Construction began on the SR 94 interchange in October, and continued into late 1975, at a cost of $11 million (about $ in dollars). Parts of the interchange with SR 94 were open by July 20. The City of Chula Vista considered SR 125 as possibly having scenic value when constructed, and considered asking the state to add it to the state highway system; this influenced a rule that construction projects near possible scenic routes in the city had to take natural aesthetics into account. The La Mesa City Council asked the state to modify the interchange with I-8 in July; the original interchange did not allow for access to SR 125 from I-8 east or to I-8 west from SR 125.