Reconstruction of Runway 3L/21R and Associated Taxiways at Detroit Metropolitan Wayne County Airport Earns Envision Gold

The ongoing reconstruction of Runway 3L/21R and associated taxiways at Detroit Metropolitan Wayne County Airport (DTW) received the Envision Gold award for sustainable infrastructure. Previously, the Wayne County Airport Authority (WCAA) achieved Envision Silver for another major airfield project—the reconstruction of DTW’s Runway 4L/22R and associated taxiways—in 2016. The project team built on past successes and lessons learned to expand the sustainability objectives and initiatives throughout the recent Runway 3L design and construction.

This $180 million project is reconstructing Runway 3L/21R and parallel Taxiway M and partial parallel Taxiway P. These facilities were originally constructed in the 1950’s and had deteriorated to a point where full reconstruction was necessary. As part of this project, decommissioned pavement is being removed, geometry is being updated to current design standards, bypass taxiways are being added, and Taxiway P is being extended. These measures are expected to improve safety by reducing acute angle intersections, adding shoulder pavement, and improving the operational flow throughout the completed area.

“Incorporating sustainable measures into two large runway projects, including the reconstruction of our primary runways, has been a fulfilling experience for the Airport Authority,” said Deputy Director Theresa Samosiuk, the WCAA project manager for both the 4L and 3L runway projects. “While reconstructing Runway 3L/21R and its associated taxiways, we will maintain nearly all materials on site. We are also reducing future maintenance through LED lighting and other measures, contributing to the Airport Authority’s overall sustainability goals – which includes a target for 100% LED airfield lighting at DTW. It’s exciting to have a direct and positive impact on how we deliver infrastructure projects across the airports.”


ENV SP Spotlight: Jesse Unke of RAM Consulting

Jesse Unke is both a professional engineer in Canada and the United States, and the Director of Project Management at RAM Consulting in Vancouver, British Columbia. He works on a variety of transportation and utility projects, ranging from complex, high-profile projects to smaller capital programs. In addition to being an ENV SP, he is a Project/Risk Management Professional (PMP/RMP), LEED Accredited Professional (LEED AP) and a MMCD Certified Contract Administrator (CCA).

ISI had an opportunity to connect with Jesse to learn more about his work, and his experience with Envision.


Institute for Sustainable Infrastructure (ISI): Please tell us a little bit about yourself and what you enjoy most about your career.

Jesse Unke (JU): My career in the civil infrastructure industry started over 18 years ago. The things I enjoy most about my job are developing a deep understanding of a client’s drivers, working creatively and collaboratively as a team, implementing successful strategic initiatives, and engaging diverse sets of stakeholders.

I am actively engaged in the project management/construction community in British Columbia. Currently, I volunteer as President of the British Columbia Construction Roundtable (BCCR) and serve as a Board Member with both the American Association of Cost Engineers – British Columbia (AACE-BC) and Young Professionals in Energy – Vancouver (YPE).

Professional Experience

(ISI): What drew you to your field of work?

(JU): I like using my talents as a problem solver and critical thinker to devise holistic solutions to complex issues. From an early age, construction was very interesting to me. That led me to a career where I can make positive contributions to society and help build communities.

(ISI): What would you say has been your biggest career challenge? What about your proudest career moment?

(JU): My biggest career challenge has also been my proudest career moment. A component of my role at RAM is business development, and I was tasked with implementing the firm’s forward-thinking vision with an emphasis on our core values of safety, innovation, integrity, sustainability, and fun. I am very proud that my contributions helped to triple the size of the firm in just a few years.

Envision Experience

(ISI): How did you learn about Envision?

(JU): I came across some online articles featuring Envision projects in doing research on innovation and sustainable practices. I was impressed. This prompted me to look explore the Institute for Sustainable Infrastructure’s website and ultimately pursue an ENV SP credential.

(ISI): Why did you decide to pursue an Envision credential?

(JU): I have been a long-time believer in sustainable practices. Several years ago, I became a LEED AP through the Canada Green Building Council. It was the only credential available for demonstrating proficiency in sustainability at the time. However, I found that LEED was really focused on vertical, occupied buildings. As my firm’s focus is in the heavy civil and electrical infrastructure sectors, my ENV SP credential gave me a much better understanding of how to integrate sustainability into infrastructure projects. It also helps me to represent my expertise in this area to clients and fellow team members.

(ISI): How are you and your organization using Envision? 

