Great Colonnade at Palmyra The western colonnade was the first section to be built. Inscriptions found on some columns confirm that works started before 158 CE. The straight avenue ran in northwest-southeast direction and stretched for , the longest of the three sectors. The main avenue's width was while the side streets were in width. The colonnade's western terminus, the West Gate, was built in the late second-century CE. The avenue also connected in a right angle to the Transverse Colonnade which stretched to the Damascus Gate in the south. The eastern sector of the Great Colonnade started at the Monumental Arch and stretched
I-5 Colonnade section featuring Cyclone and The Octagon Of Death, a rock jumble descent named the Waterfall, and Downhill/Freeride lines including The Offramp, Holy Chute, and Pips Hips. The I-5 Colonnade bike park has paved the way for other mountain bike facilities in the state of Washington and beyond. Using the available space under the I-5 freeway has been heralded as a highly innovative approach to bring mountain biking to the intercity environment. The park transformed the area from a drug infested encampment to a refuge for outdoor recreation. I-5 Colonnade I-5 Colonnade in Seattle, Washington, United States, is a city park