Business Loop I-5 - Tumwater, Olympia and Lacey

The business loop headed east from Exit 102 on Trosper Road to connect with old U.S. 99 along Capitol Boulevard and Capitol Way north to the Olympia city center. The route lined old U.S. 99 east from there along the couplet of 4th and State Avenues to Martin Way through the city of Lacey. The north end tied into Interstate 5 at a wye interchange (Exit 114).