(JU): RAM’s core values include innovation and sustainability. As thought-leaders in our field, understanding Envision is important to staying current on global trends and best practices. Being well-versed in environmental regulations and practices is critical to our business model. Envision offers a framework through which social, environmental, and economic considerations can be evaluated during the construction process.

(ISI): How are you putting your ENV SP credential to use?

(JU): In becoming an ENV SP, I really came to learn and appreciate the Envision framework and the level of detail associated with each credit. While I have yet to apply Envision to an active project as an ENV SP, the knowledge I have gained allows me to bring helpful insights to infrastructure projects across our portfolio.

(ISI): What does sustainable infrastructure mean to you?

(JU): Right now, it means being innovative. It means learning from the past, but not limiting our solutions to past approaches that lacked consideration of social, economic, and environmental implications. It means being forward-thinking in that the infrastructure we are building today will shape the well-being of tomorrow’s communities. Sustainable infrastructure brings benefits to people today and sets up future generations for success.

Fun Facts

(ISI): What are some of your favorite hobbies and interests?

(JU): I enjoy weight training in the gym, playing soccer, and hiking with my dog and wife on the weekends.

(ISI): What is something people would be surprised to know about you?

(JU): I am a certified personal trainer and I’ve built over 20 classic lowrider cars.

ISI Launches Live Webinar Series

New Educational Opportunities that Qualify for ENV SP Credential Maintenance

ISI is pleased to announce the launch of a new live webinar series as a way to engage with the Envision user community and to help Envision Sustainability Professionals (ENV SPs) maintain their credentials. (Each webinar qualifies as one elective education hour towards the annual ENV SP credential maintenance requirements.)

All webinars will be hosted live. Registration is free and those wishing to participate must register in advance.

After registering, participants will receive a confirmation email containing important information about joining the meeting.

Webinar Schedule

Strengthening New York City DEP’s Sustainability Through Programmatic Application of Envision

Presented by Erika Jozwiak, New York City Department of Environmental Protection
Wednesday December 18, 2019 at 1:00 PM Eastern
As the largest combined water and wastewater system in the nation, New York City is in a unique position to advance sustainable infrastructure. Envision has been adopted to assist designers in placing a quantifiable value to the “intangibles”. Several case studies will be presented using both versions 2 and 3 of the Envision framework.



Application of Envision to the Ship Canal Water Quality Project

Presented by Richard Fernandez, Seattle Public Utilities and Jennifer Ninete, HDR
Tuesday January 14, 2020 at 1:00 PM Eastern
This webinar describes the process for implementing the Ship Canal Water Quality Project, a large-scale CSO tunnel solution. It focuses on sustainable components and will show how Envision was used to influence design, implementation and policy.



Reaching Platinum: Examples of Two Large Scale Wastewater Infrastructure Projects

Presented by Lorraine Moreno, City of Los Angeles, Bureau of Engineering, Environmental Engineering Division
Wednesday January 29, 2020 at 1:00 PM Eastern
The City of Los Angeles’ Bureau of Engineering Clean Water Infrastructure Program has completed construction on two large-scale multi-million-dollar projects: the Advanced Water Treatment Facility (AWPF) at Terminal Island Water Reclamation Plant (TIWRP) and the Hyperion Water Reclamation Plant (HWRP) Digester Gas Utilization Project (DGUP). This webinar will discuss the process for achieving Platinum and share some of the lessons learned and the City’s approach to using Envision at a program level.



Applying Envision Retroactively – PANYNJ’s experience with the Bayonne Bridge Navigational Clearance Project

Presented by: Melissa Targett, Port Authority of New York & New Jersey
Wednesday February 12, 2020 at 1:00 PM Eastern
The Envision Rating system provides public agencies with a distinguished method to gather and document efforts to develop Sustainable Projects.  This webinar will discuss the types of policies and processes conducted within public agencies that contribute to the documentation needed for Envision credits and present the Bayonne Bridge Navigational Clearance Project Envision verification with a category by category review. 



Envision the Westminster Way

Presented by Julie Koehler, City of Westminster
Wednesday December 4, 2019 at 1:00 PM Eastern
This webinar will focus on how the City of Westminster, Colorado has taken active steps to increase knowledge of and practice using the Envision framework as we define what it means to Westminster to be sustainable.



Advocating for the Use of Envision by Local Public Infrastructure Agencies

Presented by Michael Bloom, R.G. Miller Engineers, Inc. and Liz Parent, 5engineering, Inc.
Wednesday November 13, 2019 at 1:00 PM Eastern
Have you ever wondered how you or your firm can help advocate for expanded use of Envision? This webinar will provide a summary of the advocacy work conducted in the Houston and Harris County area of Texas since 2013. 



