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Bridqes Across the Stream There are a total of five vehicular bridges and two railroad bridges across fountain Creek in the 21.48 mile study reach. Photographs of the bridges are shown in figures 2 through 4. The Pinon County Road Bridge at Mile 14.95 is the only bridge in the upper portion of the study reach. The College Road Bridge on Colorado State, Highway 47 ia located at Mile 3.98 near the northern outskirts of Pueblo's urban area. The U.S. Highway 50, 8th Street, and 4th Street vehicular bridges are in Pueblo at Miles 2.65, 1.69, and 1.43, respectively. The Atchison, Topeka, and Santa fe Railway and Missouri Pacific Railroad bridges ars Just upstream of the fountain Creek-Arkansas River confluence in Pueblo at Miles 0.81 and 0.44, respectively. Table 2 lists pertinent elevations for the bridges, and shows their relation to the crests of the Standard Project flood and Intermediate Regional flood. Two of the factors affecting the depth of flow at bridges during a flood are the degree of structural obstruction and waterway opening clogging. These conditions cannot be accurately forscast; so it is assumed that all bridge structures will stand and limitsd clogging is to be expected which may change estimated flood limits. The Pinon County Road Bridge is a 400-foot 13-span structure. The roadway would lack 0.2 feet of being overtopped by the Standard Project flood, and 4.2 feet by the Intermediate Regional flood. Head losses at the bridge would be 7.3 feet during the Standard Project flood and 6.3 feet during the Intermediate Regional flood. The recently constructed Colorado State Highway 47 traverses the fountain Creek flood plain over two bridges and a high approach fill. The larger bridge is a 350-foot 4-span structure over the creekbed; the smaller 210-foot 4-span structure is a viaduct for railroad tracks. The Standard Project flood would overtop the roadway by 3.9 feet, and the Intermediate Regional 14