Spring Field Review Details

Structures Bridge Sites

Title	County	Location

Spring Field Review Site 12 2007	Wake	Bridge #137 on SR1404 over Middle Creek
~ Bent caps were excessively deep (4'-0") for cored slabs. ~ Traffic speed appeared excessive for the one bar metal rail. ~There were transverse cracks over the bents, despite the ends of the cored slabs being fixed and the joints being filled with grout. The Bridge Maintenance Unit suggested utilizing pave-prep tape over the joints, but it was pointed out that this detail is prone to asphalt spalls. ~ There were questions on why the plans showed hold-down plates at each corner of the bridge. ~ The rip-rap slope protections appeared to have migrated as a result of being undersized. A/I ~ Construction will provide a list of cored slab bridges where all ends were fixed, for the purpose of monitoring the condition of the asphalt overlay.
~ 3 - 50'span cored slab structure with an asphalt wearing surface ~ 3.5% superelevation ~ Both ends of the cored slabs were fixed and the 1½" joints were filled with grout.