11 Tips for Preparing Envision Documentation

Presented by Jennifer Ninete, HDR
Tuesday October 29, 2019 at 1:00 PM Eastern
Preparing to submit for Envision verification is as much of an art as a science.  The presentation is intended to provide high-level lessons learned that can be applied to developing documentation packages for any Envision project.


San Antonio River Authority’s Martinez IV Wastewater Treatment Plant Earns Envision Silver Award

The Institute for Sustainable Infrastructure (ISI) announced today that the Martinez IV Wastewater Treatment Plant in Saint Hedwig, Texas is the recent recipient of the Envision Silver award for sustainable infrastructure.

The Martinez IV Wastewater Treatment Plant (WWTP) is a new facility built to accommodate the significant projected population growth of the surrounding communities. Without this facility, the increased raw sewage would need to be pumped and hauled by truck on a daily basis to other facilities for treatment, causing significant impacts to soil, watershed quality, air pollution, and carbon dioxide emissions.

Operated by the San Antonio River Authority (River Authority), the plant has a treatment capacity of 250,000 gallons per day (GPD) with potential to expand to two million gallons per day (MGD). The project consists of headworks, biological treatment, clarifiers, ultraviolet (UV) disinfection, and dewatering with final solids being composted. In addition, a new sanitary sewer collection line and associated lift station will connect new residential developments to the wastewater treatment plant. The collection line will consist of approximately 17,000 linear feet of gravity and force main and one lift station.

The River Authority worked in close collaboration with Freese and Nichols and MGC Contractors to deliver this award-winning sustainable project.

<a href=””>Learn more about this project.</a>

LaGuardia Airport Central Terminal Building Replacement Project Earns Envision Platinum

The LaGuardia Airport CTB Replacement Project is the first project to earn Envision recognition under Envision v3 – the latest iteration of the Envision sustainable infrastructure framework developed and managed by the Institute for Sustainable Infrastructure. Owned by the Port Authority of New York and New Jersey (PANYNJ), the LaGuardia Airport CTB Replacement Project earned Envision Platinum, indicating the project delivered a heightened range of social, environmental, and economic benefits to the host and affected communities.

The LaGuardia Airport is vital to the regional economy. It employs approximately 10,000 people on-airport and contributes more than $13 billion in economic activity to the region, generating an additional 100,000 jobs and nearly $5 billion in annual wages and salaries. The airport is located on 680 acres in the New York City Borough of Queens. It is a large commercial airport hub that primarily serves domestic markets. Located only a few minutes from Manhattan, LaGuardia Airport serves more than 19 million people.

PANYNJ embarked on an innovative Public-Private Partnership (P3) to replace the aging and outdated Central Terminal Building (CTB) at the LaGuardia Airport which has been operational since its dedication in 1964. It was most recently modernized and expanded in the 1990s. This is the most ambitious P3 ever undertaken in the region and is the largest P3 ever in the United States. Under the P3, LaGuardia Gateway Partners will design, build, operate, and maintain a new Central Terminal Building (New CTB) facility. The P3 contract includes taking over the operations of the existing CTB and designing, building, financing, operating and maintaining the New CTB through 2050. The project will be financed using equity, debt, passenger facility charges, retail, and airline revenues.

Learn more about this project and why it earned Envision Platinum.

Westside Subway Extension (Purple Line), Section 1

Rendering of the Wilshire/La Brea Station currently under construction [rendering courtesy of Skanska]

LA Metro’sWestside Subway Extension (Purple Line), Section 1 in Los Angeles received the Envision Platinum award for sustainable infrastructure. To reach Platinum status, a project must demonstrate that it delivers a heightened range of environmental, social, and economic benefits to the host and affected communities.

Section 1 of the Westside Subway Extension, also known as the Purple Line Extension, is one of the most significant infrastructure programs in the region. The 3.92-mile segment, comprised of twin bore tunnels, will add three new stations to LA Metro’s rail system. The three additional stations will be located at Wilshire/La Brea, Wilshire/Fairfax, and Wilshire/La Cinega. The project will extend the current Purple Line from Koreatown through Miracle Mile and is expected to be operational in 2023.

Located beneath some of Los Angeles’ most heavily traveled boulevards, this $1.6 billion subway line extension will provide a high-capacity, high-speed, and dependable transportation alternative for commuters to alleviate congested roadways. This project will also deliver significant economic and environmental benefits to the area.

