Eureka on the High Bridge. A late August afternoon finds the 1875-vintage Eureka & Palisade Number 4 hauling a passenger extra across the famous High Bridge above the Animas River at Tacoma, Colorado. Aptly named, this bridge is the tallest of all of the Animas crossings on the old D&RG Silverton Branch. Originally built as a wooden trestle in 1881, it was quickly replaced with the iron structure you see here. The bridge remained unaltered until the D&RGW sold the Silverton Branch to Charles Bradshaw in the 1980s and the line became a tourist operation known as the Durango & Silverton Narrow Gauge Railroad. Under Bradshaw, this bridge was strengthened with the addition of a lot of external bracing, in order to accommodate the large K-36 and K-37 locomotives that would later be used in high-volume passenger operations on this line.