Complex sentence: The non-freeway segment of SR 94 that continues east through the mountains to I-8 near Boulevard is known as Campo Road; this section served as a wagon road providing access to eastern San Diego County as well as Imperial County.
Split into simpler sentences: The non-freeway segment of SR 94 that continues east through the mountains to I-8 near Boulevard is known as Campo Road. The Campo road served as a wagon road providing access to eastern San Diego County as well as Imperial County.