Officials broke ground Monday on the city's newest light-rail line.

The first segment of Sacramento Regional Transit District's "green line" will run just more than a mile, from downtown north to the River District. Eventually, the line will carry public transit riders to Sacramento International Airport.

"It's the first great step to a complete transportation system. This is going to connect everything together," said U.S. Rep. Doris Matsui, standing at the future site of the line's initial terminus, 7th Street and Richards Boulevard. "We have an investment in an expanded airport. We're going to have to have another way to get there — and that's going to be light rail."

The line will start at the Sacramento county courthouse, Eighth and H streets, and head to the future regional transportation center and the Railyards, then head north along Seventh Street before reaching the terminus at Township 9 in the Richards Boulevard Redevelopment Area. The line is expected to begin operating in November 2010.

The line's expansion to the airport isn't expected to be built for eight to 10 years. While local, state and federal funding is expected to be used to build the rest of the line, the first stretch will be financed entirely by local funding, said Mike Wiley, RT General manager.

Measure A sales tax funds will pay for most of the project to build the 1.1 miles of single track and two stations, estimated to cost more than $44 million. The Sacramento Transportation Authority sold bonds for several projects, including this one, and will loan some of the money to RT until the Measure A money becomes available, said Sacramento City Councilman Steve Cohn.

Wiley praised Matsui, Mayor Kevin Johnson, Cohn, Sacramento City Councilman Ray Tretheway and Sacramento County Supervisor Roger Dickinson for their support of public transit and light rail.

The green line is expected to bring more than just riders. The line is expected to bring money through economic development by spurring infill development in the Railyards and the River District, and by eventually connecting downtown to the airport, said Cohn and others.

For that reason, as well as its contribution to clean air and reduced traffic congestion, the line truly will be a "green" line, Cohn said.

A station will be added at the Railyards eventually, where 50,000 people are projected to one day live and work. The terminus will be at Township 9, being built by Steve Goodwin and other developers. His company reportedly will pay part of the cost of the station. When asked about the funding breakdown, RT spokesperson Alane Masui pointed only to board meeting documents on the agency's Web site.

"This really is a dream come true for a lot of us who've worked on this," Goodwin said.

Suzanne Hurt is a staff reporter for The Sacramento Press.