Site access to Argonne National Laboratory is allowed only with an ID badge or a visitor pass. A visitor pass can be arranged by calling the CARS administrative office at the APS, 630-252-0450, the CARS main office, 773-702-9951, or by email to Kathryn Tietz at email@example.com.
The gate pass may be picked up at the Argonne Information Center located just outside the Main Gate Guard House off Cass Avenue. The Center is open M-F, 6:30a.m. -5:00p.m. CST. A pass may be left at the Guard House for pick up during times when the AIC is not open.
A site access visitor pass alone does not permit a user unescorted access to the APS facility; either a temporary or permanent user badge is needed for unescorted APS access.Gate Hours
- Main Gate (on Northgate Rd. off Cass Ave.).
24 hours a day, 7 days a week
- West Gate (on Westgate Rd. off Lemont Rd.).
6:15 a.m.-7:10 p.m. M-F
- East Gate (on Eastwood Dr. off Cass Ave.)
6:25 a.m.-9:15 a.m. M-F
3:30 p.m.-6:00 p.m. M-F