Nevada State Route 578
SR 578 highlighted in red, remainder of Washington Avenue in blue
|Maintained by NDOT|
|Length||0.661 mi  (1.064 km)|
|West end||I‑15 / US 93 in Las Vegas|
|East end||Las Vegas Boulevard in Las Vegas|
State Route 578 begins at the Interstate 15 (I-15) and U.S. Route 93 (US 93) interchange with Washington Avenue, D Street and City Parkway (exits 43 and 44). From there, it follows Washington Avenue eastward, traveling under the Union Pacific Railroad tracks to intersect Main Street. SR 578 passes by the southern Nevada district headquarters of the Nevada Department of Transportation as it heads eastward. The route comes to an end at the Washington Avenue intersection with Las Vegas Boulevard (former SR 604).   Located at the intersection of SR 578's eastern terminus are the Grant Sawyer Building (a southern Nevada state office complex), Cashman Center and Cashman Field (home to the Las Vegas Lights FC soccer team) and the Old Las Vegas Mormon Fort State Historic Park (the first permanent settlement in the Las Vegas area). 
|27.00||43.45||I‑15 / US 93 – Los Angeles, Ely, Salt Lake City||Interchange; western terminus; I-15 exits 43 and 44|
|27.66||44.51||Las Vegas Boulevard||Eastern terminus; former SR 604/ US 91/US 93|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
RTC Transit Routes 104, 119, 208, and 214 function on this road.
- Nevada Department of Transportation (January 2017). "State Maintained Highways of Nevada: Descriptions and Maps". Retrieved March 11, 2017.
- Google (21 July 2011). "Overview of SR 578" (Map). Google Maps. Google. Retrieved 21 July 2011.
- Nevada State Maintained Highways: Descriptions, Index and Maps. Nevada Department of Transportation. January 2001. p. 99.
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