an Oregon DOT spokesperson. He added that those inspections occur at least every two years, but that cannot happen if birds, bird nests, or bird “guano” are on the bridge. Guano, or bird droppings, also have a corrosive effect on bridges and can be toxic to humans.

One or two technicians go on the U.S. 101 bridges every day and fire off several rounds.

Seydel said the sensory assaults take place at random times “so the birds don’t recognize a pattern. You want them to be uncomfortable to be in that area.”

Recently, Oregon DOT used propane cannons, which produce louder and deeper sounds, to successfully chase away birds from the Interstate 5 bridge over the Columbia River. Seydel said Oregon DOT might bring out those “big guns” if the pistol sounds and flashes do not work on the U.S. 101 bridges.

“There’s also the canon, if necessary,” she said. “So, whiz, bang, boom is the possibility.”

Caltrans Awards $312M for Beautification Projects

As part of Governor Gavin Newsom’s landmark $1.1 billion Clean California initiative, the California Department of Transportation recently awarded $312 million for 126 beautification projects along the state’s highway system.

[Above photo by Caltrans]

Developed in close collaboration with tribal and local governments, non-profits, and businesses, those 126 beautification projects – due to begin in April – include art installations, green space (such as parks or community gardens), and proposals that “improve safety and promote community connections.”

Designed to foster cultural connections and civic pride, Caltrans noted in a statement that those projects should generate 3,600 jobs as part of the governor’s multi-year cleanup initiative to remove trash and beautify community gateways and public areas along highways, streets, and roads. The agency added that roughly 98 percent of those beautification projects would benefit historically underserved or excluded communities.

“With Clean California projects transforming more and more sites across the state, we’re taking the next step to create enriching public spaces that serve the needs of our diverse communities and that all of us can take pride in – starting in the neighborhoods that need it most,” said Governor Gavin Newsom (D) in a separate statement. “Working together, the state and local governments are advancing unique beautification projects that will make a positive impact for years to come.”

In addition to these awards for Clean California projects along the state right-of-way, the governor announced in December 2021 the availability of almost $300 million in grants to cities and counties for local projects that “clean and beautify” neighborhood streets, parks, and transit centers throughout California.

Caltrans will review the project proposals from cities, counties, transit agencies, tribal governments, and other governmental entities, then announce grant recipients on March 1.

Over the next three years, Caltrans estimates that the “Clean California” program will remove an additional 1.2 million cubic yards, or 21,000 tons, of trash from the state highway system alone. The initiative has already resulted in 6,300 tons of litter being removed from the State Highway System and, to date, Caltrans has hired 528 new team members, including 428 maintenance workers who collect litter and perform maintenance duties like graffiti removal.

NCDOT Providing Material for Artificial Reefs

The North Carolina Department of Transportation is providing more than 1,000 tons of damaged concrete pipe to help the North Carolina Division of Marine Fisheries shore up two artificial reefs.

[Above photo by NCDOT]

NCDOT sent those discarded culverts – which accumulated over the past several years as the result of an aggressive pipe replacement program in part due to damage caused by recent hurricanes – to the Port of Wilmington for eventual deployment off of the Brunswick County coast.

N.C. Division of Marine Fisheries – part of the North Carolina Department of Environmental Quality – maintains several artificial reefs that create habitat for fish and ideal fishing sites.

It said artificial reefs create habitat for fish by creating three-dimensional structures that replicate the ecological functions of food and refuge fish and other marine life need to survive and create “crucial” spawning and foraging habitat for many commercially and recreationally important fish species.   

The fisheries division has been working with NCDOT to find “new and cost-effective uses” for scrapped concrete pipe. Using that piping to build artificial reefs for marine life along the state’s coastline in a money saver, the agency noted – eliminating $65,000 in tipping fees to dispose of it in a construction and demolition landfill.

Ken Clark, an NCDOT district engineer, said the idea for donating the pipe arose during a conference for coastal resiliency. That is when he discovered the state’s marine fisheries division could repurpose his stockpile of precast concrete, barreled-shaped pipe to augment existing artificial reefs. 

“We had considered many options on how to properly dispose of this unusable material when we formed this unique collaboration with the Division of Marine Fisheries last year,” he explained in a statement. “This program mutually benefits both state agencies.”

Other state departments of transportation are involved in similar artificial reef construction projects.

For example, in 2020, the New York State Department of Transportation began helping expand a series of artificial reefs off the shores of Long Island as part of a three-year-long multiagency effort – dumping a retired tugboat, 16 rail cars, and a streel turbine on Hempstead Reef.

“[We are] proud to work with our sister agencies on this important program, repurposing transportation materials to expand artificial reefs and support biodiversity, fishing, and tourism,” explained Marie Therese Dominguez, NYSDOT’s commissioner, in a statement at the time.

“It is another example of how [our state] is taking bold steps to protect our ecosystems and foster sustainable economic growth that will benefit current and future generations of New Yorkers,” she said.

Caltrans Approves Use of Low-Carbon Cement

The California Department of Transportation recently approved the use of low-carbon cement to help reduce the carbon footprint of the state’s transportation system.

[Above photo by Caltrans]

Known formally as Portland Limestone Cement or PLC, low-carbon cement is a blended product containing higher limestone content. Using more limestone creates less “clinker,” the basic component in nearly all types of cement, in the manufacturing process; generating less carbon dioxide as a result.

