Larson Design Group (LDG) provided preliminary engineering, final design, and construction phase services for the SR 581/Creekview Road interchange upgrades in Hampden Township, Cumberland County, Pennsylvania. The project included adding traffic signals to the interchange; expanding the on and off ramps to accommodate existing traffic volume; full-depth bituminous and concrete reconstruction; and the mill and overlay of the project area. Design activities included constructability review; highway lighting plans; traffic control, pavement marking, and signal timing plans; permitting; and roadway and drainage design.