Learn more about the project.

Hope Mills Dam in North Carolina Earns Envision Bronze for Sustainability

The Hope Mills Dam in North Carolina is the recent recipient of the Envision® Bronze award for sustainable infrastructure. This is the first dam project to earn an Envision award, and the second project in the state to earn recognition from ISI for sustainability.

The Town of Hope Mills is located in western Cumberland County south of Fayetteville in North Carolina.  Hope Mills Lake is the centerpiece of the town, one of the main reasons for the town’s existence and a crucial element included in the planned revitalization of the town’s historic downtown district.

The Schnabel/ASI design-build team worked in close partnership with the Town of Hope Mills to deliver this award-winning sustainable project.  Construction of this new dam began April 2016 and was completed in 2018.

Key factors contributing to the Hope Mills Dam project earning an Envision Bronze award include:

  • Collaboration and stakeholder engagement
  • Cost-effectiveness
  • Reducing noise and vibrations

Learn more by visiting the PROJECT PAGE.

Alliant Energy’s Upland Prairie and English Farms Wind Farms Earn Envision Platinum

Two of Alliant Energy’s Wind Farms – Upland Prairie and English Farms – located in Everly and Montezuma, Iowa respectively are the recent recipients of the Envision® Platinum award for sustainable infrastructure.

Alliant Energy, a Midwest energy company engaged in electric generation and the distribution of electricity and natural gas, expects to increase its renewable energy capacity from 20% in 2018 to 33% by 2024. Completion of the Upland Prairie and English Farms Wind Farms with the projected combined energy capacity of 470 megawatts, is a significant contributor to meeting this goal. The electricity generated by these two wind farms will be enough to power approximately 168,000 Iowa homes per year.

“These two projects are part of a larger expansion of wind energy for our customers. We’re using advanced wind turbine technology to provide emission-free and cost-effective energy for our customers for decades,” said Terry Kouba, President of Alliant Energy’s Iowa energy company. “We are continuing to transition our generating fleet to cleaner, more cost-effective sources, which will promote a 40% reduction in carbon emissions by 2030 and an 80% reduction by 2050.”

Alliant Energy worked in close collaboration with General Electric Renewable Energy, Black & Veatch and White Construction to deliver these award-winning sustainable projects. Alliant Energy previously earned Envision awards for their Marshalltown Generating Station and Dubuque Solar projects.


Saudi Aramco’s Ajyal Community Development Project is First in Middle East to Earn Envision Award

Saudi Aramco’s Ajyal Community of Excellence project located in South Dhahran, Saudi Arabia is the first infrastructure project in the Middle East to earn an Envision award for sustainable infrastructure. This project is the recent recipient of the Envision Silver award—an award that signifies the project delivers a range of environmental, social, and economic benefits to the host and affected communities.

The Ajyal Community of Excellence project, known locally as the South Dhahran Home Ownership Program, includes site planning, selection, preparation, environmental monitoring; and design and construction of the infrastructure for the new Ajyal community.

The overall goals of the Ajyal Community Development project include:

  • Promoting a high quality of life by including pedestrian and bicycle paths, attractive landscaping, and public open spaces for residents;
  • Demonstrating leadership in environmental design by optimizing land use and balancing economic, social, and environmental considerations;
  • Smartly locating and constructing utilities and infrastructure to serve the needs of the community today, while also planning for future growth;
  • Creating opportunities for significant commercial and residential development in an area that was previously barren; and
  • Utilizing resources efficiently—including energy, water and materials—during construction and over the operational life of the project.

Saudi Aramco worked in close collaboration with Nesma & Partners, HOK and IBI to deliver this award-winning sustainable project.

Visit the PROJECT PAGE to learn more.