Caltrans said its road construction and maintenance projects could generate less carbon dioxide with the same high-performance standards at a slightly lower cost by using more PLC. For example, in 2017 alone, Caltrans used 325,000 tons of cement to upgrade the state highway system. Switching to low-carbon cement could potentially reduce carbon dioxide emissions by 28,000 tons a year — the equivalent of removing more than 6,000 cars off the road.

“Using low-carbon cement can cut Caltrans’ concrete-related carbon dioxide emissions annually by up to 10 percent,” noted Toks Omishakin, director of Caltrans, in a statement. “This is a big step in supporting California’s efforts to achieve carbon neutrality by 2045.”

The agency based its new low-carbon cement standards on Caltrans-funded research conducted at Oregon State University, which concluded that PLC is equally suitable for Caltrans’ construction projects as ordinary cement with a reduced carbon footprint.

Throughout the review process, Caltrans worked closely with the California Air Resources Board plus industry experts and stakeholders, such as the California Construction and Industrial Materials Association and the California Nevada Cement Association, to draft the new standard specifications.

Ohio Unveils Connected Mobility Corridor

The recently opened 33 Smart Mobility Corridor in central Ohio is a connected highway project that seeks to enhance motor vehicle safety, reduce traffic congestion, and improve fuel economy.

[Above photo by DriveOhio]

This connected highway project – overseen by InnovateOhio, which coordinates service integration among state agencies – involves the Ohio Department of Transportation, DriveOhio, the U.S. Department of Transportation, and the NW 33 Council of Governments, among others.

With a 35-mile redundant loop of fiber connectivity, the corridor includes 432 strands of available fiber, 63 roadside units, and 45 connected intersections. The route also encompasses diverse geographical and meteorological scenarios to provide a one-of-a-kind vehicle testing “ecosystem” for developing and testing smart mobility technology.

“Transportation is evolving, and mobility technology solutions that have and will be tested on the 33 Smart Mobility Corridor will save lives,” noted Jack Marchbanks, Ohio DOT’s director, in a statement. “The partnership framework we have established during this project is a model for future programs across the state, as we work to improve the quality of life for all Ohioans.”

“We know that connected and automated vehicle technology will continue to mature and scale at an ever-increasing pace,” added Howard Wood, executive director of DriveOhio, which is a division of the Ohio DOT. “As these systems are tested and refined, infrastructure plays a major role in the development cycle as mobility technology interphases with our legacy transportation system.”

“[This] corridor enables us to conduct real-world testing of our SAFE SWARM technology, which uses vehicle-to-everything communication to help mitigate collisions, improve traffic flow, increase fuel efficiency for all road users, and prepare for higher-levels of automated driving features,” said Sue Bai, chief engineer at Honda Research Institute USA, Inc.

Currently, Honda is operating over 200 connected vehicles along the corridor to understand how technology impacts the customer and realize a connected ecosystem that protects everyone sharing the road, including pedestrians, motorcycles, and bicyclists.

“This initiative is helping us develop the transportation ecosystem of the future with like-minded partners in the auto industry, government, academia, and the private sector,” Bai added.

Nevada DOT Offering “Water-Smart” Advice to State Residents

The Environmental Division of the Nevada Department of Transportation is offering state residents landscaping advice on pesticide and herbicide use as well as “water-smart practices” when conducting residential landscaping activities.

[Above photo by the Southern Nevada Water Authority]

“Most people are surprised to learn that homes can be a source of pollution,” explained James Murphy, the Environmental Division’s program manager within Nevada DOT, in a statement – noting that his division oversees disciplines such as stormwater, air quality, noise, wildlife biology, environmental engineering, and cultural resources.

“We encourage Nevada residents to take steps to avoid polluting our waterways, such as avoiding overwatering and applying pesticides, herbicides and fertilizers sparingly, with caution, and per product labeling,” he said.

Murphy explained that, in Nevada, sewer systems and stormwater drains are separate systems. Water that goes down the drain inside a home via toilet or sink goes to a wastewater treatment plant where it is treated and filtered. Conversely, water that flows down driveways and streets into gutters goes directly into a storm drain that flows untreated into lakes, rivers and streams.

Thus runoff from landscaped areas may contain fertilizers, pesticides or other materials that are harmful to lakes and streams, stressed Charles Schembre, an environmental scientist with the Nevada Division of Environmental Protection.

He explained that the most important thing residents could do to prevent stormwater contamination from landscaping activities is to avoid watering the sidewalk. Installing a buffer between the lawn and sidewalk – such as rocks, woody mulch or plants – will prevent runoff onto the sidewalk. This is a critical component in reducing runoff of pollutants into storm drains, he said.

Other tips include:

  • Use “healthy soil” practices and use organic fertilizers and pesticides sparingly; make sure to follow product label instructions.
  • Consider planting trees, seeds and plants that are native to Nevada, which require less water.
  • Use “selective” herbicide applications to target just weeds and avoid affecting desirable plant species. Avoid spraying during conditions where herbicides may drift to non-target plant species – specifically when wind speeds are greater than 15 mph.
  • Use organic mulch or other pest control methods whenever possible.
  • Install a buffer between the lawn and sidewalk to prevent irrigation runoff onto the sidewalk.
  • Pick up pet waste and dispose of it properly.
  • Use a commercial car wash or wash your car on the grass so the water infiltrates into the ground instead of spilling into storm drains.