Spring Field Review Details

Structures Bridge Sites

Title	County	Location

Spring Field Review Site 10 2008	McDowell	Bridge #198 on SR 1782 over the Second Broad River
~ Project would have been a good candidate for the sub-regional tier design guidelines. ~ At least one of the three spans on this bridge might have been eliminated. ~ Drilled shafts appear overdesigned, possibly due to the minimum column size suggested in the Structure Design Manual. A/I ~ Structure Design will investigate reducing the minimum diameters for columns and drilled shafts.
~ 3-span (25'-60'-25') 36" prestressed concrete girder bridge. ~ Location features rock near the natural ground elevation. ~ Foundation consists of drilled shafts with bent caps at the natural ground elevation. ~ A single span bridge should have been considered.