NDOT Breaks Ground on $73 Million “Centennial Bowl” Upgrade in Las Vegas
LAS VEGAS, NEV. – The Nevada Department of Transportation (NDOT) today broke ground on the $73 million next phase of the “Centennial Bowl” interchange – where U.S. Highway 95 meets the 215 Beltway – in northwest Las Vegas. Las Vegas Paving is the general contractor. The construction contract is valued at $61.5 million.
“This interchange connection greatly enhances traffic, mobility and motorist safety while establishing a new gateway corridor for the Centennial area,” said NDOT Director Rudy Malfabon. “Currently, over 107,500 vehicles daily travel the ramps and freeways at U.S. 95 and the 215 Beltway, and it’s only expected to grow in the future.”
The project calls for removing part of the Oso Blanca Road ramp and the old north-to-west loop, thereby making room for three new freeway flyover ramp connections, including: eastbound 215 Beltway to U.S. Highway 95 southbound as well as southbound U.S. Highway 95 to eastbound 215 Beltway, and northbound U.S. Highway 95 to 215 Beltway westbound.
Flyover ramps enable direct freeway-to-freeway connections while still maintaining highway travel speeds for greater efficiency and safety. Also, the structures require little right-of-way and eliminates the current stop-and-go surface street travel currently needed when navigating the interchange.
“This project helps create a reliable transportation network that enhances cultural and economic access in the northwest valley,” said Clark County Commissioner Larry Brown, who represents District C. “It improves accessibility, mobility and safety for residents and businesses.”
Construction entails building the state’s second longest bridge. The 75-foot-tall by 39-foot-wide concrete box girder structure will measure 2,635 feet or the equivalent of seven football fields. The two-lane flyover bridge will connect north-to-west freeway traffic. Plans also call for constructing a south-to-east flyover roughly the same length as 26 bowling lanes laid end-to-end. Other improvements entail drainage upgrades and new lighting, landscaping and Intelligent Traffic System (ITS) enhancements.
The project will create up to 150 jobs during the peak of construction activity. The upgrades are being underwritten through a combination of federal ($19 million) and state ($54 million) funds. Work is scheduled to finish in the Spring of 2021.
Total Project Cost: $73 million
Construction Cost: $63.5 million
Construction Jobs: 150 (peak workforce), or enough people to staff 12 pro basketball teams
Schedule: 450 working days
Asphalt: 28,520 tons, or about 250 times the weight of a Blue Whale
Steel: 5.2 million pounds, or the equivalent of 50,000 suits of metal armor
Concrete: 9,200 square yards, or enough to pave 575 driveways
Earthwork: 400,000 cubic yards, or enough dirt to fill 3,000 average-sized swimming pools
Barrier Rail: 30,000 lineal feet, or 1.3 times the length of the Las Vegas Strip
Painting: 60,878 square yards, or three times the size of The Kennedy Center
South-to-East Connector: 60 feet tall, 31 feet wide, and 1,655 feet long, or the equivalent length of 26 bowling lanes laid end-to-end
North-to-West Connector: 75 feet tall, 39 feet wide, and 2,635 feet long, or the equivalent length of seven football fields laid end-to-end
Riprap Landscaping: 1,134 cubic yards, or enough rock to fill 1,000 hot tubs