Contractors plan to shift Interstate 69 traffic lanes this evening to begin the next phase of construction at the Pleasant Run Creek bridges immediately south of State Road 332. Starting at 9 tonight alternating lanes of I-69 will be closed as crews modify pavement markings and divert one left lane of I-69 South across the median to share the northbound side of the interstate. Weather permitting, all lanes will be open and shifted into this work zone traffic pattern before 6 a.m. on Saturday.