Spring Field Review Details

Structures Bridge Sites

Title	County	Location

Spring Field Review Site 13 2007	Guilford	Bridge #20 on SR 4121 over Deep River
~ 3 span(65'-85'-65') Type IV girder bridge with 4' f drilled piers. Observations and Points of Discussion: ~ This site utilized a rock causeway for construction access, but the temporary detour bridge was required to span the stream. ~ All Units were encouraged to promote awareness of such errors among their staff and the regulatory agency staff. ~ There was some general discussion on the costs of on-site detours, with this site being cited as an example because of the requirement to span the stream and to provide a pedestrian walkway by supplemental agreement. There was consensus to include verbiage, in the planning documents, permit applications, and contract, that will avoid similar issues in the future. ~ Temporary bridge had a pedestrian walkway, which the city requested for access to a nearby park. A/I ~ Structure Design will discuss the importance of carefully reviewing and discussing permits with their staff.
~ Electrical conduit and other utility issues. ~ On-site temporary detour bridge. ~ Permit mistakenly stated that detour bridge would span the river so temporary bents were not allowed to be placed in the river. Post-let, a need for maintaining pedestrian traffic was identified. ~ New bridge will have a closed drainage system. ~ Used standard overhang falsework plans. ~ Drop inlet in the approach slab. ~ "Floating" grade point.