The new $3.6bn American-built subway system, known as the Green Line, has been delayed for two years because of budget cuts.

But with the Federal Transit Administration (FTA) and the Metropolitan Transportation Authority (MTA) on board to pay for it, the new line will be operational next year. 

The new system will run from Washington DC to Boston. 

It will run along the Potomac River from Bethesda, Maryland, to Washington DC. 

“It is a really beautiful piece of infrastructure,” MTA Chairman David Samson told the Washington Post. 

In the future, the US could extend the Green line to Boston and Washington, DC, in order to increase transit capacity for more people.

The new line has been touted as a solution to a growing shortage of transit service. 

Its rapid growth has prompted comparisons to New York’s elevated subway system. 

But it will cost $3 billion and take 18 years to complete. 

There are no federal funding streams available for the GreenLine. 

According to the Washington Metropolitan Area Transit Authority (WMATA), the $3bn is part of a $2.2bn capital project that the MTA will carry out. 

Some $1.2 billion has been earmarked for the project. 

That means, of the $1bn in federal funding, $800 million will be paid by the Federal Government and $400 million by the states. 

MTA spokeswoman Megan Williams said that the money would be spent on the project by WMATA, WMATA’s contractors, and the state. 

However, Williams said, the Federal money would not cover the cost of the system’s construction, maintenance and operating costs. 

This funding will be used to fund construction, operation, maintenance, and repairs of the entire system.

The federal government is also funding the construction of the Purple Line, which is expected to start operating in 2021. 

 “In the coming months, we will announce the final cost and estimated timeline of the Green and Purple lines,” Williams said. 

Other federal money will also be used for the US Metro. 

A total of $1 billion will be spent to build the new Red Line extension, which will be a light rail extension between the Washington and Boston metro areas. 

Additionally, $1 million will go towards the construction and operation of the Silver Line extension to Boston from Washington, D.C. These new lines will run between Boston and New York. 

(Image source: US Metro) The $3billion capital project has been praised by transportation advocates and transit advocates for its cost savings, as well as its potential to increase the speed of transit in the US. 

As reported by the New York Times, the Green-line extension will cost more than $300m and take nine years to build. 

Although there is no official estimate of the cost, Williams told the Post that it was estimated that it would cost $1,200 per person per day. 

So, according to Williams, the cost would be about $400 per person daily for the entire Green Line extension. 

Williams said the money was used for “safety and security improvements”.

“The cost is going to be about the same,” Williams told NBC Washington. 

Of the $2bn spent on a $3b extension, $600m has been set aside for the Purple and Red lines. 

$600m is set aside to build Green Line Green Line in 2021, with $1m allocated for the Blue Line extension and $100m allocated to the Red Line. 

Another $100 million will fund the Red and Purple line extensions, with the money earmarked to complete construction in 2022. 

Overall, Williams estimates that the US is on track to have one of the fastest-growing rail systems in the world. 

Transportation advocates have called for the Federal government to allocate funding for the construction costs of the new lines, which are expected to cost $800m. 

An update to the Federal Budget is expected next month.