County Route E2 begins as Grant Line Road at the interchange with State Route 99. It heads northeast on a rural two-lane roadway, skirting the city limits of Elk Grove to the west. E2 then turns north onto Sunrise Boulevard, where it remains a two-lane roadway, intersecting State Route 16 (also known as Jackson Road). The route enters the city of Rancho Cordova and dramatically widens to six lanes near the intersection of Kiefer Boulevard. This stretch of roadway was recently widened between Kiefer Boulevard and Douglas Road to accommodate increasing traffic to the surrounding new housing development. The route turns northwest just after Douglas Road and then turns north again approaching White Rock Road. It approaches U.S. Route 50 at an interchange, then skirting the community of Gold River to the east. The route leaves Rancho Cordova, crossing the American River and into the community of Fair Oaks. It enters the city of Citrus Heights after Madison Avenue and is reduced to four lanes after intersecting Greenback Lane (County Route E14). It remains four lanes for the remainder of the route, entering Placer County and the city of Roseville. The route becomes Sunrise Avenue at the county line for a few miles, ending at I-80 and Douglas Boulevard.
County Route E3 is a county road in Placer and Sacramento counties that connects U.S. Route 50 near Rancho Cordova to Interstate 80 near Rocklin. It is carried by Hazel Avenue from the U.S. Route 50 interchange to the Sacramento/Placer county line. It is carried by Sierra College Boulevard from the Sacramento/Placer county line to the Interstate 80 interchange.
County Route E14 begins on Elkhorn Boulevard at the interchange with State Route 99 north of Sacramento. It starts out as a two-lane roadway, skirting the northern end of the North Natomas development of Sacramento. As it enters the rural community of Rio Linda, the roadway expands to four lanes and remains at least four lanes throughout the remainder of the route. The landscape changes from rural to suburb as it passes through North Highlands and Foothill Farms, where the roadway expands to six lanes at Don Julio Boulevard. As it reaches the interchange with Interstate 80, the route becomes Greenback Lane. Shortly thereafter, it enters the city of Citrus Heights and remains in the city for 3.5 miles (5.6 km). As it exits Citrus Heights and into the community of Fair Oaks, the roadway is reduced to four lanes as it reaches its terminus at Hazel Avenue (County Route E3) in Orangevale. The roadway itself continues as Greenback Lane towards the city of Folsom.
The name "greenback" refers to the use of paper money for financial transactions at a time when gold and silver coin was the preferred rate of exchange. The property that Greenback Lane lies on was bought with greenback dollars (United States Note). The owner is said to have wished to be paid with coin, and became angered when he was not, hence the name "Greenback Lane."
Construction to expand Greenback Lane between Dewey Drive/Van Maren Lane and Auburn Boulevard in Citrus Heights from four to six lanes was completed in 2008, creating an entirely six lane thoroughfare within the city of Citrus Heights.