US-60 Over Railroad
The project objective was to replace a 650ft rolled beam span bridge considered to be structurally deficient and to minimize roadway impacts. The bridge location is on US-60 within the city limits of Enid in Garfield County, approximately 0.9 miles north of US-412. The bridge crosses nine sets of railroad tracks and two city streets. An engineering study was performed to determine the most economical solution for the bridge replacement, including substructure locations and span configurations to avoid existing bridge foundations, railroad tracks, utilities and city streets. The proposed bridge structure required the profile to be raised approx. 4ft and necessitated the reconstruction of the roadway approaches 750ft to the south and 200ft to the north. The roadway was replaced with a 4-lane curb and gutter section of dowel jointed concrete pavement, raised concrete median dividing strip and sidewalks.
The proposed bridge was a 120’-126’-160’-123’-85’-86’ continuous plate girder and prestressed concrete beam span bridge with 58’ clear roadway on the existing alignment. The bridge was constructed in three phases. The south deep abutment of the existing bridge was modified and left in place to act as a retaining wall to reduce the required length of the new bridge. CEC services included bridge design, roadway design, retaining wall design, survey, lighting design, traffic control and construction sequencing.