The Interstate 8 route was realigned from Arnold Way onto Alpine Boulevard as it passed through
Alpine and the
Viejas Indian Reservation, before entering the
Laguna Mountains and the
Cleveland National Forest, mostly paralleling the alignment used by old
US 80. A portion of old US 80 that followed the grade eastward from
Pine Valley up to the Sunrise Highway junction had to be closed for construction. A cutoff road (now named old US 80) direct from Pine Valley eastward to the Sunrise Highway (a route to Mt. Laguna) was made prior to freeway construction. Near the Laguna Junction was a roadhouse cafe of the same name for travelers that existed from 1916 until it was removed in 1971 to provide land for the I-8 interchange. The
United States Geological Survey now cites "Laguna Junction" as a historical place name replaced by "Laguna Summit". A section of old US 80—with the first few miles signed as
SR 79—continues to serve as access to the communities of
Descanso,
Guatay, and
Pine Valley; SR 79 intersected US 80 east of Descanso. ==References==