Itinerario ferroviario Napoli-Bari, tratta Frasso Telesino-S. Lorenzo

–English translation follows–

L’itinerario Napoli – Bari è parte integrante del Corridoio ferroviario Scandinavia-Mediterraneo della Rete Transeuropea dei Trasporti (TEN-T). L’intervento di potenziamento in corso di realizzazione consiste nel raddoppio e nella velocizzazione fino a 200 km/h di alcune tratte dell’attuale linea al fine di incrementarne la capacità, la frequenza e la regolarità dei servizi di trasporto, migliorare l’accessibilità del territorio e facilitare gli spostamenti da Bari verso Napoli e Roma: nel 2026, alla conclusione prevista dei lavori, sarà possibile andare da Bari a Roma in c.a. 3 ore e a Napoli in c.a. 2 ore. L’intera opera, realizzata per lotti funzionali che saranno progressivamente attivati all’esercizio, costerà in totale 6,2 miliardi di Euro, in gran parte finanziati dallo Stato Italiano con partecipazione anche di fondi EU. L’opera si pone anche l’obiettivo di piena integrazione del sistema ferroviario con il tessuto regionale costituito da nodi urbani, portuali, aeroportuali e logistici. La linea sarà, inoltre, affiancata da altre infrastrutture lineari in modo da costituire un “Corridoio Multifunzionale”, caratterizzato dalla dorsale ferroviaria, da una dorsale di trasmissione elettrica, che consentirà – nel medio termine – di aumentare il bilanciamento e il carico in tempo reale delle energie rinnovabili e che – nel lungo termine – sarà parte della “European Supergrid 2050”, e da una dorsale digitale che consentirà di connettere con fibra ottica i territori attraversati e le stazioni ferroviarie.

La certificazione Envision ottenuta da RFI è relativa alla tratta Frasso Telesino – Telese – S. Lorenzo dall’estensione di c.a. 21 km: essa collegherà le aree dei Comuni beneventani di Frasso Telesino, Telese e San Lorenzo Maggiore, attraverso una serie di interventi di raddoppio, in variante e in affiancamento della linea esistente, di realizzazione di nuove stazioni ferroviarie, ma soprattutto di potenziamento dell’accessibilità alle aree interessate dal progetto.

L’orientamento della progettazione e della realizzazione delle opere verso la sostenibilità contribuisce a mitigare gli impatti sulle comunità interessate dal progetto e sull’ambiente, a ridurre i costi a vita intera dell’opera, inclusi quelli di realizzazione, di gestione e manutenzione della stessa, e ad aumentare l’efficienza del progetto conseguendo importanti risparmi in termini economici e temporali. Tale impegno è stato ratificato dal raggiungimento del livello massimo di certificazione “Platinum”, al termine di un processo condotto con successo da RFI grazie anche alle sinergie attivate con la Regione Campania attraverso un tavolo tecnico di coordinamento dei numerosi attori coinvolti con gli obiettivi di  identificare gli elementi di sostenibilità del progetto e di massimizzare gli effetti di sviluppo territoriale indotti dall’opera e dalla sua integrazione con le altre infrastrutture lineari.

Tra i fattori che hanno contribuito al raggiungimento del massimo livello di certificazione conseguibile, figurano:

•      la condivisione con gli Stakeholder: infatti la nuova linea AV/AC Napoli – Bari è stata concepita come un’opera che connette e non attraversa soltanto i territori. La connessione con le aree industriali e produttive permetterà di generare importanti iniziative logistiche nelle aree del Sannio e dell’Irpinia. Uno degli aspetti che abbiamo curato maggiormente con il protocollo Envision è stato quello di elaborare un quadro condiviso e trasparente verso l’esterno con tutti gli Enti Locali per realizzare un progetto che avesse ricadute concrete per le comunità locali. In questo modo è stato possibile promuovere e valutare sinergie, opportunità ed efficienza dell’opera e dell’intero contesto infrastrutturale, ambientale, economico e sociale. Inoltre, accorciando notevolmente le distanze tra le grandi aree metropolitane del Sud e riducendo i tempi di percorrenza tra Bari, Napoli e Roma. L’opera potrà avere anche l’effetto di rivitalizzare le aree oggi soggette a fenomeni di spopolamento.

•      la salvaguardia degli elementi peculiari del territorio: la progettazione dell’intervento è stata, infatti, elaborata secondo il principio fondamentale di tutela dell’ambiente e nel rispetto degli ambiti territoriali ed ambientali interferiti. Il progetto del tratto Frasso Telesino – San Lorenzo preserva la qualità paesaggistica ed ecologica dei luoghi, prevedendo il riutilizzo e il recupero della maggior parte dei materiali di scavo, minimizzando al tempo stesso le interferenze con il territorio attraversato e assicurando elevati standard tecnico-qualitativi in fase realizzativa. La scelta del tracciato, tra le diverse alternative e varianti possibili, ha anche privilegiato soluzioni con impatti minori sugli habitat esistenti, salvaguardando ad esempio le aree di esondazione dei principali corsi d’acqua presenti sul territorio e cercando di minimizzare gli impatti sulle aree di produzione vinicola locale. Sono state privilegiate scelte progettuali come lo spostamento del tracciato, la disposizione delle pile dei viadotti esterne all’alveo, o la rimozione di alcuni tratti esistenti, sostituiti da parti in galleria, e da interventi di mitigazione come la rinaturalizzazione delle aree, il ripristino di fasce ripariali e delle attività agricole.

