US-59 over Shawnee Creek and Overflow
GUY provided the bridge design for this project to replace the superstructure and widen the roadway of two bridges. The first bridge was 22ft clear roadway to 40ft clear roadway of a 56ft-68ft-56ft continuous steel I-beam bridge, 30° skew. The second bridge was 22ft clear roadway to 40ft clear roadway of a 36ft steel I-beam bridge, 0° skew. Both bridges were completed in phases, keeping one lane of traffic open at all times.
The Shawnee Creek bridge only had three existing beams, so an additional helper beam was placed for support during Phase I. This was needed to meet the requirement of maintaining at least three beams under any section of bridge under traffic during phased construction. The helper beam was added between the two existing beams under the Phase I portion of the bridge remaining to carry traffic.
GUY’s bridge design for this project was incorporated with roadway and traffic plans completed by ODOT.
Le Flore County, OK