The NW-SE streets are numbered, while the NE-SW streets are named. The named streets start at the intersection of Colfax Avenue and Broadway with the block-long Cheyenne Place. The numbered streets start underneath the Colfax and I-25 viaducts. There are 27 named and 44 numbered streets on this grid. There are also a few vestiges of the old grid system in the normal grid, such as Park Avenue, Morrison Road, and Speer Boulevard. Highways Denver is primarily served by the interstate highways I-25 and I-70. The intersection of the two interstates is referred to locally as "the mousetrap." I-70 runs east-west from Utah to Baltimore, Maryland. I-25 runs north-south from the New Mexico border through Denver to Buffalo, Wyoming. I-225 traverses neighboring Aurora and connects with I-25 in the southeastern corner of Denver. Additionally, I-76 begins from I-70 just west of the city of Arvada. It intersects I-25 north of the city and runs northeast to Nebraska where it ends at I-80. U.S. Highway 6 connects downtown Denver to the suburb of Golden. A highway expansion and transit project, dubbed "T-REX", was recently completed along the I-25 corridor. The project included the addition of extra freeway lanes, the redesign of several highway overpasses, and a light rail line along the I-25 corridor between downtown Denver and the Denver Technological Center. The massive project was finished in the Fall of 2006, ahead of schedule and under budget. Public transit Mass transportation throughout the Denver-Aurora metropolitan area is managed and coordinated by the Regional Transportation District (RTD). RTD currently operates more than 1,000 buses serving 10,000 bus stops in 38 municipal jurisdictions. Additionally, RTD operates seven light rail lines (the C Line, D Line, E Line, F Line, H Line, R Line, and the W Line) as well as two commuter rail lines serving a total of 53 stations. The current RTD local fare is $2.25. FasTracks, an expansion project approved by voters in 2004, will allow the light rail to serve cities such as Lakewood, Golden, and Aurora. Commuter rail lines will serve Boulder, Longmont, and the Denver International Airport, augmenting existing light rail extending from the downtown area to C-470 servicing the Denver suburbs. Inter-city rail Passenger train service to Denver is provided by Amtrak's California Zephyr, which runs from Chicago to the San Francisco Bay Area with major stops in Omaha, Denver, Salt Lake City, and Reno. Additionally, the