Early administration of antibiotics in the presence of open fractures is critical in reducing infections and later complications. Current guidelines recommend administering antibiotics within 60min of patient arrival to the emergency department, yet trauma centers often struggle to meet this metric. This study aims to evaluate the impact of a nurse-initiated evidence-based treatment protocol on the timeliness of antibiotic administration in pediatric patients with open fractures. A retrospective pre-post study of patients who met the National Trauma Data Standard registry inclusion criteria for open fractures of long bones, amputations, or lawn mower injuries was performed at a Midwestern United States Level II pediatric trauma center. The time of patient arrival and time of antibiotic administration from preimplementation (2015-2020) to postimplementation (2021-2022) of the protocol were compared. Patients transferred in who received antibiotics at an outside facility were excluded. A total of N =73 participants met the study inclusion criteria, of which n =41 were in the preimplementation group and n =32 were in the postimplementation group. Patients receiving antibiotics within 60min of arrival increased from n =24/41 (58.5%) preimplementation to n =26/32 (84.4%) postimplementation (p<.05). Our study demonstrates that initiating evidence-based treatment orders from triage helped decrease the time from arrival to time of antibiotic administration in patients with open fractures. We sustained improvement for 24months after the implementation of our intervention.