Nevada State Route 171
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| Airport Spur Connector | ||||
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| Maintained by NDOT and Clark Co. Public Works | ||||
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The McCarran Airport Connector (MAC) is a limited-access roadway system located in Paradise, an unincorporated town in the Las Vegas Valley, Clark County, Nevada, United States. Composed of State Route 171 (SR 171), the Airport Tunnel, and arterial streets, the airport connector provides vehicular access to the passenger terminals at McCarran International Airport.
The McCarran Airport Connector begins at an interchange with Interstate 215 (exit 10) in Paradise. From there, the route follows unsigned State Route 171 as it transitions to a below-ground freeway alignment. The connector crosses underneath several local streets and a branch line of the Union Pacific Railroad as it heads northward towards the airport. SR 171 encounters a half-diamond interchange with Sunset Road (SR 562) before entering the airport, allowing drivers to shortcut between I-215 and Sunset Road. The state highway designation ends 0.639 miles (1.028 km) north of the interstate interchange at the south portal of the airport tunnel.
The end of State Route 171 is adjacent to the beginning of the Airport Tunnels. One tunnel is provided for northbound traffic with southbound traffic using a second tunnel; a third tunnel between them is reserved for future transit use. The tunnels continue northward, crossing under the east–west runways and taxiways of the airport and emerging on the opposite side.
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