Big Cottonwood Creek Bridge @ MM4

What secrets does a creek hold? The Big Cottonwood Creek, flowing beneath the Big Cottonwood Creek Bridge @ MM4, whispers stories of a past intertwined with the growth of Salt Lake City. Here at MM4, we stand at a point where nature’s rhythm meets human progress. The Big Cottonwood Creek Bridge @ MM4 isn’t just a crossing; it’s a silent observer of the creek’s journey. Big Cottonwood Creek, as Captain Stansbury’s 1852 map reveals, was once known by indigenous names like “we-en-de-quint” or the Goshute name “pi’a-bai-gwi-ci,” meaning “big stream.” The creek, originating high in the Wasatch Mountains, carves its way through Big Cottonwood Canyon, eventually reaching this point beneath the Big Cottonwood Creek Bridge @ MM4 before joining the Jordan River. The creek’s path, roughly 25.3 miles long, includes a short buried section of 0.4 miles. Sadly, a significant portion, almost 25 miles, is considered impaired. This waterway, vital to the region, faces challenges from cadmium, copper, E. coli, and a degraded aquatic habitat. The Big Cottonwood Creek, despite its challenges, supports a variety of life. Rainbow, brook, brown, and the native Bonneville cutthroat trout swim in its waters. The Utah Division of Wildlife Resources stocks the creek with rainbow trout near Silver Lake, recognizing its importance as a Class II Fishery. This designation highlights the creek’s value for recreation, especially its proximity to a metropolitan area, making it a valuable resource for anglers. Imagine the early settlers relying on the creek, drawing water for their needs. The creek’s generous flow, an average peak of 350 cubic feet per second, provided ample resources. Yet, even in drier times, a low flow of around 31 cubic feet per second sustained life and activity. The Big Cottonwood Creek has witnessed the transformation of the surrounding landscape. The once abundant cottonwood trees, which gave the creek its name, were heavily logged for timber in the 19th century, supplying materials for sawmills and even railroad ties used in the transcontinental railroad. This activity left a mark on the canyon’s ecosystem. The Big Cottonwood Creek Bridge @ MM4 stands as a reminder of how nature and human needs intersect. It carries US-89 (SR-89), facilitating travel and commerce, while below, the creek continues its timeless flow. The bridge, built in 1957 and reconstructed in 1974, sees a daily flow of over 30,000 vehicles, connecting communities and enabling access to the canyon’s recreational offerings. As we stand here at the Big Cottonwood Creek Bridge @ MM4, we’re not just observing a bridge and a creek, we’re witnessing the convergence of history, nature’s resilience, and the ongoing story of a community shaped by the waters that flow beneath.