Pacific Coast Conference charter members were the University of California (now University of California, Berkeley), the University of Washington, the University of Oregon, and Oregon Agricultural College (now Oregon State University). Rivalries between the Pacific Coast Conference schools grew beyond athletics, with animosities around educational, financial and state rivalries. The tensions between the California and Northwest schools extended to Edwin Pauley, a regent of the University of California, disliking the member universities in the Pacific Northwest enough to advocate that the California institutions leave the Pacific Coast Conference to form a "California Conference." The PCC had a history of being very strict with
Washington State Route 510 also became (I-5) in 1968. SR 510 between I-5 and Pacific Avenue was reconstructed and widened in late 2003, with the addition of a roundabout at the Pacific Avenue intersection. The I-5 interchange will be replaced in 2020 with a diverging diamond interchange that began construction in October 2018. The interchange will be the first diverging diamond constructed in Washington and is estimated to cost $72 million, with funding provided by the state legislature's 2015 Connecting Washington package. State Route 510 Alternate, also known as the Yelm Loop, is a partially completed bypass of Yelm. The first, section opened to