•         l’importanza della resilienza: la progettazione ha affrontato anche temi come la resilienza dell’opera ferroviaria nei confronti delle possibili minacce e vulnerabilità legate alle variazioni climatiche, alle condizioni geomorfologiche delle regioni interessate, ma anche alla variazione delle condizioni socio-economiche.


The Naples-Bari route is an integral part of the Scandinavia-Mediterranean railway corridor of the Trans-European Transport Network (TEN-T). The expansion work currently being carried out consists of doubling and speeding up to 200 km / h of some sections of the current line in order to increase the capacity, frequency and regularity of transport services, improve the accessibility of the territory and facilitate travel from Bari to Naples and Rome: in 2026, at the expected completion of the works, it will be possible to go from Bari to Rome in about  3 hours and in Naples in about 2 hours. The entire work, carried out for functional lots that will be progressively activated during the year, will cost a total of 6.2 billion euros, mostly financed by the Italian State with participation also of EU funds. The work also aims to fully integrate the railway system with the regional context  made up of urban, port, airport and logistics nodes. The line will also be flanked by other linear infrastructures in order to constitute a “Multifunctional Corridor”, characterized by the railway backbone, by an electric transmission backbone, which will allow – in the medium term – to increase the balancing and the load in real time of renewable energies and that – in the long term – will be part of the “European Supergrid 2050”, and of a digital backbone that will allow to connect the territories crossed and the railway stations with optical fiber.

The Envision-verification obtained by RFI relates to the Frasso Telesino – Telese – S. Lorenzo section of the extension of about 21 km: it will connect the areas of the Benevento Municipalities of Frasso Telesino, Telese and San Lorenzo Maggiore, through a series of doubling interventions, in variant and alongside the existing line, of the construction of new railway stations, but above all of strengthening the accessibility to the areas affected by the project.

The orientation of the design and construction of the works towards sustainability contributes to mitigating the impacts on the communities affected by the project and on the environment, to reduce the lifetime costs of the work, including those of construction, management and maintenance of the same , and to increase the efficiency of the project achieving important savings in economic and temporal terms. This commitment was ratified by the achievement of the maximum level of “Platinum” certification, at the end of a process conducted successfully by RFI thanks to the synergies activated with the Campania Region through a technical coordination table of the numerous actors involved with the objectives of identifying the elements of sustainability of the project and to maximize the effects of territorial development induced by the work and its integration with other linear infrastructures.

The factors that contributed to the achievement of the maximum achievable certification level include:

• sharing with stakeholders: in fact, the new AV / AC Naples – Bari line was conceived as a work that connects and does not cross only the territories. The connection with the industrial and production areas will allow to generate important logistic initiatives in the areas of Sannio and Irpinia. One of the aspects that we have taken care of the most with the Envision protocol has been to elaborate a shared and transparent framework outwards  with all the Local Authorities to carry out a project that had concrete repercussions for the local communities. In this way it was possible to promote and evaluate synergies, opportunities and efficiency of the work and of the entire infrastructural, environmental, economic and social context. Furthermore, by considerably shortening the distances between the large metropolitan areas of the South and reducing travel times between Bari, Naples and Rome. The work may also have the effect of revitalizing the areas now subject to depopulation.

• safeguarding the peculiar elements of the territory: the planning of the intervention was, in fact, elaborated according to the fundamental principle of environmental protection and in respect of the interfered territorial and environmental areas. The project of the Frasso Telesino – San Lorenzo section preserves the landscape and ecological quality of the places, foreseeing the reuse and recovery of most of the excavated materials, minimizing at the same time the interferences with the territory crossed and ensuring high technical and qualitative standards in implementation phase. The choice of the route, among the different alternatives and possible variants, has also favored solutions with minor impacts on existing habitats, safeguarding for example the areas of flooding of the main waterways present in the territory and trying to minimize the impacts on the local wine production areas. Preference was given to design choices such as the displacement of the route, the arrangement of the stacks of viaducts outside the riverbed, or the removal of some existing sections, replaced by tunnel parts, and mitigation measures such as the re-naturalization of areas, the restoration of riparian strips and agricultural activities.

• the importance of resilience: the project has also addressed issues such as the resilience of the railway work towards possible threats and vulnerabilities linked to climatic variations, the geomorphological conditions of the regions concerned, but also the variation of socio-economic conditions.